ABOARD XIANGYANGHONG 09, June 15 (Xinhua) -- The three sea divers Ye Cong, Cui Weicheng and Yangbo inside China's manned deep-sea submersible Jiaolong delivered their best wishes to the Shenzhou-9 spacecraft launch from 6,055 meters below the sea of the Mariana Trench on Friday.

The country's Shenzhou-9 manned spacecraft Thursday completed its final full-system drill before its planned launch in mid-June.

The dive, which began at 9 a.m. local time Friday (2300 GMT Thursday), is the first of a series of six scheduled ones to attempt the country's deepest-ever 7,000-meter manned dive.