cannot find a place to stick his beak in
Wucongzhikou, a Chinese idiom, Pinyin is w ú C ó ngzh ì Hu ì, which means there is nothing to say and nothing to interrupt. It's from "three chapters of Yingchuang Yicao · pangmeisuo".
The origin of Idioms
Qing Qing Lan's "Yingchuang Yicao sanbian · pangmeisuo" said: "Lu is not in his thirties, and his prison sentence is strict, which makes people unable to comment."
Idiom usage
Used as a predicate or attributive; used in writing.
cannot find a place to stick his beak in
a snipe and a clam locked in a fight - yù bàng xiāng chí