Yu Changqing, a man in his 70s, does bike stunts with his German friend at Deshengmen Square in Beijing on Sept 8, 2010. [Photo/Xinhua]
![Yu Changqing, a man in his 70s, does bike stunts with his German friend at Deshengmen Square in Beijing on Sept 8, 2010. [Photo/Xinhua]](http://images.china.cn/attachement/jpg/site1007/20100909/001372a9a93f0df2c16025.jpg "Yu Changqing, a man in his 70s, does bike stunts with his German friend at Deshengmen Square in Beijing on Sept 8, 2010. [Photo/Xinhua]")
