A policeman makes bed as a demonstration while children look on in Gyirong Town of Xigaze City, southwest China's Tibet Autonomous Region, May 31, 2015. Local pupils in Gyirong Town on Sunday were invited to visit a border police camp to celebrate the International Children's Day. (Xinhua/Hu Junhao) 

Policewomen take photos with a girl in Gyirong Town of Xigaze City, southwest China's Tibet Autonomous Region, May 31, 2015. Local pupils in Gyirong Town on Sunday were invited to visit a border police camp to celebrate the International Children's Day. (Xinhua/Hu Junhao)

A policeman helps a girl skateboarding in Gyirong Town of Xigaze City, southwest China's Tibet Autonomous Region, May 31, 2015. Local pupils in Gyirong Town on Sunday were invited to visit a border police camp to celebrate the International Children's Day. (Xinhua/Hu Junhao)