Crew members are seen on the dredging vessel Tian Kun Hao at a port in Shenzhen, south China's Guangdong Province, Oct. 13, 2020. The manned submersible Jiaolong, its mothership Shenhai Yihao (DeepSea No. 1), and dredging vessel Tian Kun Hao will be displayed during the China Marine Economy Expo (CMEE). (Xinhua/Mao Siqian)
