Recently back from a trip to Shanghai. Please be aware that any massage offered to you on the street will almost certainly lead to a robbery. It sounds like common sense I know but you're feeling horny and the boy is beautiful. This wasn't some back alley in the middle of the night. It was in the afternoon just meters away from the main shopping street, Nanjing Street. My water was drugged, the boy disappeared and was replaced by four unpleasant well built Chinese guys. I paid 1300 rmb which was all the cash I had on me and was allowed to leave.
As an appendage. From that point on whenever I was approached by someone offering massage if I said no, no, no then they followed me down the street but if I said
"It's not a massage, it's a robbery"." they left immediately. This is well organised and I have no doubt the police are well aware of this. No Chinese were ever approached.