1931年9月18日,中国人永远不会忘记的一天。这一天,“九一八”事变爆发,南满铁路柳条湖段的爆炸声,引燃了日本军国主义侵略中国的战火。在蒋介石的“不抵抗主义”政策下,曾经威风凛凛的东北军基本上不战自溃,东北三省迅速沦陷。不久,日军又相继侵略上海、侵占热河,进而将战线推至北平西南的丰台、卢沟桥一带。1937年7月7日夜,日军在卢沟桥附近举行军事演习,诡称有一名日军士兵 September 18, 1931, Chinese people will never forget the day. On this day, the outbreak of the “September 18th” incident and the explosion of the Wicker Lake Railway over the South Manchurian Railway have ignited the war by Japanese militarists in aggression against China. Under Chiang Kai-shek’s “non-resistanceism” policy, the once-mighty Northeast Army basically did not fight and defeated itself, and the three northeastern provinces fell rapidly. Soon, the Japanese troops invaded Shanghai again and invaded Jehol, further pushing the front to Fengtai and Lugouqiao in the southwest of Peiping. On the night of July 7, 1937, the Japanese army held a military exercise near the Lugou Bridge, pretending to have a Japanese soldier