Ruzhui means joining the wife's household in marriage, and a man who does it is a zhuixu. The husband moves in with her family, and in traditional society he usually lost standing, which is why the word can carry a note of shame. It was a practical arrangement for families with daughters but no sons. Pursuit of Jade starts from a ruzhui union that the heroine enters to save her family's house, and The Vanishing Beauty has a husband who married into her family.
Dramas
Where it comes up

The Vanishing Beauty: The Marriage Drama Where the Wife Plans the Divorce Like a Takeover
A guide to the Tencent Video marriage drama The Vanishing Beauty as it airs: the heiress who treats her divorce as a fight over evidence and company control, Li Yitong's modern lead, the lawyer and what Chinese divorce law says.

Pursuit of Jade: The Butcher's Daughter, the Marquis and the Show Built Around Him
A butcher's daughter and a disgraced marquis in hiding: how a familiar costume-romance formula got a heroine who carries the load, a hero whose look is part of the design, and a simultaneous release on Tencent Video, iQIYI and Netflix.
