It is the international travel health examination certificate. (The function is to prove that "this physical examination has not found infectious diseases that may cause great harm to public health"-the "conclusion" on the last page of Little Red Book)
It is understood that health examination records include blood pressure, pulse, developmental status, nutritional status, skin, lymph nodes, eye vision, corrected vision, color discrimination, ear, nose, throat, thyroid gland, lung, heart, abdomen, spine, limbs, urogenital system, anus, nervous system, electrocardiogram, chest X-ray examination, laboratory examination and other examination items and visa date. The use period is one year, signed by the doctor and sealed by the quarantine organ.
Xiao Huangben:
It is an international certificate of vaccination or preventive measures (all vaccination records will be on it)
Attention! According to reports, frontier health and quarantine personnel have the right to refuse entry and exit, or even take compulsory quarantine measures, if entry-exit personnel do not carry the Yellow Book.
Therefore, for those who go abroad for personal reasons, after or at the same time having a valid passport, a valid visa, an entry-exit registration card and a notarial certificate, an important thing that cannot be ignored is to get a small yellow book.