https://d.ifengimg.com/w120_h90_q90/x0.ifengimg.com/house/2020/07/06/8bc4e1bc77186c933e40f9f979a139af.jpg

中国现存的著名古建筑

隧道原来是这样建成的，看完涨知识了-来自凤凰新闻客户端

https://ihouse.ifeng.com/pic/2020_07_01-38909787_0.shtml