"Eastern Han" and "House of Liu" redirect here.
For the Five Dynasties-era kingdom, see Northern Han.
For other uses, see House of Liu (disambiguation).
|Common languages||Old Chinese|
|202–195 BC (first)||Emperor Gaozu|
|141–87 BC||Emperor Wu|
|25–57 AD||Emperor Guangwu|
|189–220 AD (last)||Emperor Xian|
|206–193 BC||Xiao He|
|193–190 BC||Cao Can|
|189–192 AD||Dong Zhuo|
|208–220 AD||Cao Cao|
|220 AD||Cao Pi|
|Xiang Yu appointed Liu Bang as King of Han||206 BC|
|Battle of Gaixia; Han rule of China began||202 BC|
|Xin dynasty||9 AD–23 AD|
|Abdication to Cao Wei||220 AD|
|50 BC est. (Western Han peak)||6,000,000 km (2,300,000 sq mi)|
|100 AD est. (Eastern Han peak)||6,500,000 km (2,500,000 sq mi)|
|Currency||Ban Liang coins and Wu Zhu coins|
|Preceded by||Succeeded by|
|TranscriptionsStandard MandarinHanyu PinyinHànBopomofoㄏㄢˋGwoyeu RomatzyhHannWade–GilesHanTongyong PinyinHànYale RomanizationHànIPA[xânYue: CantoneseYale RomanizationHonJyutpingHon3IPA[hɔ̄ːnSouthern MinHokkien POJHànTâi-lôHànMiddle ChineseMiddle ChinesexànOld ChineseBaxter (1992)*xansBaxter–Sagart (2014)*n̥ˤar-s|
Preceded by the short-lived Qin dynasty (221–206 BC) and a warring interregnum known as the Chu–Han contention (206–202 BC), it was briefly interrupted by the Xin dynasty (9–23 AD) established by the usurping regent Wang Mang, and was separated into two periods—the Western Han (202 BC–9 AD) and the Eastern Han (25–220 AD), before being succeeded by the Three Kingdoms period (220–280 AD).
These kingdoms gradually lost all vestiges of their independence, particularly following the Rebellion of the Seven States.
From the reign of Emperor Wu (r. 141–87 BC) onward, the Chinese court officially sponsored Confucianism in education and court politics, synthesized with the cosmology of later scholars such as Dong Zhongshu.
This policy endured until the fall of the Qing dynasty in 1912 AD.
The period saw a number of limited institutional innovations.
To finance its military campaigns and the settlement of newly conquered frontier territories, the Han government nationalized the private salt and iron industries in 117 BC, but these government monopolies were repealed during the Eastern Han dynasty.
Science and technology during the Han period saw significant advances, including the process of papermaking, the nautical steering ship rudder, the use of negative numbers in mathematics, the raised-relief map, the hydraulic-powered armillary sphere for astronomy, and a seismometer employing an inverted pendulum that could be used to discern the cardinal direction of distant earthquakes.
The Xiongnu, a nomadic steppe confederation, defeated the Han in 200 BC and forced the Han to submit as a de facto inferior and vassal partner for several decades, but continued their military raids on the Han borders.
Emperor Wu launched several military campaigns against them.
The ultimate Han victory in these wars eventually forced the Xiongnu to accept vassal status as Han tributaries.
These campaigns expanded Han sovereignty and control into the Tarim Basin of Central Asia, divided the Xiongnu into two separate confederations, and helped establish the vast trade network known as the Silk Road, which reached as far as the Mediterranean world.
The territories north of Han's borders were quickly overrun by the nomadic Xianbei confederation.
Emperor Wu also launched successful military expeditions in the south, annexing Nanyue in 111 BC and Dian in 109 BC, and in the Korean Peninsula where the Xuantu and Lelang Commanderies were established in 108 BC.
After 92 AD, the palace eunuchs increasingly involved themselves in court politics, engaging in violent power struggles between the various consort clans of the empresses and empresses dowager, causing the Han's ultimate downfall.
Following the death of Emperor Ling (r. 168–189 AD), the palace eunuchs suffered wholesale massacre by military officers, allowing members of the aristocracy and military governors to become warlords and divide the empire.
According to the Records of the Grand Historian, after the collapse of the Qin dynasty the hegemon Xiang Yu appointed Liu Bang as prince of the small fief of Hanzhong, named after its location on the Han River (in modern southwest Shaanxi).
Following Liu Bang's victory in the Chu–Han Contention, the resulting Han dynasty was named after the Hanzhong fief.
Main article: History of the Han dynasty
Further information: Timeline of the Han dynasty
Within four years, the dynasty's authority had collapsed in the face of rebellion.
Two former rebel leaders, Xiang Yu (d. 202 BC) of Chu and Liu Bang (d. 195 BC) of Han, engaged in a war to decide who would become of China, which had fissured into 18 kingdoms, each claiming allegiance to either Xiang Yu or Liu Bang.
Chang'an (known today as Xi'an) was chosen as the new capital of the reunified empire under Han.
At the beginning of the Western Han (traditional Chinese: ; simplified Chinese: ; pinyin: Xīhàn), also known as the Former Han (traditional Chinese: ; simplified Chinese: ; pinyin: Qiánhàn) dynasty, thirteen centrally controlled commanderies—including the capital region—existed in the western third of the empire, while the eastern two-thirds were divided into ten semi-autonomous kingdoms.
To placate his prominent commanders from the war with Chu, Emperor Gaozu enfeoffed some of them as kings.
After several insurrections by Han kings—the largest being the Rebellion of the Seven States in 154 BC—the imperial court enacted a series of reforms beginning in 145 BC limiting the size and power of these kingdoms and dividing their former territories into new centrally controlled commanderies.
Kings were no longer able to appoint their own staff; this duty was assumed by the imperial court.
Kings became nominal heads of their fiefs and collected a portion of tax revenues as their personal incomes.
The kingdoms were never entirely abolished and existed throughout the remainder of Western and Eastern Han.
Emperor Gaozu was troubled about the abundant Han-manufactured iron weapons traded to the Xiongnu along the northern borders, and he established a trade embargo against the group.
After negotiations, the heqin agreement in 198 BC nominally held the leaders of the Xiongnu and the Han as equal partners in a royal marriage alliance, but the Han were forced to send large amounts of tribute items such as silk clothes, food, and wine to the Xiongnu.
Despite the tribute and a negotiation between Laoshang Chanyu (r. 174–160 BC) and Emperor Wen (r. 180–157 BC) to reopen border markets, many of the Chanyu's Xiongnu subordinates chose not to obey the treaty and periodically raided Han territories south of the Great Wall for additional goods.
Emperor Wu accepted this, despite continuing Xiongnu raids.
However, a court conference the following year convinced the majority that a limited engagement at Mayi involving the assassination of the Chanyu would throw the Xiongnu realm into chaos and benefit the Han.
When this plot failed in 133 BC, Emperor Wu launched a series of massive military invasions into Xiongnu territory.
After Wu's reign, Han forces continued to prevail against the Xiongnu.
The Xiongnu leader Huhanye Chanyu (r. 58–31 BC) finally submitted to Han as a tributary vassal in 51 BC.
They repelled a joint Xiongnu-Qiang invasion of this northwestern territory in 111 BC.
The majority of people on the frontier were soldiers.
On occasion, the court forcibly moved peasant farmers to new frontier settlements, along with government-owned slaves and convicts who performed hard labor.
The court also encouraged commoners, such as farmers, merchants, landowners, and hired laborers, to voluntarily migrate to the frontier.
Even before Han's expansion into Central Asia, diplomat Zhang Qian's travels from 139 to 125 BC had established Chinese contacts with many surrounding civilizations.
Zhang encountered Dayuan (Fergana), Kangju (Sogdiana), and Daxia (Bactria, formerly the Greco-Bactrian Kingdom); he also gathered information on Shendu (Indus River valley of North India) and Anxi (the Parthian Empire).
All of these countries eventually received Han embassies.
From roughly 115 to 60 BC, Han forces fought the Xiongnu over control of the oasis city-states in the Tarim Basin.
Han was eventually victorious and established the Protectorate of the Western Regions in 60 BC, which dealt with the region's defense and foreign affairs.
The Han also expanded southward.
Yunnan was brought into the Han realm with the conquest of the Dian Kingdom in 109 BC, followed by parts of the Korean Peninsula with the Han conquest of Gojoseon and colonial establishments of Xuantu Commandery and Lelang Commandery in 108 BC.
In China's first known nationwide census taken in 2 AD, the population was registered as having 57,671,400 individuals in 12,366,470 households.
To pay for his military campaigns and colonial expansion, Emperor Wu nationalized several private industries.
The liquor monopoly lasted only from 98 to 81 BC, and the salt and iron monopolies were eventually abolished in early Eastern Han.
The issuing of coinage remained a central government monopoly throughout the rest of the Han dynasty.
The government monopolies were eventually repealed when a political faction known as the Reformists gained greater influence in the court.
The Modernists argued for an aggressive and expansionary foreign policy supported by revenues from heavy government intervention in the private economy.
The Reformists, however, overturned these policies, favoring a cautious, non-expansionary approach to foreign policy, frugal budget reform, and lower tax-rates imposed on private entrepreneurs.
Wang Mang's reign and civil war
Wang Zhengjun (71 BC–13 AD) was first empress, then empress dowager, and finally grand empress dowager during the reigns of the Emperors Yuan (r. 49–33 BC), Cheng (r. 33–7 BC), and Ai (r. 7–1 BC), respectively.
During this time, a succession of her male relatives held the title of regent.
When Ping died on 3 February 6 AD, Ruzi Ying (d. 25 AD) was chosen as the heir and Wang Mang was appointed to serve as acting emperor for the child.
Wang promised to relinquish his control to Liu Ying once he came of age.
Despite this promise, and against protest and revolts from the nobility, Wang Mang claimed on 10 January that the divine Mandate of Heaven called for the end of the Han dynasty and the beginning of his own: the Xin dynasty (9–23 AD).
Wang Mang initiated a series of major reforms that were ultimately unsuccessful.
Although these reforms provoked considerable opposition, Wang's regime met its ultimate downfall with the massive floods of c. 3 AD and 11 AD.
The Yellow River split into two new branches: one emptying to the north and the other to the south of the Shandong Peninsula, though Han engineers managed to dam the southern branch by 70 AD.
The flood dislodged thousands of peasant farmers, many of whom joined roving bandit and rebel groups such as the Red Eyebrows to survive.
Wang Mang's armies were incapable of quelling these enlarged rebel groups.
Eventually, an insurgent mob forced their way into the Weiyang Palace and killed Wang Mang.
However, he was overwhelmed by the Red Eyebrow rebels who deposed, assassinated, and replaced him with the puppet monarch Liu Penzi.
Under Guangwu's rule the Han Empire was restored.
From 26 until 36 AD, Emperor Guangwu had to wage war against other regional warlords who claimed the title of emperor; when these warlords were defeated, China reunified under the Han.
The period between the foundation of the Han dynasty and Wang Mang's reign is known as the Western Han (traditional Chinese: ; simplified Chinese: ; pinyin: Xīhàn) or Former Han (traditional Chinese: ; simplified Chinese: ; pinyin: Qiánhàn) (206 BC–9 AD).
From the reign of Guangwu the capital was moved eastward to Luoyang.
The era from his reign until the fall of Han is known as the Eastern Han or Later Han (25–220 AD).
The Eastern Han (traditional Chinese: ; simplified Chinese: ; pinyin: Dōnghàn), also known as the Later Han (traditional Chinese: ; simplified Chinese: ; pinyin: Hòuhàn), formally began on 5 August AD 25, when Liu Xiu became Emperor Guangwu of Han.
Their rebellion was crushed by Han general Ma Yuan (d. AD 49) in a campaign from AD 42–43.
Wang Mang renewed hostilities against the Xiongnu, who were estranged from Han until their leader Bi (比), a rival claimant to the throne against his cousin Punu (蒲奴), submitted to Han as a tributary vassal in AD 50.
This created two rival Xiongnu states: the Southern Xiongnu led by Bi, an ally of Han, and the Northern Xiongnu led by Punu, an enemy of Han.
During the turbulent reign of Wang Mang, China lost control over the Tarim Basin, which was conquered by the Northern Xiongnu in AD 63 and used as a base to invade the Hexi Corridor in Gansu.
The Xianbei reached their apogee under Tanshihuai (檀石槐) (d. AD 180), who consistently defeated Chinese armies.
However, Tanshihuai's confederation disintegrated after his death.
When a request by Kushan ruler Vima Kadphises (r. c. 90–c.
100 AD) for a marriage alliance with the Han was rejected in AD 90, he sent his forces to Wakhan (Afghanistan) to attack Ban Chao.
The conflict ended with the Kushans withdrawing because of lack of supplies.
In AD 91, the office of Protector General of the Western Regions was reinstated when it was bestowed on Ban Chao.
In addition to tributary relations with the Kushans, the Han Empire received gifts from the Parthian Empire, from a king in modern Burma, from a ruler in Japan, and initiated an unsuccessful mission to Daqin (Rome) in AD 97 with Gan Ying as emissary.
A Roman embassy of Emperor Marcus Aurelius (r. 161–180 AD) is recorded in the Weilüe and Hou Hanshu to have reached the court of Emperor Huan of Han (r. AD 146–168) in AD 166, yet Rafe de Crespigny asserts that this was most likely a group of Roman merchants.
Óc Eo is also thought to be the port city "Cattigara" described by Ptolemy in his Geography (c. 150 AD) as lying east of the Golden Chersonese (Malay Peninsula) along the Magnus Sinus (i.e. Gulf of Thailand and South China Sea), where a Greek sailor had visited.
Emperor Zhang's (r. 75–88 AD) reign came to be viewed by later Eastern Han scholars as the high point of the dynastic house.
This was in revenge for Dou's purging of the clan of his natural mother—Consort Liang—and then concealing her identity from him.
After Emperor He's death, his wife Empress Deng Sui (d. 121 AD) managed state affairs as the regent empress dowager during a turbulent financial crisis and widespread Qiang rebellion that lasted from 107 to 118 AD.
When Empress Dowager Deng died, Emperor An (r. 106–125 AD) was convinced by the accusations of the eunuchs Li Run (李閏) and Jiang Jing (江京) that Deng and her family had planned to depose him.
An dismissed Deng's clan members from office, exiled them and forced many to commit suicide.
Yan was placed under house arrest, her relatives were either killed or exiled, and her eunuch allies were slaughtered.
The regent Liang Ji (d. 159 AD), brother of Empress Liang Na (d. 150 AD), had the brother-in-law of Consort Deng Mengnü (later empress) (d. 165 AD) killed after Deng Mengnü resisted Liang Ji's attempts to control her.
Afterward, Emperor Huan employed eunuchs to depose Liang Ji, who was then forced to commit suicide.
Palace eunuchs imprisoned the official Li Ying (李膺) and his associates from the Imperial University on a dubious charge of treason.
In 167 AD, the Grand Commandant Dou Wu (d. 168 AD) convinced his son-in-law, Emperor Huan, to release them.
However the emperor permanently barred Li Ying and his associates from serving in office, marking the beginning of the Partisan Prohibitions.
When the plot was uncovered, the eunuchs arrested Empress Dowager Dou (d. 172 AD) and Chen Fan.
General Zhang Huan (張奐) favored the eunuchs.
He and his troops confronted Dou Wu and his retainers at the palace gate where each side shouted accusations of treason against the other.
When the retainers gradually deserted Dou Wu, he was forced to commit suicide.
Under Emperor Ling (r. 168–189 AD) the eunuchs had the partisan prohibitions renewed and expanded, while also auctioning off top government offices.
Many affairs of state were entrusted to the eunuchs Zhao Zhong (d. 189 AD) and Zhang Rang (d. 189 AD) while Emperor Ling spent much of his time roleplaying with concubines and participating in military parades.
End of the Han dynasty
Main article: End of the Han dynasty
The Partisan Prohibitions were repealed during the Yellow Turban Rebellion and Five Pecks of Rice Rebellion in 184 AD, largely because the court did not want to continue to alienate a significant portion of the gentry class who might otherwise join the rebellions.
The Yellow Turbans and Five-Pecks-of-Rice adherents belonged to two different hierarchical Daoist religious societies led by faith healers Zhang Jue (d. 184 AD) and Zhang Lu (d. 216 AD), respectively.
Zhang Jue's massive rebellion across eight provinces was annihilated by Han forces within a year, however the following decades saw much smaller recurrent uprisings.
Although the Yellow Turbans were defeated, many generals appointed during the crisis never disbanded their assembled militia forces and used these troops to amass power outside of the collapsing imperial authority.
General-in-Chief He Jin (d. 189 AD), half-brother to Empress He (d. 189 AD), plotted with Yuan Shao (d. 202 AD) to overthrow the eunuchs by having several generals march to the outskirts of the capital.
There, in a written petition to Empress He, they demanded the eunuchs' execution.
After a period of hesitation, Empress He consented.
When the eunuchs discovered this, however, they had her brother He Miao (何苗) rescind the order.
The eunuchs assassinated He Jin on September 22, 189 AD.
Yuan Shao then besieged Luoyang's Northern Palace while his brother Yuan Shu (d. 199 AD) besieged the Southern Palace.
On September 25 both palaces were breached and approximately two thousand eunuchs were killed.
While being pursued by the Yuan brothers, Zhang committed suicide by jumping into the Yellow River.
General Dong Zhuo (d. 192 AD) found the young emperor and his brother wandering in the countryside.
He escorted them safely back to the capital and was made Minister of Works, taking control of Luoyang and forcing Yuan Shao to flee.
After Dong Zhuo demoted Emperor Shao and promoted his brother Liu Xie as Emperor Xian, Yuan Shao led a coalition of former officials and officers against Dong, who burned Luoyang to the ground and resettled the court at Chang'an in May 191 AD.
Dong Zhuo later poisoned Emperor Shao.
Emperor Xian fled from Chang'an in 195 AD to the ruins of Luoyang.
Yuan Shao challenged Cao Cao for control over the emperor.
Yuan's power was greatly diminished after Cao defeated him at the Battle of Guandu in 200 AD.
After Yuan died, Cao killed Yuan Shao's son Yuan Tan (173–205 AD), who had fought with his brothers over the family inheritance.
After Cao's defeat at the naval Battle of Red Cliffs in 208 AD, China was divided into three spheres of influence, with Cao Cao dominating the north, Sun Quan (182–252 AD) dominating the south, and Liu Bei (161–223 AD) dominating the west.
Cao Cao died in March 220 AD.
Culture and society
Main article: Society and culture of the Han dynasty
In the hierarchical social order, the emperor was at the apex of Han society and government.
Each successive rank gave its holder greater pensions and legal privileges.
Holders of the rank immediately below, that of ordinary marquess, received a pension, but had no territorial rule.
Officials who served in government belonged to the wider commoner social class and were ranked just below nobles in social prestige.
The highest government officials could be enfeoffed as marquesses.
By the Eastern Han period, local elites of unattached scholars, teachers, students, and government officials began to identify themselves as members of a larger, nationwide gentry class with shared values and a commitment to mainstream scholarship.
When the government became noticeably corrupt in mid-to-late Eastern Han, many gentrymen even considered the cultivation of morally grounded personal relationships more important than serving in public office.
The farmer, or specifically the small landowner-cultivator, was ranked just below scholars and officials in the social hierarchy.
The Han dynasty made adjustments to slavery in China and saw an increase in agricultural slaves.
State-registered merchants, who were forced by law to wear white-colored clothes and pay high commercial taxes, were considered by the gentry as social parasites with a contemptible status.
These were often petty shopkeepers of urban marketplaces; merchants such as industrialists and itinerant traders working between a network of cities could avoid registering as merchants and were often wealthier and more powerful than the vast majority of government officials.
Wealthy landowners, such as nobles and officials, often provided lodging for retainers who provided valuable work or duties, sometimes including fighting bandits or riding into battle.
Unlike slaves, retainers could come and go from their master's home as they pleased.
Marriage, gender, and kinship
See also: Women in Han China
Multiple generations of extended family members did not occupy the same house, unlike families of later dynasties.
According to Confucian family norms, various family members were treated with different levels of respect and intimacy.
For example, there were different accepted time frames for mourning the death of a father versus a paternal uncle.
Marriages were highly ritualized, particularly for the wealthy, and included many important steps.
A lack of either was considered dishonorable and the woman would have been seen not as a wife, but as a concubine.
Arranged marriages were normal, with the father's input on his offspring's spouse being considered more important than the mother's.
Monogamous marriages were also normal, although nobles and high officials were wealthy enough to afford and support concubines as additional lovers.
Under certain conditions dictated by custom, not law, both men and women were able to divorce their spouses and remarry.
However, a woman who had been widowed continued to belong to her husband's family after his death.
In order to remarry, the widow would have to be returned to her family in exchange for a ransom fee.
Her children would not be allowed to go with her.
Unlike the practice in later dynasties, the father usually sent his adult married sons away with their portions of the family fortune.
Daughters received a portion of the family fortune through their marriage dowries, though this was usually much less than the shares of sons.
A different distribution of the remainder could be specified in a will, but it is unclear how common this was.
Women were expected to obey the will of their father, then their husband, and then their adult son in old age.
However, it is known from contemporary sources that there were many deviations to this rule, especially in regard to mothers over their sons, and empresses who ordered around and openly humiliated their fathers and brothers.
Women were exempt from the annual corvée labor duties, but often engaged in a range of income-earning occupations aside from their domestic chores of cooking and cleaning.
The most common occupation for women was weaving clothes for the family, sale at market or for large textile enterprises that employed hundreds of women.
Other women helped on their brothers' farms or became singers, dancers, sorceresses, respected medical physicians, and successful merchants who could afford their own silk clothes.
Some women formed spinning collectives, aggregating the resources of several different families.
Education, literature, and philosophy
However, the Han court under Emperor Wu gave Confucianism exclusive patronage.
He abolished all academic chairs or erudites (bóshì 博士) not dealing with the Confucian Five Classics in 136 BC and encouraged nominees for office to receive a Confucian-based education at the Imperial University that he established in 124 BC.
Much to the interest of the ruler, Dong's synthesis justified the imperial system of government within the natural order of the universe.
The Imperial University grew in importance as the student body grew to over 30,000 by the 2nd century AD.
Some important texts were created and studied by scholars.
Philosophical works written by Yang Xiong (53 BC–18 AD), Huan Tan (43 BC–28 AD), Wang Chong (27–100 AD), and Wang Fu (78–163 AD) questioned whether human nature was innately good or evil and posed challenges to Dong's universal order.
The Records of the Grand Historian by Sima Tan (d. 110 BC) and his son Sima Qian (145–86 BC) established the standard model for all of imperial China's Standard Histories, such as the Book of Han written by Ban Biao (3–54 AD), his son Ban Gu (32–92 AD), and his daughter Ban Zhao (45–116 AD).
147 AD) and the Fangyan by Yang Xiong.
Biographies on important figures were written by various gentrymen.
Han dynasty poetry was dominated by the fu genre, which achieved its greatest prominence during the reign of Emperor Wu.
Law and order
Women, although usually having fewer rights by custom, were allowed to level civil and criminal charges against men.
While suspects were jailed, convicted criminals were never imprisoned.
Instead, punishments were commonly monetary fines, periods of forced hard labor for convicts, and the penalty of death by beheading.
A series of reforms abolished mutilation punishments with progressively less-severe beatings by the bastinado.
Acting as a judge in lawsuits was one of many duties of the county magistrate and Administrators of commanderies.
Complex, high-profile or unresolved cases were often deferred to the Minister of Justice in the capital or even the emperor.
In each Han county was several districts, each overseen by a chief of police.
Order in the cities was maintained by government officers in the marketplaces and constables in the neighborhoods.
Domesticated animals that were also eaten included chickens, Mandarin ducks, geese, cows, sheep, pigs, camels and dogs (various types were bred specifically for food, while most were used as pets).
Turtles and fish were taken from streams and lakes.
Seasonings included sugar, honey, salt and soy sauce.
Beer and wine were regularly consumed.
Further information: Hanfu
The types of clothing worn and the materials used during the Han period depended upon social class.
Religion, cosmology, and metaphysics
They believed that these items could be utilized by those in the spiritual realm.
It was thought that each person had a two-part soul: the spirit-soul (hun 魂) which journeyed to the afterlife paradise of immortals (xian), and the body-soul (po 魄) which remained in its grave or tomb on earth and was only reunited with the spirit-soul through a ritual ceremony.
In addition to his many other roles, the emperor acted as the highest priest in the land who made sacrifices to Heaven, the main deities known as the Five Powers, and the spirits (shen 神) of mountains and rivers.
If the emperor did not behave according to proper ritual, ethics, and morals, he could disrupt the fine balance of these cosmological cycles and cause calamities such as earthquakes, floods, droughts, epidemics, and swarms of locusts.
By the 2nd century AD, Daoists formed large hierarchical religious societies such as the Way of the Five Pecks of Rice.
Its followers believed that the sage-philosopher Laozi (fl. 6th century BC) was a holy prophet who would offer salvation and good health if his devout followers would confess their sins, ban the worship of unclean gods who accepted meat sacrifices and chant sections of the Daodejing.
Buddhism first entered China during the Eastern Han and was first mentioned in 65 AD.
Liu Ying (d. 71 AD), a half-brother to Emperor Ming of Han (r. 57–75 AD), was one of its earliest Chinese adherents, although Chinese Buddhism at this point was heavily associated with Huang-Lao Daoism.
Government and politics
Main article: Government of the Han dynasty
See also: List of emperors of the Han dynasty
In Han government, the emperor was the supreme judge and lawgiver, the commander-in-chief of the armed forces and sole designator of official nominees appointed to the top posts in central and local administrations; those who earned a 600-bushel salary-rank or higher.
Theoretically, there were no limits to his power.
However, state organs with competing interests and institutions such as the court conference (tingyi 廷議)—where ministers were convened to reach majority consensus on an issue—pressured the emperor to accept the advice of his ministers on policy decisions.
If the emperor rejected a court conference decision, he risked alienating his high ministers.
Nevertheless, emperors sometimes did reject the majority opinion reached at court conferences.
These were the Chancellor or Minister over the Masses (Chengxiang 丞相 or Da situ 大司徒), the Imperial Counselor or Excellency of Works (Yushi dafu 御史大夫 or Da sikong 大司空), and Grand Commandant or Grand Marshal (Taiwei 太尉 or Da sima 大司馬).
The Chancellor, whose title was changed to 'Minister over the Masses' in 8 BC, was chiefly responsible for drafting the government budget.
The Chancellor's other duties included managing provincial registers for land and population, leading court conferences, acting as judge in lawsuits and recommending nominees for high office.
He could appoint officials below the salary-rank of 600 bushels.
The Imperial Counselor's chief duty was to conduct disciplinary procedures for officials.
He shared similar duties with the Chancellor, such as receiving annual provincial reports.
However, when his title was changed to Minister of Works in 8 BC, his chief duty became oversight of public works projects.
The Grand Commandant, whose title was changed to Grand Marshal in 119 BC before reverting to Grand Commandant in 51 AD, was the irregularly posted commander of the military and then regent during the Western Han period.
In the Eastern Han era he was chiefly a civil official who shared many of the same censorial powers as the other two Councillors of State.
Ranked below the Three Councillors of State were the Nine Ministers (Jiu qing 九卿), who each headed a specialized ministry.
The Minister of Ceremonies (Taichang 太常) was the chief official in charge of religious rites, rituals, prayers and the maintenance of ancestral temples and altars.
The Minister of the Household (Guang lu xun 光祿勳) was in charge of the emperor's security within the palace grounds, external imperial parks and wherever the emperor made an outing by chariot.
The Minister of the Guards (Weiwei 衛尉) was responsible for securing and patrolling the walls, towers, and gates of the imperial palaces.
The Minister Coachman (Taipu 太僕) was responsible for the maintenance of imperial stables, horses, carriages and coach-houses for the emperor and his palace attendants, as well as the supply of horses for the armed forces.
The Minister of Justice (Tingwei 廷尉) was the chief official in charge of upholding, administering, and interpreting the law.
The Minister Herald (Da honglu 大鴻臚) was the chief official in charge of receiving honored guests at the imperial court, such as nobles and foreign ambassadors.
The Minister of the Imperial Clan (Zongzheng 宗正) oversaw the imperial court's interactions with the empire's nobility and extended imperial family, such as granting fiefs and titles.
The Minister Steward (Shaofu 少府) served the emperor exclusively, providing him with entertainment and amusements, proper food and clothing, medicine and physical care, valuables and equipment.
A county was divided into several districts (xiang 鄉), the latter composed of a group of hamlets (li 里), each containing about a hundred families.
The heads of provinces, whose official title was changed from Inspector to Governor and vice versa several times during Han, were responsible for inspecting several commandery-level and kingdom-level administrations.
On the basis of their reports, the officials in these local administrations would be promoted, demoted, dismissed or prosecuted by the imperial court.
A governor could take various actions without permission from the imperial court.
The lower-ranked inspector had executive powers only during times of crisis, such as raising militias across the commanderies under his jurisdiction to suppress a rebellion.
A commandery consisted of a group of counties, and was headed by an Administrator.
He was the top civil and military leader of the commandery and handled defense, lawsuits, seasonal instructions to farmers and recommendations of nominees for office sent annually to the capital in a quota system first established by Emperor Wu.
The head of a large county of about 10,000 households was called a Prefect, while the heads of smaller counties were called Chiefs, and both could be referred to as Magistrates.
A Magistrate maintained law and order in his county, registered the populace for taxation, mobilized commoners for annual corvée duties, repaired schools and supervised public works.
Kingdoms and marquessates
Main article: Kings of the Han dynasty
Before 157 BC some kingdoms were ruled by non-relatives, granted to them in return for their services to Emperor Gaozu.
The administration of each kingdom was very similar to that of the central government.
Although the emperor appointed the Chancellor of each kingdom, kings appointed all the remaining civil officials in their fiefs.
However, in 145 BC, after several insurrections by the kings, Emperor Jing removed the kings' rights to appoint officials whose salaries were higher than 400 bushels.
The Imperial Counselors and Nine Ministers (excluding the Minister Coachman) of every kingdom were abolished, although the Chancellor was still appointed by the central government.
With these reforms, kings were reduced to being nominal heads of their fiefs, gaining a personal income from only a portion of the taxes collected in their kingdom.
Similarly, the officials in the administrative staff of a full marquess's fief were appointed by the central government.
A marquess's Chancellor was ranked as the equivalent of a county Prefect.
Like a king, the marquess collected a portion of the tax revenues in his fief as personal income.
Up until the reign of Emperor Jing of Han, the Emperors of the Han had great difficulty bringing the vassal kings under control, as kings often switched their allegiance to the Xiongnu Chanyu whenever threatened by Imperial attempts to centralize power.
Within the seven years of Han Gaozu's reign, three vassal kings and one marquess either defected to or allied with the Xiongnu.
Even imperial princes in control of fiefdoms would sometimes invite the Xiongnu to invade in response to threats by the Emperor to remove their power.
The Han emperors moved to secure a treaty with the Chanyu to demarcate authority between them, recognizing each other as the "two masters" (兩主), the sole representatives of their respective peoples, cemented with a marriage alliance (heqin), before eliminating the rebellious vassal kings in 154 BC.
This prompted some vassal kings of the Xiongnu to switch their allegiance to the Han emperor from 147 BC.
Han court officials were initially hostile to the idea of disrupting the status quo and expanding into the Xiongnu steppe territory.
The surrendered Xiongnu were integrated into a parallel military and political structure under the Han Emperor, and opened the avenue for the Han dynasty to challenge the Xiongnu cavalry on the steppe.
This also introduced the Han to the interstate networks in the Tarim Basin (Xinjiang), allowing for the expansion of the Han dynasty from a limited regional state to a universalist and cosmopolitan empire through further marriage alliances with another steppe power, the Wusun.
Main article: Army of the Han dynasty
At the beginning of the Han dynasty, every male commoner aged twenty-three was liable for conscription into the military.
The minimum age for the military draft was reduced to twenty after Emperor Zhao's (r. 87–74 BC) reign.
Conscripted soldiers underwent one year of training and one year of service as non-professional soldiers.
The year of active service was served either on the frontier, in a king's court or under the Minister of the Guards in the capital.
A small professional (paid) standing army was stationed near the capital.
During the Eastern Han, conscription could be avoided if one paid a commutable tax.
The Eastern Han court favored the recruitment of a volunteer army.
The volunteer army comprised the Southern Army (Nanjun 南軍), while the standing army stationed in and near the capital was the Northern Army (Beijun 北軍).
Led by Colonels (Xiaowei 校尉), the Northern Army consisted of five regiments, each composed of several thousand soldiers.
When central authority collapsed after 189 AD, wealthy landowners, members of the aristocracy/nobility, and regional military-governors relied upon their retainers to act as their own personal troops.
The latter were known as buqu 部曲, a special social class in Chinese history.
During times of war, the volunteer army was increased, and a much larger militia was raised across the country to supplement the Northern Army.
Regiments were divided into companies and led by Captains.
Platoons were the smallest units of soldiers.
Main article: Economy of the Han dynasty
The Han dynasty inherited the ban liang coin type from the Qin.
In the beginning of the Han, Emperor Gaozu closed the government mint in favor of private minting of coins.
This decision was reversed in 186 BC by his widow Grand Empress Dowager Lü Zhi (d. 180 BC), who abolished private minting.
In 182 BC, Lü Zhi issued a bronze coin that was much lighter in weight than previous coins.
This caused widespread inflation that was not reduced until 175 BC when Emperor Wen allowed private minters to manufacture coins that were precisely 2.6 g (0.09 oz) in weight.
In 144 BC Emperor Jing abolished private minting in favor of central-government and commandery-level minting; he also introduced a new coin.
Emperor Wu introduced another in 120 BC, but a year later he abandoned the ban liangs entirely in favor of the wuzhu (五銖) coin, weighing 3.2 g (0.11 oz).
The wuzhu became China's standard coin until the Tang dynasty (618–907 AD).
Its use was interrupted briefly by several new currencies introduced during Wang Mang's regime until it was reinstated in 40 AD by Emperor Guangwu.
Since commandery-issued coins were often of inferior quality and lighter weight, the central government closed commandery mints and monopolized the issue of coinage in 113 BC.
This Central government issuance of coinage was overseen by the Superintendent of Waterways and Parks, this duty being transferred to the Minister of Finance during Eastern Han.
Taxation and property
The annual poll tax rate for adult men and women was 120 coins and 20 coins for minors.
Merchants were required to pay a higher rate of 240 coins.
The poll tax stimulated a money economy that necessitated the minting of over 28,000,000,000 coins from 118 BC to 5 AD, an average of 220,000,000 coins a year.
The widespread circulation of coin cash allowed successful merchants to invest money in land, empowering the very social class the government attempted to suppress through heavy commercial and property taxes.
Emperor Wu even enacted laws which banned registered merchants from owning land, yet powerful merchants were able to avoid registration and own large tracts of land.
The small landowner-cultivators formed the majority of the Han tax base; this revenue was threatened during the latter half of Eastern Han when many peasants fell into debt and were forced to work as farming tenants for wealthy landlords.
The Han government enacted reforms in order to keep small landowner-cultivators out of debt and on their own farms.
These reforms included reducing taxes, temporary remissions of taxes, granting loans and providing landless peasants temporary lodging and work in agricultural colonies until they could recover from their debts.
In 168 BC, the land tax rate was reduced from one-fifteenth of a farming household's crop yield to one-thirtieth, and later to a one-hundredth of a crop yield for the last decades of the dynasty.
The consequent loss of government revenue was compensated for by increasing property taxes.
The labor tax took the form of conscripted labor for one month per year, which was imposed upon male commoners aged fifteen to fifty-six.
This could be avoided in Eastern Han with a commutable tax, since hired labor became more popular.
Private manufacture and government monopolies
In the early Western Han, a wealthy salt or iron industrialist, whether a semi-autonomous king or wealthy merchant, could boast funds that rivaled the imperial treasury and amass a peasant workforce of over a thousand.
This kept many peasants away from their farms and denied the government a significant portion of its land tax revenue.
To eliminate the influence of such private entrepreneurs, Emperor Wu nationalized the salt and iron industries in 117 BC and allowed many of the former industrialists to become officials administering the state monopolies.
By Eastern Han times, the central government monopolies were repealed in favor of production by commandery and county administrations, as well as private businessmen.
Liquor was another profitable private industry nationalized by the central government in 98 BC.
However, this was repealed in 81 BC and a property tax rate of two coins for every 0.2 L (0.05 gallons) was levied for those who traded it privately.
By 110 BC Emperor Wu also interfered with the profitable trade in grain when he eliminated speculation by selling government-stored grain at a lower price than demanded by merchants.
Apart from Emperor Ming's creation of a short-lived Office for Price Adjustment and Stabilization, which was abolished in 68 AD, central-government price control regulations were largely absent during the Eastern Han.
Science and technology
Main article: Science and technology of the Han dynasty
By the beginning of the Han dynasty, the chief writing materials were clay tablets, silk cloth, hemp paper, and rolled scrolls made from bamboo strips sewn together with hempen string; these were passed through drilled holes and secured with clay stamps.
The oldest known Chinese piece of hempen paper dates to the 2nd century BC.
The standard papermaking process was invented by Cai Lun (AD 50–121) in 105.
Metallurgy and agriculture
Evidence suggests that blast furnaces, that convert raw iron ore into pig iron, which can be remelted in a cupola furnace to produce cast iron by means of a cold blast and hot blast, were operational in China by the late Spring and Autumn period (722–481 BC).
The Han dynasty Chinese used bronze and iron to make a range of weapons, culinary tools, carpenters' tools and domestic wares.
A significant product of these improved iron-smelting techniques was the manufacture of new agricultural tools.
The heavy moldboard iron plow, also invented during the Han dynasty, required only one man to control it, two oxen to pull it.
It had three plowshares, a seed box for the drills, a tool which turned down the soil and could sow roughly 45,730 m (11.3 acres) of land in a single day.
To protect crops from wind and drought, the grain intendant Zhao Guo (趙過) created the alternating fields system (daitianfa 代田法) during Emperor Wu's reign.
This system switched the positions of furrows and ridges between growing seasons.
Once experiments with this system yielded successful results, the government officially sponsored it and encouraged peasants to use it.
Han farmers also used the pit field system (aotian 凹田) for growing crops, which involved heavily fertilized pits that did not require plows or oxen and could be placed on sloping terrain.
Structural and geotechnical engineering
Further information: Han dynasty tomb architecture
Timber was the chief building material during the Han dynasty; it was used to build palace halls, multi-story residential towers and halls and single-story houses.
Because wood decays rapidly, the only remaining evidence of Han wooden architecture is a collection of scattered ceramic roof tiles.
The oldest surviving wooden halls in China date to the Tang dynasty (AD 618–907).
Architectural historian Robert L. Thorp points out the scarcity of Han-era archaeological remains, and claims that often unreliable Han-era literary and artistic sources are used by historians for clues about lost Han architecture.
Though Han wooden structures decayed, some Han-dynasty ruins made of brick, stone, and rammed earth remain intact.
This includes stone pillar-gates, brick tomb chambers, rammed-earth city walls, rammed-earth and brick beacon towers, rammed-earth sections of the Great Wall, rammed-earth platforms where elevated halls once stood, and two rammed-earth castles in Gansu.
Monumental stone pillar-gates, twenty-nine of which survive from the Han period, formed entrances of walled enclosures at shrine and tomb sites.
These pillars feature artistic imitations of wooden and ceramic building components such as roof tiles, eaves, and balustrades.
The courtyard house is the most common type of home portrayed in Han artwork.
Ceramic architectural models of buildings, like houses and towers, were found in Han tombs, perhaps to provide lodging for the dead in the afterlife.
These provide valuable clues about lost wooden architecture.
The artistic designs found on ceramic roof tiles of tower models are in some cases exact matches to Han roof tiles found at archaeological sites.
Underground vaults and domes did not require buttress supports since they were held in place by earthen pits.
The use of brick vaults and domes in aboveground Han structures is unknown.
However, there are only two known references to arch bridges in Han literature, and only a single Han relief sculpture in Sichuan depicts an arch bridge.
Underground mine shafts, some reaching depths over 100 metres (330 ft), were created for the extraction of metal ores.
These boreholes perhaps reached a depth of 600 m (2000 ft).
Mechanical and hydraulic engineering
Han-era mechanical engineering comes largely from the choice observational writings of sometimes-disinterested Confucian scholars who generally considered scientific and engineering endeavors to be far beneath them.
Professional artisan-engineers (jiang 匠) did not leave behind detailed records of their work.
Han scholars, who often had little or no expertise in mechanical engineering, sometimes provided insufficient information on the various technologies they described.
Nevertheless, some Han literary sources provide crucial information.
The inventions of mechanical engineer and craftsman Ding Huan are mentioned in the Miscellaneous Notes on the Western Capital.
Around AD 180, Ding created a manually operated rotary fan used for air conditioning within palace buildings.
Modern archaeology has led to the discovery of Han artwork portraying inventions which were otherwise absent in Han literary sources.
The odometer cart, invented during Han, measured journey lengths, using mechanical figures banging drums and gongs to indicate each distance traveled.
This invention is depicted in Han artwork by the 2nd century, yet detailed written descriptions were not offered until the 3rd century.
Modern archaeologists have also unearthed specimens of devices used during the Han dynasty, for example a pair of sliding metal calipers used by craftsmen for making minute measurements.
These calipers contain inscriptions of the exact day and year they were manufactured.
These tools are not mentioned in any Han literary sources.
The waterwheel appeared in Chinese records during the Han.
However, there is no sufficient evidence for the watermill in China until about the 5th century.
The chain pump was first mentioned in China by the philosopher Wang Chong in his 1st-century Balanced Discourse.
Zhang also invented a device he termed an "earthquake weathervane" (houfeng didong yi 候風地動儀), which the British biochemist, sinologist, and historian Joseph Needham described as "the ancestor of all seismographs".
It employed an inverted pendulum that, when disturbed by ground tremors, would trigger a set of gears that dropped a metal ball from one of eight dragon mouths (representing all eight directions) into a metal toad's mouth.
The account of this device in the Book of the Later Han describes how, on one occasion, one of the metal balls was triggered without any of the observers feeling a disturbance.
Several days later, a messenger arrived bearing news that an earthquake had struck in Longxi Commandery (in modern Gansu Province), the direction the device had indicated, which forced the officials at court to admit the efficacy of Zhang's device.
Further information: Chinese mathematics § Han mathematics
Three Han mathematical treatises still exist.
Han-era mathematical achievements include solving problems with right-angle triangles, square roots, cube roots, and matrix methods, finding more accurate approximations for pi, providing mathematical proof of the Pythagorean theorem, use of the decimal fraction, Gaussian elimination to solve linear equations, and continued fractions to find the roots of equations.
One of the Han's greatest mathematical advancements was the world's first use of negative numbers.
Negative numbers first appeared in the Nine Chapters on the Mathematical Art as black counting rods, where positive numbers were represented by red counting rods.
Negative numbers were also used by the Greek mathematician Diophantus around AD 275, and in the 7th-century Bakhshali manuscript of Gandhara, South Asia, but were not widely accepted in Europe until the 16th century.
The Han applied mathematics to various diverse disciplines.
In musical tuning, Jing Fang (78–37 BC) realized that 53 perfect fifths was approximate to 31 octaves while creating a musical scale of 60 tones, calculating the difference at ⁄176776 (the same value of 53 equal temperament discovered by the German mathematician Nicholas Mercator [1620–1687], i.e. 3/2).
Further information: Chinese astronomy
During the spring and autumn periods of the 5th century BC, the Chinese established the Sifen calendar (古四分历), which measured the tropical year at 365⁄4 days.
This was replaced in 104 BC with the Taichu calendar (太初曆) that measured the tropical year at 365⁄1539 days and the lunar month at 29⁄81 days.
However, Emperor Zhang later reinstated the Sifen calendar.
They assumed that the Sun, Moon, and planets were spherical and not disc-shaped.
They also thought that the illumination of the Moon and planets was caused by sunlight, that lunar eclipses occurred when the Earth obstructed sunlight falling onto the Moon, and that a solar eclipse occurred when the Moon obstructed sunlight from reaching the Earth.
Cartography, ships, and vehicles
Evidence found in Chinese literature, and archaeological evidence, show that cartography existed in China before the Han.
Some of the earliest Han maps discovered were ink-penned silk maps found amongst the Mawangdui Silk Texts in a 2nd-century-BC tomb.
This date could be revised if the tomb of Emperor Qin Shi Huang is excavated and the account in the Records of the Grand Historian concerning a model map of the empire is proven to be true.
Although the use of the graduated scale and grid reference for maps was not thoroughly described until the published work of Pei Xiu (AD 224–271), there is evidence that in the early 2nd century, cartographer Zhang Heng was the first to use scales and grids for maps.
Han dynasty Chinese sailed in a variety of ships differing from those of previous eras, such as the tower ship.
The junk design was developed and realized during the Han era.
Junk ships featured a square-ended bow and stern, a flat-bottomed hull or carvel-shaped hull with no keel or sternpost, and solid transverse bulkheads in the place of structural ribs found in Western vessels.
Although ox-carts and chariots were previously used in China, the wheelbarrow was first used in Han China in the 1st century BC.
Han artwork of horse-drawn chariots shows that the Warring-States-Era heavy wooden yoke placed around a horse's chest was replaced by the softer breast strap.
Further information: Traditional Chinese medicine § Han dynasty
Han-era medical physicians believed that the human body was subject to the same forces of nature that governed the greater universe, namely the cosmological cycles of yin and yang and the five phases.
Each organ of the body was associated with a particular phase.
Illness was viewed as a sign that qi or "vital energy" channels leading to a certain organ had been disrupted.
Thus, Han-era physicians prescribed medicine that was believed to counteract this imbalance.
For example, since the wood phase was believed to promote the fire phase, medicinal ingredients associated with the wood phase could be used to heal an organ associated with the fire phase.
When surgery was performed by the Chinese physician Hua Tuo (d. AD 208), he used anesthesia to numb his patients' pain and prescribed a rubbing ointment that allegedly sped the process of healing surgical wounds.
Whereas the physician Zhang Zhongjing (c. AD 150–c.
Credits to the contents of this page go to the authors of the corresponding Wikipedia page: en.wikipedia.org/wiki/Han dynasty.