Cast iron and cast copper(tiě dǎ tóng zhù)

Cast iron and cast copper

The Chinese idiom Ti ě D ǎ t ó ngzhi ù means made of iron and cast with copper. It's very strong. From Li Zicheng.

The origin of Idioms

Yao xueyin's "Li Zicheng" Volume I Chapter 24: "please rest assured, brother, it's not stupid brother who blows around after drinking, my village is really like cast iron."

Idiom usage

It is often used in writing.

Chinese PinYin : tiě dǎ tóng zhù