The general name of marriage, kinship terms formed by marriage, and the names of parents of two couples to each other. Parents of married men and women call each other by their parents' names. Addressing male in-laws, female in-laws in some areas also teach the address between the parents of the mother, such as the child's michel platini and godmother, which can also be called in-laws.

On the Thinking of the Latent Husband and the Sage: "Since the Spring and Autumn Period, in the Warring States Period, generals and ministers must be in-laws: the younger brother of the queen and the grandson of the Lord. Although they are old, they have not escaped the shackles, so they are not promoted by this official position." "The Book of the Later Han Dynasty Ji Shang Guang Wu Di Guo": "If the emperor is lucky, he must drink swallows from the relatives of officials and ministers and give money and silks, which is incomparable."

The origin of ancient in-laws

The title of "in-laws" first began in the Tang Dynasty. "The Biography of Xiao Song in the New Tang Dynasty" contains: "Jpua, Princess Shang Xinchang, Song's wife entered the DPRK, and Emperor Xuanzong called her in-laws." At first, this title was only popular in the marriage of royalty, and Tang Xuanzong called his biological mother his biological mother, which shows the intimacy of his relationship. Therefore, the Tang Dynasty poet Lu Lun wrote the poem "Wang Xuhua Candle": "The master and the minister are in-laws."

During the Five Dynasties and Ten Kingdoms period, the honorifics of in-laws appeared again. According to Liu Mu's Biography of Ten Days in Five Dynasties, Liu Muxun and Feng Dao were in-laws, who served as butchers. After Feng Dao was dismissed, Li Yu took his place. Li Yu has always hated Feng Dao. After taking over, whenever Feng Dao's mistakes were discovered, Li Yu laughed at Feng Dao in front of Liu Muxun and said, "This is a good thing your in-laws did."