







金城汤池 is a Chinese idiom (chengyu) meaning “an impregnable city or stronghold with formidable defenses, like a city with metal walls and a moat of boiling water; refers to a place that is extremely well-fortified and difficult to attack”. Literally, “Metal city, boiling water moat”.
Towards the end of the Qin Dynasty, Chen Sheng's rebel army challenged the Qin rule. Wu Chen, a general under Chen Sheng, led his troops to attack Fanyang in the Yue region.
Kuai Tong went to meet and persuade Xu Gong, the magistrate of Fanyang County, to surrender the city, which Xu Gong did.
Kuai Tong then met Wu Chen, advising him to properly settle Xu Gong. He reasoned that if Xu Gong was treated well, other garrisons, even those in 'golden cities and boiling-water moats' (impregnable strongholds) that were stubbornly resisting, would also surrender. Wu Chen agreed with his advice.

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Open the tool →金城汤池 (jīn chéng tāng chí) is a Chinese idiom (chengyu) meaning “an impregnable city or stronghold with formidable defenses, like a city with metal walls and a moat of boiling water; refers to a place that is extremely well-fortified and difficult to attack”.
金城汤池 is pronounced jīn chéng tāng chí in Mandarin Chinese.
Literally, 金城汤池 means “Metal city, boiling water moat”. It is used to mean “an impregnable city or stronghold with formidable defenses, like a city with metal walls and a moat of boiling water; refers to a place that is extremely well-fortified and difficult to attack”.
金城汤池 comes from a classical Chinese story dating back to ancient China. The full story is on this page.
城、池:城墙和护城河;汤:热水。金属的城墙,滚水的护城河。比喻坚固无比、防守严密的城市或工事。