be a busybody
Dog catches mouse, Chinese idiom, Pinyin is ɡǒ UD ǎ IL ǎ OSH ǔ, which means meddling. The dog's duty is to guard the door. The cat catches mice, so the dog catches mice for the cat, which is to meddle in his own business. It's from the fifth chapter of Liu Qing's cruel through iron.
The origin of Idioms
Liu Qing's "ruthless through iron" 5: "what do you do when you catch mice and meddle in that business?"
Idiom usage
Be an object or attributive
Analysis of Idioms
Dog catching mouse, dog catching mouse, dog chasing mouse
be a busybody
put one 's statecraft to full use - dà zhǎn jīng lún
work with quiet hard application - mái tóu kǔ gàn