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(101220) -- BEIJING, Dec. 20, 2010 (Xinhua) -- Chinese President Hu Jintao delivers a speech during a celebration rally to mark the successful launch of the nation's 2nd lunar probe Chang'e-2 at the Great Hall of the People in Beijing, capital of China, Dec. 20, 2010. Chang'e-2 was blast off on Oct. 1, 2010. (Xinhua) (wyo) (KEYSTONE/XINHUA/)