儿女亲家

Explanation: The two married sons and daughters of that marriage and family relationships 　　Usage: Partial official; as object; that the relationship between relatives 　　Source: "Hua Yue Hen" 52 back: "calendar for several years, has launched wealth, but also married to a pro, and bald to be a children's relatives." 　　Examples: Whether human guarantor, you and he is ~, Ye Hao you help him a favor. ★ Hong Shen "Hong rice" Act II