Crazy guess idiom wooden stakes are thick outside and thin inside.

There are details in the rough: the basic explanation: describing people's words and deeds seems rude and casual, but in fact they are cautious.

Pinyin pronunciation: czh! ng y ǒ u x √.

For example, Zhang Fei in Romance of the Three Kingdoms is a great general.

Usage: small; As predicate and attribute; Describing surface roughness is actually very detailed.

Two-part allegorical saying: put the needle in the jar; The pen container on the desk; Night arrival Yan Yan Bazhou