Polygyny and concubinage were very common in Mongol society especially for powerful Mongol men. Yasa permitted the institutions of polygamy and concubinage so characteristic of southerly nomadic peoples. Many priests did not live in celibacy but in concubinage. Here, the Church dealt with issues of simony, concubinage of the clergy. Hong Kong officially abolished the Great Qing Legal Code in 1971, thereby making concubinage illegal. Concubinage differed from marriage chiefly in the status of children born from the relationship. They became associated with concubinage to the nobility. Chinese men in Hong Kong could practice concubinage by virtue of the Qing Code. The main function of concubinage was producing additional heirs, as well as bringing males pleasure. Not doing so was seen as evidence of concubinage, particularly until the 1970s.