Basic Information
Chinese Idiom: 斩草除根
Pinyin: zhǎn cǎo chú gēn
Literal Meaning: Cut weeds and pull out their roots entirely.
Figurative Meaning: Eliminate the root of troubles or hostile forces thoroughly to avoid future dangers and hidden troubles.
Cultural Background
Derived from ancient farming wisdom and state-governing philosophy. Ancient Chinese farmers knew weeds would regrow if roots remained; the metaphor extended to politics and conflicts: hidden hazards must be completely eradicated instead of merely handled superficially. The idiom is widely used in military, governance and daily problem-solving scenarios.
Origin & English Translation
1. From Zuo Zhuan · The 6th Year of Duke Yin
Rulers governing a nation should treat evils just as farmers handle weeds: cut them down, pile up and dry the uprooted plants, destroy their roots so they cannot grow again. Only then can good governance thrive steadily.
2. Also from Zuo Zhuan
The state of Jin had a powerful noble family named Bo Zong. After Bo Zong was executed for treason, an advisor warned the ruler:
“When cutting weeds, you must remove the roots. If you leave even one sprout, the weeds will grow again. The same applies to enemies and troublemakers. If you spare their children or followers, they will take revenge someday.”
The ruler ignored this advice and allowed Bo Zong’s son to live. Years later, that son returned and brought ruin to the state. The idiom became a permanent warning: finish the job completely.
3. From Wei Shou’s Northern Qi official document Proclamation Against Liang for Hou Jing’s Rebellion:
Stop boiling water by pulling out firewood; eliminate troubles by cutting weeds root and branch.
4. From Romance of the Three Kingdoms Chapter 2 by Luo Guanzhong (Ming Dynasty):
Unless we cut the weeds and dig up the roots, this trouble will eventually cost us our lives.
Usage
Neutral-to-warning phrasing; mostly used when suggesting thorough elimination of hidden perils to prevent recurring disasters.
Key Lesson
Half measures create false security. If you only remove the visible part of a problem — a corrupt official, a bad habit, a rival’s army – but leave the hidden source intact, the problem will grow again. True resolution requires going to the very foundation and destroying it completely.
Opposite Idiom (for contrast)
- “春风吹又生” (“Spring wind blows and it grows again”): This describes problems that keep coming back because the root was never removed.
- “放虎归山” (“releasing a tiger back to the mountains”): The idiom advises decisively eliminating risks while you can — because once the enemy returns to their home ground (their “mountain”), they will be much harder, if not impossible, to defeat again.
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