U.S. Olympic swimmer Michael Phelps swims during filming for a television commercial for Mazda at Yingdong Swimming Pool in Beijing Jan. 13, 2009. [Xinhua/Reuters]
![U.S. Olympic swimmer Michael Phelps swims during filming for a television commercial for Mazda at Yingdong Swimming Pool in Beijing Jan. 13, 2009. [Xinhua/Reuters]](http://images.china.cn/attachement/jpg/site1007/20090115/000bcdb95f1d0ad8d9d921.jpg "U.S. Olympic swimmer Michael Phelps swims during filming for a television commercial for Mazda at Yingdong Swimming Pool in Beijing Jan. 13, 2009. [Xinhua/Reuters]")