Walking into the waste city Zhiziluo can see the most magnificent building in the city, the county library once "Octagon Building". The walls around the octagonal building still have the imprint of that era, and the moment you see these slogans, it makes people feel like they are back to that fiery era. Standing outside for a long time, imagining the history of the city, now dusted in this library. Time is solidified here, so it is also known as the "city of memory"