A paramilitary policeman wears a mask on a cold morning as people gather for a flag-raising ceremony amid heavy smog at the Tiananmen Square in Beijing

A paramilitary policeman wears a mask on a cold morning as people gather for a flag-raising ceremony amid heavy smog at the Tiananmen Square in Beijing

A paramilitary policeman at Tiananmen Square. Photo: Reuters/ Damir Sagolj

December 15, 2016 6:36 PM (UTC+8)