Eight-year-old boy Bi Sheng, who is the first visitor to dive into the swimming pool at the National Aquatics Center, gestures in front of the camera, on June 20, 2009. The 'Water Cube' opened the warm-up pool to public swimmers last Saturday. People who want to swim there have to get a health check and a deep water certificate before entering the pool. The pool will be open Thursday to Sunday from 2 pm to 7 pm until October. The entrance fee is 50 yuan ($7) for two hours. [CFP]