入赘

入赘	rù zhuì	to go and live with one's wife's family, in effect becoming a member of her family
入	rù	to enter; to go into / to join; to become a member of / (bound form) to conform to (as in 入时) / abbr. for 入声 / (on product packaging, after {number n} + {classifier}) containing (n pieces) (from Japanese 入 "iri")
赘	zhuì	(bound form) superfluous / (bound form) (of a man) to move into the household of one's in-laws after marrying; (of the bride's parents) to have the groom join one's household