Photo taken Dec. 24, 2015 shows a high -speed train in Liuyuan South Station, northwest China's Gansu Province. Saturday marks the one-year anniversary of the operation of the high-speed railway linking Lanzhou, capital of northwest China's Gansu Province, and Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region. (Xinhua/Cai Zengle)

Photo taken April 23, 2015 shows a high-speed train moving past a Yadan landform in northwest China's Xinjiang Uygur Autonomous Region. Saturday marks the one-year anniversary of the operation of the high-speed railway linking Lanzhou, capital of northwest China's Gansu Province, and Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region. (Xinhua/Cai Zengle)

A high -speed train runs on a bridge in northwest China's Xinjiang Uygur Autonomous Region, Nov. 3, 2015. Saturday marks the one-year anniversary of the operation of the high-speed railway linking Lanzhou, capital of northwest China's Gansu Province, and Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region. (Xinhua/Cai Zengle)

Photo taken Aug. 19, 2015 shows a high -speed train moving past a grape garden, northwest China's Xinjiang Uygur Autonomous Region. Saturday marks the one-year anniversary of the operation of the high-speed railway linking Lanzhou, capital of northwest China's Gansu Province, and Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region. (Xinhua/Cai Zengle)

A high -speed train runs past the Gobi Desert in northwest China's Xinjiang Uygur Autonomous Region, Nov. 25, 2015. Saturday marks the one-year anniversary of the operation of the high-speed railway linking Lanzhou, capital of northwest China's Gansu Province, and Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region. (Xinhua/Cai Zengle)

A high-speed train runs past the Tianshan Mountain in northwest China's Xinjiang Uygur Autonomous Region, Dec. 3, 2015. Saturday marks the one-year anniversary of the operation of the high-speed railway linking Lanzhou, capital of northwest China's Gansu Province, and Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region. (Xinhua/Cai Zengle)

Photo taken Aug. 4, 2015 shows a high -speed train running past rape flowers, northwest China's Qinghai Province. Saturday marks the one-year anniversary of the operation of the high-speed railway linking Lanzhou, capital of northwest China's Gansu Province, and Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region. (Xinhua/Cai Zengle)

A high -speed train runs past the cotton fields in northwest China's Xinjiang Uygur Autonomous Region, Oct. 16, 2015. Saturday marks the one-year anniversary of the operation of the high-speed railway linking Lanzhou, capital of northwest China's Gansu Province, and Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region. (Xinhua/Cai Zengle)