106-year-old man Guo Cairu stunts as he practices physical exercises on a community square in Nanjing, east China's Jiangsu Province December 5.

106-year-old man Guo Cairu jumps as he practices physical exercises on a community square in Nanjing, east China's Jiangsu Province December 5.

106-year-old man Guo Cairu crouches as he practices physical exercises on a community square in Nanjing, east China's Jiangsu Province December 5.

106-year-old man Guo Cairu (red) practices Tai Chi with other senior citizens on a community square in Nanjing, east China's Jiangsu Province December 5.

106-year-old man Guo Cairu (R) and ninety-six-year-old Li Yanfu practice Tai Chi on a community square in Nanjing, east China's Jiangsu Province December 5.

106-year-old man Guo Cairu practices Tai Chi on a community square in Nanjing, east China's Jiangsu Province December 5.

106-year-old man Guo Cairu practices with a cudgel on a community square in Nanjing, east China's Jiangsu Province December 5.

(China Daily December 7, 2006)