Cut off one's hand
Duanshouxuyu, a Chinese idiom, Pinyin is Du à NSH à UX à y à, which means to cut off your hand and connect it with another piece of jade. It's from Han Feizi, employing people.
Idiom explanation
Cut off: cut off; continue: connect.
The origin of Idioms
"Han Feizi's employment" says: "if you don't look inside the private door, you should pay less attention to things, and you should be virtuous enough to force disaster. It's a way to break your hand and continue to use jade. There is a disaster of changing your body in the past."
Cut off one's hand
be of noble character and high prestige - dé gāo wàng zhòng
scattered all over like stars in the sky or men on a chessboard - xīng luó qí bù
cleanse the flaw and wash away the dirt - dí xiá dàng huì