Before boarding, the passengers and their luggage must go through security checks. Unaccompanied children, the sick and disabled travelers, pregnant women, the blind, the deaf, or criminals and other special visitors, shall comply with the provisions of the airlines and go through security check. Passengers with infectious diseases, mental illness or health conditions that may endanger or affect other passengers will fail the security check. According to the relevant provisions of the government, airlines have the right to refuse the boarding of passengers, passengers failing the security check will go through the voluntary refund processing.
Source: China Aviation Administration of China