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Qin & Han Dynasties Imperial Unification

Encyclopedia/3. History, Societies & Civilizations/01. East Asian Civilizations  •  Curated by Admin Timeline.sg

The Qin dynasty (221–207 BCE) ended the Warring States period to unify China under a centralized imperial system, standardizing writing, currency, and measures. The Han dynasty (206 BCE–220 CE) succeeded, expanding the empire, developing bureaucracy, and fostering cultural and technological innovations that shaped East Asian civilization.

Chronological Storyline (43 Milestones)

770 BCE

Eastern Zhou Dynasty Begins

The Zhou dynasty moves east to Luoyang, marking the start of the Spring and Autumn period. This era of feudal fragmentation precedes the Warring States period. #history #china

Eastern Zhou Dynasty Begins
Eastern Zhou Dynasty Begins
By Territories_of_Dynasties_in_China.gif: Ian Kiu - Territories_of_Dynasties_in_China.gif: Albert Herrmann (1935). History and Commercial Atlas of China. Harvard University Press. from "The Chou Dynasty, 11th-9th Centuries B.C.", CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=13309273
475 BCE

Warring States Period Begins

The Warring States period begins, characterized by intense warfare among seven major states. This era ends with Qin's unification. #history #china

Warring States Period Begins
Warring States Period Begins
By Philg88 - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=11900403
403 BCE

Partition of Jin

The state of Jin is divided into Han, Zhao, and Wei, marking a key moment in the Warring States period and altering the balance of power. #history #china

356 BCE

Shang Yang Reforms in Qin

Shang Yang initiates sweeping legalist reforms in Qin, centralizing power, promoting meritocracy, and strengthening the military. These reforms lay the foundation for Qin's eventual unification. #history #china #legalism

Shang Yang Reforms in Qin
Shang Yang Reforms in Qin
By Taken by Fanghong - Own work, CC BY 2.5, https://commons.wikimedia.org/w/index.php?curid=844037
316 BCE

Qin Conquers Shu

Qin conquers the Shu state, gaining control of the Sichuan Basin's resources and agricultural output, boosting its economic and military power. #history #china )

Qin Conquers Shu
Qin Conquers Shu
By Philg88 - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=11936378
260 BCE

Battle of Changping

Qin decisively defeats Zhao at Changping, killing hundreds of thousands of soldiers. This battle eliminates a major rival and paves the way for Qin domination. #history #china #warfare

Battle of Changping
Battle of Changping
By SY - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=60821414
256 BCE

Qin Annexes the Zhou

Qin absorbs the remaining Zhou territories, ending the Zhou dynasty's nominal rule. This symbolic act removes the last vestige of the old order. #history #china

221 BCE

Standardization Under Qin

Qin Shi Huang standardizes writing, currency, weights, measures, and axle lengths, unifying the empire and facilitating administration and trade. #history #china #standardization

Standardization Under Qin
Standardization Under Qin
By Ian Remsen - Modern natural borders from Natural Earth Albers used for the map projection, via svgis λ 0 = 110 {\displaystyle \lambda _{0}=110} φ 0 = 30 {\displaystyle \varphi _{0}=30} φ 1 = 25 {\displaystyle \varphi _{1}=25} φ 2 = 37 {\displaystyle \varphi _{2}=37} Political borders, location of the Great Wall, and adjustments to reflect ancient borders from Li, Feng (2013) Early China: A Social and Cultural History, New Approaches to Asian History, 12, Cambridge University Press, p. 246 DOI: 10.1017/CBO9781139034395. ISBN: 978-0-521-89552-1. Square represents the Qin capital at Xianyang Dotted open circles represent population centers whose precise locations are unclear, CC0, https://commons.wikimedia.org/w/index.php?curid=158113722
221 BCE

Qin Unifies China

Qin Shi Huang completes the conquest of the six warring states, establishing the first unified imperial dynasty in Chinese history. He proclaims himself the First Emperor. #history #china #empire

Qin Unifies China
Qin Unifies China
By Unknown (18??–18??) - Portal, Jane (Ed.). The first emperor: China's Terracotta Army. Cambridge, Massachusetts: Harvard University Press, 2007 ISBN 978-0-674-02697-7 Invalid ISBN (p.29), Public domain, https://commons.wikimedia.org/w/index.php?curid=164928091
220 BCE

Construction of the Great Wall Begins

Qin Shi Huang orders the connection and extension of existing walls to form the first Great Wall, defending against nomadic Xiongnu invasions. #history #china #architecture

Construction of the Great Wall Begins
Construction of the Great Wall Begins
By Severin.stalder - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=39661035
214 BCE

Lingqu Canal Completed

The Lingqu Canal, connecting the Xiang and Li rivers, is built to transport supplies for Qin's southern campaigns, demonstrating advanced hydraulic engineering. #history #china #engineering

Lingqu Canal Completed
Lingqu Canal Completed
By Farm - Own work, CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=6907371
213 BCE

Burning of Books and Burying of Scholars

Qin Shi Huang orders the destruction of historical texts and philosophical works to suppress dissenting ideas, and buries 460 Confucian scholars alive. This event symbolizes legalist repression. #history #china #legalism

Burning of Books and Burying of Scholars
Burning of Books and Burying of Scholars
By Itsmine - Self-published work by Itsmine, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=1389340
210 BCE

Death of Qin Shi Huang

Qin Shi Huang dies during an eastern tour. His tomb, guarded by the Terracotta Army, remains unexcavated. His death triggers a succession crisis and uprisings. #history #china #archaeology

209 BCE

Dazexiang Uprising

Chen Sheng and Wu Guang lead a peasant revolt against Qin rule, marking the start of widespread rebellions that eventually topple the dynasty. #history #china #revolution

Dazexiang Uprising
Dazexiang Uprising
By SY - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=63577599
207 BCE

Battle of Julu

Xiang Yu defeats the Qin army at Julu, killing the Qin general Zhang Han. This victory breaks Qin military power and leads to the collapse of the dynasty. #history #china #warfare

Battle of Julu
Battle of Julu
By Vitsuha - Own work, CC0, https://commons.wikimedia.org/w/index.php?curid=170999727
206 BCE

Fall of the Qin Dynasty

Liu Bang enters Xianyang, the Qin capital, and accepts the surrender of the last Qin ruler, Ziying. The Qin dynasty ends after 15 years. #history #china

202 BCE

Liu Bang Founds the Han Dynasty

After defeating Xiang Yu at the Battle of Gaixia, Liu Bang proclaims himself Emperor Gaozu of Han, establishing the Han dynasty with its capital at Chang'an. #history #china #empire

Liu Bang Founds the Han Dynasty
Liu Bang Founds the Han Dynasty
By DannamEmpire - Own work using: Based on: Map, p. 63, Mapping History: World History (London: Cartographica, 2007), by Dr. Ian Barnes. ISBN 978-1-84573-323-0, CC BY 4.0, https://commons.wikimedia.org/w/index.php?curid=162847450
195 BCE

Death of Emperor Gaozu

Liu Bang dies after a reign of seven years. His successors continue his policies, consolidating the Han state and reducing the power of regional kings. #history #china

Death of Emperor Gaozu
Death of Emperor Gaozu
By Unknown author - http://earlyworldhistory.blogspot.com/2012/03/liu-bang.html, Public domain, https://commons.wikimedia.org/w/index.php?curid=70464970
179 BCE

Emperor Wen Ascends the Throne

Emperor Wen of Han, known for his frugality and benevolent rule, begins his reign. He reduces taxes and promotes Confucianism, laying the foundation for the Han golden age. #history #china #governance

Emperor Wen Ascends the Throne
Emperor Wen Ascends the Throne
By AnonymousUnknown author - Descriptions of the Works. Another Look at National Treasures: Select Masterpieces of Painting and Calligraphy in the Museum Collection (exhibit). Taipei: National Palace Museum., Public domain, https://commons.wikimedia.org/w/index.php?curid=78366992
141 BCE

Emperor Wu Ascends the Throne

Emperor Wu of Han begins his 54-year reign, expanding the empire militarily and promoting Confucianism as state ideology. His reign marks the peak of Western Han power. #history #china #leadership

Emperor Wu Ascends the Throne
Emperor Wu Ascends the Throne
By Unknown author - Colored portrait and a black and white rubbing of the portrait, Public domain, https://commons.wikimedia.org/w/index.php?curid=8151462
138 BCE

Zhang Qian's First Mission to the West

Emperor Wu sends Zhang Qian on a diplomatic mission to forge alliances against the Xiongnu. Though captured, Zhang returns with knowledge of Central Asia, spurring the Silk Road. #history #china #silkroad

Zhang Qian's First Mission to the West
Zhang Qian's First Mission to the West
By PHG - copied from en wp, Public domain, https://commons.wikimedia.org/w/index.php?curid=721599
130 BCE

Han Campaigns Against the Xiongnu

Emperor Wu launches a series of large-scale military campaigns to defeat the Xiongnu confederation, securing the northern frontier and expanding Han territory. #history #china #warfare

124 BCE

Establishment of the Imperial Academy

Emperor Wu founds the Imperial Academy (Taixue) to train Confucian scholars for government service, strengthening the bureaucracy and promoting Confucian education. #history #china #education

Establishment of the Imperial Academy
Establishment of the Imperial Academy
By Internet Archive Book Images - https://www.flickr.com/photos/internetarchivebookimages/14761496004/ Source book page: https://archive.org/stream/cu31924023119880/cu31924023119880#page/n124/mode/1up, No restrictions, https://commons.wikimedia.org/w/index.php?curid=43580680
119 BCE

Battle of Mobei

Han forces under Wei Qing and Huo Qubing decisively defeat the Xiongnu in the Gobi Desert, breaking their power and securing the Hexi Corridor. #history #china #warfare

Battle of Mobei
Battle of Mobei
By Rob Oo from NL - See the world in one glance, CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=97521980
108 BCE

Han Conquest of Gojoseon

The Han dynasty conquers Gojoseon in northern Korea, establishing four commanderies, including Lelang, which control the region for centuries. #history #china #korea

Han Conquest of Gojoseon
Han Conquest of Gojoseon
By Asieon - Own work, CC0, https://commons.wikimedia.org/w/index.php?curid=191841772
104 BCE

Taichu Calendar Introduced

Emperor Wu adopts the Taichu calendar, a revised lunisolar system that improves accuracy and becomes the foundation for later Chinese calendars. #history #china #science

Taichu Calendar Introduced
Taichu Calendar Introduced
By AHxiMO RPPLOU - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=107691997
100 BCE

Sima Qian Completes Records of the Grand Historian

Sima Qian finishes the Shiji, a monumental history covering 2,500 years. It sets the standard for Chinese historiography and remains a classic. #history #china #literature

Sima Qian Completes Records of the Grand Historian
Sima Qian Completes Records of the Grand Historian
By Zhonghua Book Company - Photo taken by Chinese Wikipedia user huowax, Public domain, https://commons.wikimedia.org/w/index.php?curid=48989967
51 BCE

Conference at White Tiger Hall

Emperor Xuan convenes a scholarly conference to resolve disputes over Confucian classics, resulting in the authoritative White Tiger Hall discussions that shape Han orthodoxy. #history #china #philosophy

9 CE

Wang Mang Usurps the Throne

Wang Mang, a Han regent, seizes power and proclaims the Xin Dynasty. His radical reforms, including land redistribution and currency changes, lead to chaos and rebellion. #history #china #reform

Wang Mang Usurps the Throne
Wang Mang Usurps the Throne
By 鍾 惺, 1574-1624 - Waseda University Library, Public domain, https://commons.wikimedia.org/w/index.php?curid=178862384
25 CE

Eastern Han Dynasty Founded

Liu Xiu, a descendant of the Han royal house, defeats the Red Eyebrows and restores Han rule, establishing the Eastern Han dynasty with its capital at Luoyang. #history #china

Eastern Han Dynasty Founded
Eastern Han Dynasty Founded
By Yan Li-pen - Taken from http://hi.baidu.com/%CB%CE%BE%FC%D2%C5%C3%F1/album/%D1%D6%C1%A2%B1%BE%20%C0%FA%B4%FA%B5%DB%CD%F5%CD%BC%BE%ED. Original collection can be viewed at Museum of Fine Arts., Public domain, https://commons.wikimedia.org/w/index.php?curid=2233718
67 CE

Buddhism Officially Introduced to China

Emperor Ming of Han sends envoys to the Western Regions, who return with Buddhist scriptures and monks. The White Horse Temple is built, marking the official introduction of Buddhism. #history #china #buddhism

73 CE

Ban Chao's Mission to the Western Regions

General Ban Chao leads a diplomatic-military mission to reassert Han control over the Silk Road, pacifying the Tarim Basin and restoring trade routes. #history #china #silkroad

Ban Chao's Mission to the Western Regions
Ban Chao's Mission to the Western Regions
By Unknown artist - National Palace Museum, Public domain, https://commons.wikimedia.org/w/index.php?curid=151461164
97 CE

Gan Ying Sent to the Roman Empire

Ban Chao dispatches Gan Ying to establish contact with the Roman Empire, but he turns back at the Persian Gulf, missing the first direct Sino-Roman encounter. #history #china #rome

102 CE

Ban Chao Returns to Luoyang

After decades in the Western Regions, Ban Chao returns to the capital and dies soon after. His achievements secure Han influence in Central Asia. #history #china

105 CE

Cai Lun Perfects Papermaking

Cai Lun, a Han court eunuch, improves papermaking techniques using tree bark, hemp, and rags, creating a practical writing material. Paper spreads globally, revolutionizing communication. #history #china #invention #papermaking

Cai Lun Perfects Papermaking
Cai Lun Perfects Papermaking
By Unknown author - Tsien Tsuen-Hsuin (1985) Needham, Joseph, ed. Science and Civilisation in China: Volume 5, Chemistry and Chemical Technology, Part 1, Paper and Printing, Taipei: Caves Books, pp. 108–109 ISBN: 978-0-521-08690-5. Etnografiska museet, Stockholm: 1935.50.3366.30, Public domain, https://commons.wikimedia.org/w/index.php?curid=3154438
132 CE

Zhang Heng Invents Seismoscope

Zhang Heng, a Han astronomer and inventor, creates the first seismoscope, capable of detecting distant earthquakes. It demonstrates advanced ancient engineering and scientific observation. #history #china #science #invention

Zhang Heng Invents Seismoscope
Zhang Heng Invents Seismoscope
By Windmemories - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=176246974
166 CE

First Roman Embassy to China

A group of Romans claiming to be envoys from Emperor Marcus Aurelius arrives at the Han court, marking the first direct contact between the Roman and Chinese empires. #history #china #rome

First Roman Embassy to China
First Roman Embassy to China
By Thomas Lessman (Contact!) - Own work (For reference information, see the Map Source References section below.), CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=4019603
175 CE

Xiping Stone Classics Carved

Emperor Ling orders the carving of Confucian classics on stone tablets to preserve the standard texts. These Xiping Stone Classics are erected at the Imperial Academy. #history #china #literature

Xiping Stone Classics Carved
Xiping Stone Classics Carved
By Editor at Large - Own work, CC BY-SA 2.5, https://commons.wikimedia.org/w/index.php?curid=5839111
184 CE

Yellow Turban Rebellion

The Yellow Turban rebellion, led by Zhang Jiao, erupts against Han corruption and natural disasters. Although suppressed, it weakens the dynasty and leads to warlordism. #history #china #rebellion

Yellow Turban Rebellion
Yellow Turban Rebellion
By SY - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=62648652
189 CE

He Jin Assassinated; Dong Zhuo Seizes Power

After the death of Emperor Ling, a power struggle leads to the assassination of He Jin and the rise of the warlord Dong Zhuo, who installs a puppet emperor and sacks Luoyang. #history #china #warlord

He Jin Assassinated; Dong Zhuo Seizes Power
He Jin Assassinated; Dong Zhuo Seizes Power
By Unknown author - Zengxiang quantu SanguoyanyiTaken from http://threekingdoms.wikia.com/wiki/File:Dong_Zhuo_-_Qing_ZQ-SGYY.jpg, Public domain, https://commons.wikimedia.org/w/index.php?curid=37570496
196 CE

Cao Cao Takes Control of Emperor Xian

Cao Cao welcomes Emperor Xian to Xuchang, gaining the authority to issue imperial decrees. He legitimizes his campaigns and consolidates power over northern China. #history #china #politics

Cao Cao Takes Control of Emperor Xian
Cao Cao Takes Control of Emperor Xian
By Wang Qi - A copy of w:Sancai Tuhui, Public domain, https://commons.wikimedia.org/w/index.php?curid=10217506
208 CE

Battle of Red Cliffs

Cao Cao's southern invasion is thwarted by the allied forces of Sun Quan and Liu Bei at Red Cliffs. This battle determines the tripartite division of China. #history #china #warfare

Battle of Red Cliffs
Battle of Red Cliffs
By User Jie on en.wikipedia - Originally from en.wikipedia; description page is (was) here 08:26, 29 August 2004 Jie 416x350 (24,260 bytes) (Photo of the traditional site of Chibi, north of Wulin, taken in 2003.), CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=612393
220 CE

End of the Han Dynasty

Emperor Xian abdicates under pressure from Cao Pi, son of Cao Cao, ending the Han dynasty after 426 years. Cao Pi establishes the Wei dynasty, beginning the Three Kingdoms period. #history #china

End of the Han Dynasty
End of the Han Dynasty
By Gary Lee Todd - http://www.garyleetodd.com/chinese-museums-online/luoyang-6-horse-chariot-burial-tomb-museum/, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=4918196