“七七事变”爆发后,日本人反咬一口,北平特务机关长松井太久郎向第29军副军长兼北平市长秦德纯“交涉”。由于此时军长宋哲元还在山东老家,负责卫戍北平的第37师师长冯治安正从保定往回赶,北平主事的人就剩秦德纯一个人,他把电话打到宛平县长王冷斋那儿(事发时,王没在宛平,而在北平),命其查明真相。王冷斋立即把电话打到宛平金振中那里。金营长通查后,发现守城士兵没人开枪,更没有日军士兵在宛平城内。王冷斋上报情况,秦德纯命其跟松井交涉。这时已是1937年7月 After the outbreak of the “Seventy-Seven Incident”, the Japanese took a bite out of their mouth and the mediation director of Matsui Matsui, chief of the Peiping Special Forces, made a statement to Qin Dechun, deputy commander of the 29th Army and Mayor of Peking. Since the commander of the military commander Song Zheyuan was still at his hometown in Shandong at that time, Feng Zhian, who was in charge of defending the 37th Division of Peiping, was back from Baoding. The only one left in Peking was left with a man named Qin Dechun. He telephoned Wanping County magistrate Wang Lengzhai there When the incident, the king was not Wanping, while in Peking), ordered to find out the truth. Wang Lengzhai immediately hit the phone Wanping Jin Zhen in there. After checking through the gold battalion commander, he found that no soldier defended the city to shoot and even no Japanese soldier was in Wanping City. Wang Leng Zhai reported the situation, Qin pure negotiations with Matsui. It was July 1937