"Fendouzhe" means "striver" in Chinese.
Three divers sent back a group photo with each person carrying a food plate in hand after four hours of the mission.
According to the exploration team, the crew will work for 6 hours in data collection and actual exploration when the vessel reaches the deepest spot.
That spot, known as the Challenger Deep, is roughly 10,900 meters deep.
The water pressure is 110 kPa, equivalent to 2,000 African elephants.
Powered by a lithium battery, the Striver can unload the equipment onboard and pick up samples from the surrounding environment with its flexible robotic arms.