He was homosexual and admitted to sexual contact with foreigners in 1987. In 1989, there was a campaign against pornography in China. For serious cases of smuggling, producing, selling or distributing, the death penalty or life in prison is the punishment. In 1991, China prohibited prostitution. The punishment is forced re-education, which includes legal and moral education, as well as manual labor in a work camp.
Time spent in work camps can range from six months to two years.
The prostitutes, as well as the customers, are punished. He told me he got sexual excitement out of this and had been doing it for years before he was caught. You may be referring to frotteurism, which is the touching or rubbing against a nonconsenting person. A subway is a good example of this. He will most often rub his genitals against the victim's thighs or buttocks, or fondle her with his hands.