Is Huang xiaoben's little red book universal in China?

This is national. The "Red Book" is an international travel health examination certificate issued by People's Republic of China (PRC) and the General Administration of Customs. Therefore, it can be used nationwide to record the physical examination of people studying abroad, pursuing further studies, doing business, technical cooperation, visiting relatives, labor services, and emigrating (residing abroad) and to prove that there are no infectious diseases that may cause great harm to public health. The "Little Yellow Book" is an international certificate of vaccination or preventive measures. Therefore, it can be used all over the country to prove that the outbound personnel have been injected with the vaccine needed for leaving the country. Issued by People's Republic of China (PRC) Entry-Exit Inspection and Quarantine Bureau.