Concubinage has a long history and was common through the early 20th century .

男人纳妾的历史悠久，在19世纪早期也非常普遍。

Supposedly , prostitution , concubinage , bride-selling , slavery and drug addiction were abolished .

据说，卖淫，纳妾，卖老婆，奴役和吸毒当时被废除了。

Confucianism valued marriage and children but also allowed concubinage . Sex was viewed as a necessary human function .

儒家学说重视婚姻和生育，并且允许纳妾，性被看作是人的必须得一项功能。

So concubinage has been an institution for thousands of years and the chinese have always had an exceptionally pragmatic attitude toward sex .

所以千百年来，纳妾早已成为体制，中国人对性也一直持有异常务实的态度。