Until the 1980s, the subject of prostitution was not viewed as a major concern for the National People's Congress. The PRC's first criminal code, the Criminal Law and the Criminal Procedure Law of 1979 made no explicit reference to the activities of prostitutes and prostitute clients. Legal control of prostitution was effected on the basis of provincial rulings and localised policing initiatives until the introduction of the "Security administration punishment regulations" in 1987. The Regulations makes it an offence to "sell sex" (卖淫) and to "have illicit relations with a prostitute" (嫖宿暗娼).