Chinese air force soldiers look at photographs displayed during an activity to mark the 70th anniversary of the July 7 Incident, in Shenyang, Northeast China's Liaoning Province, July 6, 2007. Exactly 70 years ago at Lugouqiao Bridge (Marco Polo Bridge) in suburban Beijing, Japanese aggressors launched an attack against Beijing on July 7, 1937, starting their overall invasion of China.[Xinhua]

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