Liu Rui, supervisor of bridge crane team II at Guoyuan Port, walks off a bridge crane at the port in Chongqing, southwest China, Dec. 27, 2017. Guoyuan port, the largest inland waterways port of China, lies on the upper reaches of the Yangtze River and has developed into an important multi-mode transport hub, especially for Sino-Euro trains. Statistics reveal that the throughput of Guoyuan Port reached 6.97 million tonnes in the first half of the year of 2017. "I handle almost 30,000 containers every year." said Liu Rui.(Xinhua/Yin Gang)