Strict. According to the inquiry of senior three. Com, the political review involves the following aspects: no criminal punishment and reeducation through labor, no investigation, prosecution or trial by state organs, no other serious illegal acts, no participation in illegal organizations, and no history of mental illness. In addition to the above conditions, China Southern will also consider the applicant's high school education, English level, computer level, relevant aviation professional knowledge and skills, and relevant work experience. At the same time, the physical condition of the applicant will also be considered. China Southern Airlines Co., Ltd. was established on March 25th, 1995, with blue vertical tail inlaid with red kapok as the company logo. It is the airline with the largest number of transport planes, the most developed route network and the largest annual passenger traffic in China.