翅膀硬了

翅膀硬了

Literally means:

(birds) get well fledged

Actually means:

have grown up

Literally it means when birds get fully-grown their wings will grow hard enough so they can fly freely and independently.

It figuratively means one is able to live and work independently. It usually connotes one becomes independent of others. Sometimes it also connotes a criticism of those who would defy or abandon their sponsors.

本义是指鸟类长大，翅膀发育好了（长硬了），可以独立、自由地飞行了。

比喻具有独立工作或生活的能力。多表示不再依靠别人。有时用来批评某人不服从或试图甩开培养他的人。