Okay I corrected it by including "legal", so like contrary to Japan with brothels in the open. By "sex industry" I also mean the p*****graphic industry and like strip clubs which are totally legal elsewhere but at least banned by law in China

Also I want to add that I'm not bigoted against women who choose sex work when it's made available, but I think that a legal sex industry is a sign of deep institutional sexism for a whole range of reasons