Trainees attend the training course in Xi'an, northwest China's Shaanxi Province, July 22, 2019. A total of 29 female trainees recently attended the training courses composed mainly of basic knowledge on high-speed railway as driving regulations and skills. Those who passed the training courses will become the first batch of female bullet train drivers in China. (Xinhua/Li Yibo)

Trainees attend the training course in Xi'an, northwest China's Shaanxi Province, July 22, 2019. A total of 29 female trainees recently attended the training courses composed mainly of basic knowledge on high-speed railway as driving regulations and skills. Those who passed the training courses will become the first batch of female bullet train drivers in China. (Xinhua/Li Yibo)

Trainee Shi Xinxin waits to board the bullet train D6809, July 22, 2019. A total of 29 female trainees recently attended the training courses composed mainly of basic knowledge on high-speed railway as driving regulations and skills. Those who passed the training courses will become the first batch of female bullet train drivers in China. (Xinhua/Li Yibo)

Trainees queue up to walk out of Baoji South Railway Station in Baoji, northwest China's Shaanxi Province, July 22, 2019. A total of 29 female trainees recently attended the training courses composed mainly of basic knowledge on high-speed railway as driving regulations and skills. Those who passed the training courses will become the first batch of female bullet train drivers in China. (Xinhua/Li Yibo)

China's first-generation female electric locomotive drivers Liu Weiping (1st L) and Gao Kunpu (2nd L) talk with trainees in Baoji, northwest China's Shaanxi Province, July 22, 2019. A total of 29 female trainees recently attended the training courses composed mainly of basic knowledge on high-speed railway as driving regulations and skills. Those who passed the training courses will become the first batch of female bullet train drivers in China. (Xinhua/Li Yibo)

China's first-generation female electric locomotive driver Gao Kunpu (1st L) talks with trainees in Baoji, northwest China's Shaanxi Province, July 22, 2019. A total of 29 female trainees recently attended the training courses composed mainly of basic knowledge on high-speed railway as driving regulations and skills. Those who passed the training courses will become the first batch of female bullet train drivers in China. (Xinhua/Li Yibo)

Trainees walk out of Baoji South Railway Station in Baoji, northwest China's Shaanxi Province, July 22, 2019. A total of 29 female trainees recently attended the training courses composed mainly of basic knowledge on high-speed railway as driving regulations and skills. Those who passed the training courses will become the first batch of female bullet train drivers in China. (Xinhua/Zhang Bowen)

Trainees learn the bullet train driving skills in Xi'an, northwest China's Shaanxi Province, July 22, 2019. A total of 29 female trainees recently attended the training courses composed mainly of basic knowledge on high-speed railway as driving regulations and skills. Those who passed the training courses will become the first batch of female bullet train drivers in China. (Xinhua/Zhang Bowen)

Trainee Shi Xinxin gets off a bullet train at Baoji South Railway Station in Baoji, northwest China's Shaanxi Province, July 22, 2019. A total of 29 female trainees recently attended the training courses composed mainly of basic knowledge on high-speed railway as driving regulations and skills. Those who passed the training courses will become the first batch of female bullet train drivers in China. (Xinhua/Zhang Bowen)

Trainees queue up to walk out of Baoji South Railway Station in Baoji, northwest China's Shaanxi Province, July 22, 2019. A total of 29 female trainees recently attended the training courses composed mainly of basic knowledge on high-speed railway as driving regulations and skills. Those who passed the training courses will become the first batch of female bullet train drivers in China. (Xinhua/Li Yibo)

Trainees Shi Xinxin (L) and Chang Yirong talk aboard the bullet train D6809, July 22, 2019. A total of 29 female trainees recently attended the training courses composed mainly of basic knowledge on high-speed railway as driving regulations and skills. Those who passed the training courses will become the first batch of female bullet train drivers in China. (Xinhua/Li Yibo)

Trainee Gao Yang attends an observation and learning activity at the driver's cab aboard the bullet train D6809, July 22, 2019. A total of 29 female trainees recently attended the training courses composed mainly of basic knowledge on high-speed railway as driving regulations and skills. Those who passed the training courses will become the first batch of female bullet train drivers in China. (Xinhua/Li Yibo)