Honor guard of the People's Liberation Army (PLA) Hong Kong Garrison is seen during an open day in Hong Kong, south China, on May 2, 2011. The PLA Hong Kong Garrison was open to the public on Monday in celebration of the International Labor Day, which attracted thousands of people from Hong Kong. [Photo/Xinhua]
Honor guard of the People's Liberation Army (PLA) Hong Kong Garrison hold China's national flag during an open day in Hong Kong, south China, on May 2, 2011. [Photo/Xinhua]