A foreign container freighter is docked at a fully automatic container terminal of the Port of Qingdao in east China's Shandong Province, May 4, 2018. Home to Tsingtao Beer and home appliance giant Haier, Qingdao is becoming a more attractive place to run important multilateral events. In June, the coastal city will host the 18th summit of the Shanghai Cooperation Organization (SCO). (Xinhua/Li Ziheng)

Aerial photo taken on May 7, 2018 shows a cruise port in Qingdao, a coastal city in east China's Shandong Province. Home to Tsingtao Beer and home appliance giant Haier, Qingdao is becoming a more attractive place to run important multilateral events. In June, the coastal city will host the 18th summit of the Shanghai Cooperation Organization (SCO). (Xinhua/Guo Xulei)

A gantry crane loads cargo onto a freight train bound for Central Asia at the Jiaozhou Bay International Logistics Harbour in Qingdao, east China's Shandong Province, May 7, 2018. As of Tuesday, a total of 3039 freight trains from China to Central Asian countries have departed from Qingdao, a nodal city on the economic corridor linking China, Central Asia and Europe. Qingdao will also host the 18th Shanghai Cooperation Organization (SCO) Summit in June. (Xinhua/Guo Xulei)