Before the Jurchens overthrew their Khitan rulers, married Jurchen women and Jurchen girls were raped by Liao dynasty Khitan envoys as a custom which caused resentment by the Jurchens against the Khitan. Liao Khitan envoys among the Jurchens were treated to guest prostitutes by their Jurchen hosts. Unmarried Jurchen girls and their families hosted the Liao envoys who had sex with the girls. Song envoys among the Jin were similarly entertained by singing girls in Guide, Henan. Although the Liao Khitan had superior power over the Jurchens when ruling them were is no evidence that guest prostitution of unmarried Jurchen girls to Khitan men was hated or resented by the Jurchens. It was only when the Liao Khitan forced aristocratic Jurchen families to give up their beautiful wives as guest prostitutes to Liao Khitan messengers that this stirred resentment and anger by the Jurchens. A historian has speculated that this could mean that in Jurchen upper classes, only a husband had the right to his married wife while among lower class Jurchens, unmarried girls virginity and sleeping with Liao Khitan men did not matter and did not impede their ability to marry later. The Jurchens sexual habits and mores seemed lax to Han Chinese, such as marrying with an in law which was one of China's "Ten Heinous Crimes". Jurchens very commonly practiced guest prostitution giving efmale companisons, food and shelter to guests. Unmarried daughters of Jurchen families of lower and middle classes in native Jurchen villages were provided to Liao Kitan messengers for sexual intercourse and amusement as recorded by Hong Hao (Hung Hao). Marco Polo also reported that in Hami (Camul) guest prostitution was practiced with hosts giving their female relatives, sistsers, daughters and wives to guests in their house. Tanguts practiced this guest prostitution.