A new record has been created by China's unmanned submersible Haidou-1. During a recent expedition in Mariana Trench in the Pacific Ocean, the vehicle dived four times at a depth of over 10,000m, sending back visuals of the seabed.WATCH MORE: https://thestartv.com/c/newsSUBSCRIBE: https://cutt.ly/TheStarLIKE: https://fb.com/TheStarOnline