Passengers watch a performance on the bullet train D2685, one of the first groups of trains to operate on the Baoji-Lanzhou high-speed line, as the train departs Xi'an North Railway Station in Xi'an, Northwest China's Shaanxi province, July 9, 2017. A new high-speed track linking Baoji city in Northwest China's Shaanxi province with Lanzhou, the capital of neighboring Gansu province, started operation Sunday. Northwest China's Gansu and Qinghai provinces and Xinjiang Uygur autonomous region are finally connected to China's national high-speed rail network after the operation of 401-kilometer Baoji-Lanzhou line. (Photo/Xinhua)
