The Qin Dynasty: Unification and Imperial System

The Qin Dynasty (221–206 BCE) was one of the most transformative periods in Chinese history — the brief but momentous reign that unified China for the first time, established the imperial system, and created the foundations of the Chinese state that would endure for over two millennia.

Unification

Qin Shi Huang (秦始皇) — "the First Emperor of Qin" — conquered the six rival states and proclaimed himself "First Emperor" (始皇帝). He standardized weights, measures, and writing; built the Great Wall; and began construction of his massive mausoleum, now guarded by the Terracotta Army.

Legalist Reforms

Qin rule was based on Legalist (法家) philosophy: strict laws, harsh punishments, and centralized control. The Qin abolished the feudal nobility, dividing the empire into commanderies (郡) and counties (县) administered by appointed officials. This centralized system became the model for all subsequent Chinese dynasties.