The laws of China did not sanction polygamy but they did permit concubinage. The man could have but one wife, who was distinguished by a proper title, while the concubines were inferior and their children belonged to the wife. If the wife had borne sons, it was considered somewhat discreditable for a man to take a concubine, and if he did and brought her into the same home with his wife there was usually great disturbance, which accorded with one of their proverbs, That nine women out of ten are jealous. These concubines were generally purchased with money and were from the lower classes, where poverty always prevailed, making occasion for the selling of the girls. In a few cases, concubinage in a family might have arisen through the wife's desire to have women and children to serve her, as they would come under her control. There were seven grounds for divorce in China, being, barrenness, adultery, disobedience to the husband's parents, talkativeness, thievery, ill temper, and malignant disease. But divorce was not for the wife, for no offense, of whatever kind, on the part of the husband, gave a woman any right to claim a divorce from him. "Any of these, however, may be set aside by three circumstances: the wife having mourned for her husband's parents; the family having acquired wealth since the marriage; and the wife being without parents to receive her back."[72] The family of the woman was a great factor against divorce, not only on account of the unjustness or disgrace attached to it but also because when the woman married she gave up her home and no provision was made for her further support and especially so if her parents were dead as the property was divided among her brothers and she would be looked upon as an alien. Hence a husband would not be allowed to divorce his wife, except for a most valid cause. It was considered disreputable for widows to remarry. But this was not true of a widower as he could marry whomever he should choose, nor did he have to wait for any length of time for the ceremony because of any period of mourning for his first wife. If the widow herself should be unwilling to marry, the law would protect her against those trying to make her do so. One of the strong motives against marrying again was that as long as she remained a widow she would be absolute mistress of herself and her children. The widow was occasionally sold as a concubine by her father-in-law, but this was rare, as it was considered a great degradation and especially as she would be separated from her children.