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Setting the scene
The Han Dynasty had ruled China for over 400 years since 206 BCE, establishing Confucian bureaucracy, the Silk Road, and paper. By 180 CE, court eunuchs and consort families fought for power while peasant taxes rose. The Yellow Turban Rebellion of 184 CE, led by Daoist healers promising a new era, mobilized 360,000 peasants. Though suppressed, it forced the court to empower regional warlords to raise armies, decentralizing power permanently.
What happened
After Emperor Ling died in 189, warlord Dong Zhuo seized the capital, beginning decades of civil war. The empire fractured into three kingdoms by 220: Cao Wei in the north, Shu Han in the southwest, and Eastern Wu in the southeast. The last Han emperor, Xian, abdicated on December 10, 220 CE to Cao Pi, who founded Wei. The abdication was ceremonial—the Han had held no real power for thirty years.
Why it still matters
The Han collapse ended China's first golden age and began the Three Kingdoms period, romanticized in the classic novel Romance of the Three Kingdoms. The fall demonstrated the dynastic cycle that would repeat for 2,000 years: strong central rule decays into warlordism and rebellion. Han institutions—Confucian exams, bureaucracy, and the concept of the Mandate of Heaven—survived and were revived by subsequent dynasties, making 'Han' synonymous with Chinese ethnic identity to this day.
Background
China then entered the era known as the Three Kingdoms. Even centuries later, this episode remains a reference point for how empires rise, fracture, and transform.