Duke Huan of Qi vs Qin Shi Huang

Duke Huan appointed Guan Zhong as chancellor, who implemented administrative and economic reforms. These included reorganizing the state into districts, standardizing taxes, and promoting trade, which strengthened Qi's power and wealth.

Duke Huan of Qi became the first of the Five Hegemons, dominating the Spring and Autumn period. He used the authority of the Zhou king to lead alliances of states, maintaining order and defending against non-Chinese tribes.

Duke Huan led a campaign against the Northern Di tribes who were threatening the states of Yan and Xing. His victory protected the northern borders and earned him gratitude from the Zhou court, enhancing his prestige as protector of Chinese civilization.

Duke Huan convened a major alliance of states at Kuiqiu, where he reaffirmed the authority of the Zhou king and established a code of conduct among states. This meeting solidified his position as hegemon and set precedents for interstate relations.

Qin Shi Huang commissioned a vast mausoleum complex near Xi'an, guarded by thousands of life-sized terracotta soldiers, horses, and chariots. The project employed hundreds of thousands of workers and reflected his obsession with immortality and imperial power.

From 230 to 221 BCE, Ying Zheng led the Qin state in a series of campaigns that conquered the Han, Zhao, Wei, Chu, Yan, and Qi states. This unified China under a single ruler for the first time, ending the Warring States period.

Qin Shi Huang ordered the standardization of Chinese script, currency, and weights and measures across the unified empire. This facilitated administration, trade, and cultural integration, laying a foundation for future dynasties.

After conquering the last independent state, Ying Zheng declared himself Shi Huangdi (First Emperor), founding the Qin Dynasty. He adopted a new title to signify his supreme authority and initiated centralized imperial rule.

Qin Shi Huang ordered the connection and extension of existing northern fortifications to create a unified defensive wall against nomadic Xiongnu raids. This project involved massive conscripted labor and became the precursor to the later Great Wall.

On the advice of Li Si, Qin Shi Huang ordered the burning of historical records and philosophical texts not aligned with Legalist doctrine. He also had 460 Confucian scholars buried alive to suppress dissent and consolidate ideological control.