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Secondary sourceBook3rd century BCE

The Book of Lord Shang

Shang Yang (attributed) · 3rd century BCE

The foundational Legalist text attributed to reformer Shang Yang, whose doctrines of law, agriculture and war underpinned the Qin state Qin Shi Huang ruled.

This Legalist manual by an earlier Qin reformer provided the legal doctrines that underpinned Qin Shi Huang's government.

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About this source

What it is

The Book of Lord Shang is a 3rd-century BCE Chinese text, the earliest surviving work of Chinese Legalism. It is named for and partly attributed to Shang Yang, a major reformer who served as minister to Duke Xiao of Qin. The book contains ordinances, essays and court debates focused on maintaining order through strict, impartial laws of reward and punishment, and promoting agriculture and military strength.

Why it matters

Shang Yang's reforms, a century before Qin Shi Huang's reign, laid the legal and administrative groundwork for the strong, centralized Qin state that eventually conquered all of China. The ideas in this book — strict law, agricultural productivity, and military organization — underpinned the government Qin Shi Huang ran as emperor. Scholars debate how much Shang Yang himself wrote versus later followers, but the text shows the intellectual roots of Qin's power.

Look closer

  • Why might a state built on strict law and heavy punishment become powerful quickly but face resistance later?
  • What does it mean that later scholars doubt whether Shang Yang wrote all of this book himself?
  • How might ideas written a century before Qin Shi Huang's reign still shape how he governed?

This book is part of the curated material that grounds the AI version of Emperor Qin Shi Huang on Humy.ai — when students ask about related events, the AI can quote it and cite it.

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