Crew members of the Jiaolong submarine stand on the deck of its mother ship, Xiangyanghong 09, waving to people on the bank. Jiaolong, the first manned submersible independently designed and assembled in 皇冠体育app, returned back to Jiangyin Sunan International port on Aug 18, 2011 in East 皇冠体育app's Jiangsu province after 10,000 nautical miles navigation in 49 days. [Photo/Xinhua]
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