![CHINA-ZHENGZHOU-XUZHOU-HIGH-SPEED RAILWAY-OPERATION (CN)](135677912_14734941417811n.jpg)
A senior couple show their tickets on the first train operating on Zhengzhou-Xuzhou high-speed railway, Sept. 10, 2016. A new high-speed railway (HSR) line between Zhengzhou, capital of central Henan Province, and Xuzhou in eastern Jiangsu Province started its operation on Saturday, making the total length of high-speed track in the country over 20,000 km. Trains running on the 360-kilometer-long track travels at a speed of 300km per hour at the early stage of operation. (Xinhua/Li An)