Answer:On the night of July 7, 1937, during an exercise near the Lugou Bridge southwest of Peiping, the Japanese army asked to enter Wanping County to search under the pretext that a soldier was "missing", but the 29th Army of the Chinese defenders sternly refused. The Japanese then opened fire on the Chinese defenders and shelled Wanping City. The 29th Army rose to the war. This is the Qiqi Incident, also known as the Lugou Bridge Incident, which shocked China and abroad. The July Seven Incident was the beginning of the Japanese imperialist all-out war of aggression against China and also the starting point of the Chinese nation's all-out war of resistance.
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