attaining a position of authority, status, or independence after a long period of endurance as a subordinate.

在基层辛苦干了三十年，他总算媳妇熬成婆，当上了部门主管。

the phenomenon where the oppressed eventually becomes the oppressor, perpetuating a cycle of mistreatment.

这种媳妇熬成婆的恶性循环，在职场霸凌中屡见不鲜。