Legal Analysis: Refund Terms: F, C: Submit to China Eastern Airlines website before take-off: Free: Submit to China Eastern Airlines website after take-off 10%. (For different refund fees, emergency orders must be returned by phone, which is actually subject to airline audit) Y, B, E and H: 5% before departure, 10% after flight departure (for different refund fees, emergency orders must be returned by phone, which is actually subject to airline audit) L, M, N and R. Submit to China Eastern Airlines website after departure: 30. Among them, it is actually subject to airline audit) S, V, T: submit it to China Eastern Airlines website before take-off: 40%, and submit it to China Eastern Airlines website after take-off: 50% (the refund fee is different, and emergency orders must be refunded by phone, which is actually subject to airline audit) P: 20%.

Change the flight free of charge after the scheduled departure time. B, E, H: Change the flight free of charge before the scheduled departure time (inclusive). A 5% change fee will be charged after the scheduled departure time of the flight. L, m, n, r: change fee of 10% before the scheduled departure time of the flight (inclusive). A 20% change fee will be charged after the scheduled departure time of the flight. P: If the flight is changed to three days later, it is allowed to be changed when the corresponding cabin is open, and the difference caused by ticket purchase in different pre-sale periods will not be refunded or replenished. S, V, T: 20% change fee will be charged before or including the scheduled departure time of the flight. After the scheduled departure time of the flight, a 30% change fee will be charged. Y: Change the flight free of charge before the scheduled departure time. A 5% change fee will be charged after the scheduled departure time of the flight.

Only first-class and full-price tickets can be refunded free of charge, and other discounts will generate handling fees; Refund is not allowed if the discount is less than 40% (inclusive), but only the maintenance fee and fuel fee, 55-45 discount, 50% refund fee, 75-6 discount, 20% discount, more than 20% discount, 5% deduction two hours before take-off, and10% deduction two hours after take-off; There is no charge for first class and business class before take-off, and 10% after take-off.

Legal basis: Article 76 of the Civil Aviation Law of People's Republic of China (PRC). Aircraft flying in People's Republic of China (PRC) must abide by uniform flight rules.

Civil aircraft carrying out visual flight shall abide by the rules of visual flight and keep a safe distance from other aircraft and ground obstacles.

Civil aircraft engaged in instrument flight shall abide by the instrument flight rules.

The flight rules are formulated by the State Council and the Central Military Commission (CMC).