英国作家毛姆曾经这样形容20世纪的重庆：这是一座建在岩石上的城市。2015年，80后书店老板李柯成通过众筹的方法出版了关于20世纪老重庆的照片集——《故城》。该书出版后，许多读者从《故城》里看到了曾经的家园，一时间，书店收到了大量读者的来信，它们有一个共同的主题——重庆记忆。

British writer Maugham once described Chongqing in the 20th century as a city built on rocks. In 2015, Li Kecheng, the boss of the post-80s bookstore, published the photo collection of old Chongqing in the 20th century, the old city, through crowd-funding. After the publication of the book, many readers saw their former home from the old city. At the same time, the bookstore received a large number of letters from readers. They have a common theme - Chongqing memory.