中国政府花费8年时间、耗资数亿,构造了北京奥运会的安保网:比赛场馆周界圈、奥运村周界圈、大北京保卫圈三个层次的防控圈。在场馆中,有来自高科技设备和“人海战术”的保卫;奥运场馆周边3公里内,均被划入周界控制中;而在北京全城,因摄像头高密度覆盖,5年内银行没有发生过大的事故 The Chinese government spent eight years at a cost of hundreds of millions of dollars to construct a security network for the Beijing Olympic Games: a three-level prevention and control ring at the periphery of the Olympic venues and the Beijing Olympic Games. In the venues, there are high-tech equipment and “people and sea tactics ” security; the Olympic venues within 3 km, are included in the perimeter control; and in Beijing throughout the city, due to high-density camera coverage within 5 years The bank did not have a big accident