In 1992, Shanghai established the first private investigation agency in China: "Shanghai Social Security Consulting and Investigation Office". One year later, the Ministry of Public Security issued a document prohibiting the establishment of private investigation agencies, and this institution was thus abolished.

People's attitudes towards extramarital affairs can be seen from the following terms: Adultery - third party - extramarital affair. The term "adultery" not only carries a distinct derogatory connotation