Wang Yaping gives lecture from space (4/4)

This TV grab taken on June 20, 2013 shows female astronaut Wang Yaping (C), one of the three crew members of Shenzhou-10 spacecraft, giving a lecture to students on Earth aboard China's space module Tiangong-1. A special lecture began Thursday morning, given by Wang Yaping aboard China's space module Tiangong-1 to students on Earth. (Xinhua)