In fact, this is a local regulation, which is based on Article 11 of Chapter II and Article 32 of Chapter V of the Law of People's Republic of China (PRC) on the Prevention and Control of Infectious Diseases, and it is a specific management method for disease prevention.
Generally speaking, it is divided into provinces, autonomous regions or municipalities directly under the central government, so the health certificate issued by the municipal and county health administrative departments is no problem in the province, but it may be biased because of the different implementation of local laws and regulations in different provinces.
Hehe, in fact, this is also an income to increase local finance. Do you think you can't pay for it?
I looked up a lot of information, but I can't find a direct answer to this question. Later, I learned that in order to effectively and quickly prevent infectious diseases, the State Council requested the local government by administrative order. If anything happens, the local government will be responsible.