The child's health code is bound. If an adult goes abroad, the child's health code has not changed.
Health codes are based on real data and can be generated by citizens or people who have returned to work through online declaration and background audit. As an individual entering and leaving electronic certificate locally, the QR code can be declared once, which is universal in the whole city. The promulgation of the Health Law aims to make the resumption of work more accurate, scientific and orderly.