Children wearing roller skates perform stunts in Xi'an capital city of Northwest
China's Shaanxi Province. Their average age is three years old. Mao Zedong,
Chairman of the first generation of the Central Leadership of the Communist Party of
China, issued a call "Promote Physical culture and build up the people's health" 50
years ago. Now the concept of improving health among the entire Chinese people are
deep rooted.

Xinhua Photo by Jiao Weiping