This year, each registered user of Air China APP will be distributed 4 refund vouchers (2 for domestic flights + 2 for international and regional flights) to his or her personal account. This benefit can only be used by the registered user, after logging in (Air China APP, Air China WeChat /Alipay mini-programs, Air China website: https://m.airchina.com.cn) to fully offset refund service fee for one-way, round-trip, and connecting tickets (same ticket number). For tickets purchased by other channels (Specific regulations refer to refund voucher details), when using refund vouchers, 50% of refund fee will be automatically refunded to Air China wallet as refund return amount. Refund return amount can be used to offset ticket price for purchasing tickets on the Air China's mobile terminals within the validity period (one year). Refund return amount will not be returned if refund occurs voluntarily or for mistakenly purchased tickets or using refund vouchers again after using it. Refund return amount will be returned for non-voluntary refund and its validity will be extended for one year from refund date. Refund vouchers are only applicable to tickets purchased through Air China APP, mini programs and all domestic channels. Registered users of Air China's mobile terminals can assist assignees (children under 12 years old (excluding) or seniors over 60 years old (excluding)) in using this benefit and relevant benefit quota will be deducted. Before using refund vouchers, passengers need to undergo real-name verification. When using refund vouchers, please do not submit ticket refund applications.