A chimpanzee eats zongzi, rice dumplings, wrapped in bamboo or reed leaves, at a zoo in Nanjing, capital of East China’s Jiangsu province, June 6, 2011. The snack is traditionally eaten during Dragon Boat Festival, or Duanwu Festival, which falls on the fifth day of the fifth month on the Chinese lunar calendar. [Photo/CFP]

Liu Jiafu, 65, plays with iron and hula hoops, which weigh about 5 kilograms, at Longtan Lake Park in Beijing, June 6, 2011. He said the exercise helps him move every part of his body and keeps him healthy. [Photo/CFP]