China livestreams manned submersible dive at Mariana Trench's bottom

China livestreamed its new manned submersible parked at the bottom of the Mariana Trench in Western Pacific Ocean, days after it set a new diving record to the deepest location on Earth. Striver, or Fendouzhe, dived again to a depth of over 10,000 meters to check its capability in carrying out deep-sea scientific exploration, and Canghai, another sub, transmitted high-definition signals for the live broadcast, using a 4K signal acquisition and transmission system. 

Three explorers were onboard.