The Jinan-Qingdao high-speed railway started a joint test recently. With a designed speed of 350 kilometers per hour, the 307.9-kilometer railway is expected to be put into operation at the end of 2018. (Photos/Xinhua)

Aerial photos taken on Aug. 10, 2018 show a comprehensive inspection train running on the Jinan-Qingdao high-speed railway in Zouping section in Binzhou City, east China's Shandong Province.