秦晋Qín Jìn春秋时秦、晋两国国君几代都互相通婚, 后用‘秦晋’指两姓联姻{(during the Spring and Autumn Period the princes of the states of Qin and Jin were related by marriage through several generations) alliance between two families by marriage; matrimonial ties between two families}: 愿偕～{wish to forge a good relationship by marriage}|结～之好。{(of two families, etc.) be allied through marriage}