Stewardesses pose on the platform at Zhengzhou East Railway Station in Zhengzhou, Central China’s Henan province, July 9, 2017. The high speed railway linking Zhengzhou of Henan and Lanzhou of Northwest China’s Gansu started operation formally on July 9. The shortest travel time of the railway between Zhengzhou and Lanzhou was shortened to less than five hours.[Photo/Xinhua]

Passengers show tickets on the train G2021, the first train of the high speed railway from Zhengzhou to Lanzhou, July 9, 2017. [Photo/Xinhua]

A machinist checks the train G2021 before its departure at a railway station, July 9, 2017.[Photo/Xinhua]

The train G2021, the first one of the high speed railway from Zhengzhou to Lanzhou, arrives at a railway station in Luoyang, Central China’s Henan province, July 9, 2017. [Photo/Xinhua]