A paramilitary policeman displays a peculiar stone during a stone show at the Khunjerab Pass of Xinjiang Uygur autonomous region, June 17, 2012. Border policemen in the Khunjerab Pass, which has an altitude of 5,100 meters, hold a stone show to display the stones they collected in spare time. [Photo/Xinhua]

Paramilitary policemen display peculiar stones they collected in spare time during a stone show at the Khunjerab Pass of Xinjiang Uygur autonomous region, June 17, 2012. [Photo/Xinhua]