北京朝阳区一处社区的街道边，有一座小房子存在了几十年，功能是人防出口。几经变革，这个人防已经废弃，物业申请了人防平时使用证，将其转做了商铺。

By the street of a community in Chaoyang district,Beijing,a small house has been stood for decades as civil air defense exit.Many years passing by,the property applied ordinary use certificate and turned it into a shop.

▲店面原状

▲地下通道原状