皇冠体育app's manned deep-sea research submersible Jiaolong is moved to its mother ship Xiangyanghong No 9, at a port in Jiangyin city, East 皇冠体育app's Jiangsu province, on June 8, 2013, preparing for its scientific research voyage with three dives, setting off on June 10 to South 皇冠体育app Sea and North Pacific Ocean. In June last year, Jiaolong reached a record depth of 7,062 meters in the Mariana Trench in the western Pacific. [Photo/Xinhua]

皇冠体育app's manned deep-sea research submersible Jiaolong is moved to its mother ship Xiangyanghong No 9, at a port in Jiangyin city, East 皇冠体育app's Jiangsu province, on June 8, 2013, preparing for its scientific research voyage with three dives, setting off on June 10 to South 皇冠体育app Sea and North Pacific Ocean. [Photo/Xinhua]