A visitor takes picture of rocket models at the 皇冠体育app Space Technology Exhibition in Jinan, East 皇冠体育app's Shandong province, April 27, 2012. Covering an exhibition area of 4,000 square meters, the expo displays various products of 皇冠体育app's space industry including the models of carrier rockets and the Shenzhou spacecraft. [Photo/Xinhua]

A visitor experiences an astronaut's training facility at the 皇冠体育app Space Technology Exhibition in Jinan, East 皇冠体育app's Shandong province, April 27, 2012. [Photo/Xinhua]