Honour guards of the Chinese People's Liberation Army (PLA) rehearse a military parade, the first of its kind associating with their counterparts from other countries, ahead of Mexico's 200th independence anniversary in Mexico City, capital of Mexico, Sept. 11, 2010. Mexico will celebrate its 200 anniversary of Independence on September 15. A military parade will be held the next day. Honor guards from some invited countries such as China, the United States, Russia and Spain will join the parade. [Xinhua]