老北京灰蒙蒙的胡同地带，真可以 说是鱼龙混杂—一既有骆驼祥子 一类贩夫走卒居住的破旧院落，也不乏公子王孙、达官贵人的豪宅。一路走过该怎么区别呢？主要是看它的门楼。因为刻意保护住户隐私的四合院是封闭性的，一旦大门紧锁则滴水不漏。即使宅门是虚掩或敞开的，你也很 Old Beijing gray alley, it can be said that quite a mixed bag - both a camel Xiong Zi patriarchs living in a dilapidated courtyard, there is no lack of princes and grandchildren, dignitaries mansion. How to make the difference Mainly look at its gatehouse. Because the courtyard that deliberately protects the privacy of the occupants is closed, once the door is locked, the water leaks. Even if the house is empty or open, you too