Scientist Yang Qunhui waves as she comes out of the Jiaolong manned deep-sea submersible after a deep-sea dive into the south China sea, June 20, 2013. The Jiaolong manned deep-sea submersible on Thursday carried its first female scientist Yang Qunhui, associate professor of the School of Marine and Earth Science at Tongji University, as crew member during a deep-sea dive. (Xinhua/Zhang Xudong)