During the epidemic, children were checked by plane. According to the official inquiry, unaccompanied children should be accompanied by their parents or guardians to the check-in counter at the airport, fill in the boarding application form and hand it over to the service personnel, and arrange personnel to meet and take care of the children where they get off the plane. After boarding the unaccompanied children, their parents or guardians should stay at the airport until the flight takes off. Parents or guardians of children should provide Sichuan Airlines with the names, contact addresses and telephone numbers of the pick-up personnel arranged at the flight arrival station. For unaccompanied children on international/regional flights, their parents or guardians are also required to fill in the relevant entry and exit declaration cards and be responsible for the accuracy of the contents. Legal basis: Article 14 of China Civil Aviation Passenger Baggage Transport Rules stipulates that passengers should purchase tickets at the ticket office of the carrier or its sales agent. Passengers purchase tickets with their valid identity documents or other identity documents issued by public security organs, and fill in the passenger reservation form. When purchasing a child ticket or a baby ticket, a valid proof of the date of birth of the child or baby should be provided. Seriously ill passengers must have a certificate issued by the medical unit that they are suitable for the flight, and they can buy tickets only after the carrier agrees. Each passenger should fill out a ticket separately.