NBA star center Yao Ming leads children from quake-hit regions to visit the roof garden of the Saudi Arabia Pavilion at the Expo Site in Shanghai, July 25, 2010. Yao Ming, Jin Jing and other Chinese stars visited several pavilions at the Expo Site with a group of children from quake-hit Sichuan and Qinghai provinces on Saturday, as part of "Touring the Expo with Stars" initiated by some Chinese celebrities. [Photo/Xinhua]