掐尖子

qiājiānzi ㄑㄧㄚ ㄐㄧㄢ ˙ㄗ

    • to suppress the most outstanding people
    • to hold back the high-flyers

Character by character

Saying俗语俗語

Idiom惯用语 · Rarely used now

Literally
pinch off the tips
Meaning
Originally, pruning shoots; figuratively, suppressing the leading or most outstanding people.

Sources