Medical insurance is different in different regions, but the pages are not very different. It depends on the specific local regulations, which can be referred to as follows.
Look at Article 1 (Promulgated by Order No.92 of Shanghai Municipal People's Government on October 20th, 2000/KLOC-0) BR/ > (Purpose and Basis)
In order to ensure the basic medical needs of employees, according to the State Council's "Shanghai Implementation"