Generic names, abbreviations and secondary codes of the four major airlines in China.

1. The "four major airlines" in China include China International Airlines, China Southern Airlines, China Eastern Airlines and Hainan Airlines. Specifically:

(1) China International Airlines Limited, referred to as "Air China". The secondary code is CA.

(2) China Southern Airlines Company Limited, hereinafter referred to as "China Southern Airlines". The secondary code is CZ.

(3) China Eastern Airlines Company Limited, referred to as "China Eastern Airlines". The secondary code is MU.

(4) Hainan Airlines Co., Ltd., hereinafter referred to as "HNA". The secondary code name is Hu.

Expand some other airlines:

Shenzhen Airlines, Shenzhen Airlines, secondary code ZH. Xiamen Airlines, Xiamen Airlines, the secondary code is MF. Shanghai Airlines refers to Shanghai Airlines, and the second-class airline is FM. Shandong Airlines, Shandong Airlines, the secondary code is SC. Sichuan Airlines, Sichuan Airlines, the secondary code is 3U. United Airlines, United Airlines, secondary code KN.