2002年2月10日夜，山东省曲阜市机关大院内静谧而安宁。几幢办公大楼在夜幕的衬托下愈显庄严肃穆，只有大楼门前彻夜不眠的大红灯笼陪伴着保安员，守护着大院的安全。夜间11点30分，市机关大院保安班夜班带班班长尹万虎带领队员整理好执勤装备后，精神抖擞地走上执勤岗位。当时 The night of February 10, 2002, Qufu City, Shandong Province, the compound quiet and peaceful courtyard. Several office buildings in the setting sun against the more solemn solemn, only the building in front of the night without sleep in the red lantern accompanied the security guard, guarding the safety of the compound. Night 11:30, the city government compound night shift classes with class monitor Yin Wanhu led players to organize good on duty equipment, energetically embarked on duty positions. then