久居城市，漫步街头，但见户户楼房人家，莫不掩映在铁门钢栅之中。走亲访友，恍如通过层层封锁线，常须穿越重重铁门。戒备之森严如临大敌。不仅是门，许多人家的窗户、阳台也都装上了铁护栏，俨然一个铁笼子。据说，有些城镇公安机关专门发出通知，要求新建居民楼一律要... A long time in the city, wandering the streets, but see each other in the apartment, among the steel grating. Visiting friends and relatives, as if by layers of cordon, often have to cross the heavy iron gate. Preparedness guard the enemy. Not only the door, many people’s windows, balconies are also fitted with iron fence, just like an iron cage. It is said that some urban public security organs issued a special circular calling for all new residential buildings to be ...