Under the "sex, marriage, and clan" scheme, men who needed sex outside of marriage could formally take concubines. But, however much a concubine may have been treated affectionately, she could not lightly disrespect the first wife or challenge her authority.
在「性、婚姻、家族」三合一的設計中，男人若有額外的性需求，可以名正言順地納妾；而納進來的妾再受寵愛，也不能輕易冒犯元配，挑戰正房的權威。