Marriages are absolutely forbidden between men and women of the same lineage. It often occurs when the parents approve the young man's and woman's choice but cannot afford the wedding ceremony. Thus the young couple arranges to meet each other at a certain place. When they come there, the young man takes the woman to his house to be his wife. Matrimonial life of the Mong is harmonious.
Divorce is rare.
They refrain from eating green vegetables within three days of Tet. To enjoy Spring, after a working day, the young men and women often play khen and lip organs to express their feelings to their partners.