保烏紗帽

Simplified: 保乌纱帽

bǎowūshāmào ㄅㄠˇ ㄨ ㄕㄚ ㄇㄠˋ

    • to hold on to one's official post

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
protect the black gauze hat
Meaning
Hold on to one's official post. The hat was worn by officials in old times. Mildly critical.

Sources