PLA soldiers jump through rings of fire during a war game performance for the public on an open day at the Shek Kong Barracks in Hong Kong on June 30, 2013. Shek Kong Barracks was open to the public on Sunday in celebration of the 16th anniversary of the Special Administrative Region's return to China. [Photo/Agencies]

PLA soldiers stand guard behind life-sized models of solders during an open day at the Shek Kong Barracks in Hong Kong on June 30, 2013. [Photo/Agencies]