There are no hard and fast rules, just bind the child's ID number. Children belong to minors and need to be bound to their parents' Alipay. Login to the parent's Alipay to open the health code, and there is a family agent in the lower right corner. Click to enter the binding. Enter the child's identity information, name, relationship with parents, whether he has been to high-risk areas recently, and whether he has any physical discomfort, such as fever and cough. After filling in the information, the binding is successful.