Paramilitary policewomen of Nanyi border police station patrol a street in Nanyi village, Mainling county of Tibet autonomous region, March 24, 2012. All the 19 officers of Nanyi border police station are women and were born in the 1980s. Their duty is to maintain peace in the scenic areas in Nanyi. [Photo/Xinhua]

Paramilitary policewomen salute as a vehicle carrying tourists drive past them in Nanyi village, Mainling county of Tibet autonomous region, March 24, 2012. [Photo/Xinhua]