China's new deep-sea manned submersible Fendouzhe (Striver), onboard the scientific research ship Tansuo-1, returned to the port in the city of Sanya on Saturday morning, after completing its ocean expedition. (Photos: Xinhua)

The submersible set a national record by diving to a depth of 10,909 meters in the Mariana Trench during the expedition.

Crew members of Tansuo-1 disembark from the vessel at the Nanshan port in Sanya, south China's Hainan Province, Nov. 28, 2020.