Every inch of our troops is iron
As a Chinese idiom, the Pinyin is ch ǐ B ī NGC ù NTI ě, which means to describe a small force. It's from August when Geng Shenqi division fought in Qianshi, our division lost.
The origin of Idioms
Dai Mingshi of the Qing Dynasty wrote: "in the past, Wang Mang took advantage of the decline of the Western Han Dynasty and moved to hanzuo without having to fight an inch of iron. Zhai Yi set out to fight for it, but died before he could."
Idiom usage
As an object; used in military affairs, etc.
Every inch of our troops is iron
one 's lips are dry and one 's mouth parched - chún gān kǒu zào
An egg strikes against a stone. —overestimate one's strength - luǎn yǔ shí dòu