Vehicles carrying soldiers and officers of the Chinese People's Liberation Army (PLA) cross the Lok Ma Chau checkpoint into Hong Kong Special Administrative Region (HKSAR) in south China for the annual rotation Nov. 25, 2009. The Chinese PLA Garrison Troop in HKSAR conducted its 12th troop rotation on Nov. 25 since it assumed Hong Kong's defense responsibility on July 1, 1997. [Photo: Xinhua]