Representatives attend a strategic cooperation agreement singing ceremony at "Belt and Road" Land-Sea Linkage Qingdao Summit in Qingdao, east China's Shandong Province, Sept. 6, 2019. The 2019 "Belt and Road" Land-Sea Linkage Qingdao Summit was held here Friday, with the participation of over 500 attendees from home and abroad. (Xinhua/Li Ziheng)