Library

This city is like a sleeping giant, with unknown underground rivers flowing within its reinforced concrete skeleton. During the day, people hurriedly rode shared bicycles on the streets, the subway was crowded with faces looking down at their mobile phones, and the glass curtain walls of office buildings reflected the dazzling sunlight - everything looked the same as any modern city. But if you walk through the alleys of the old city late at night, you will occasionally encounter a faint blue light seeping out of the cracks in the corners of the wall, as if something is breathing in the cracks in the concrete. The light was so faint that ordinary people would only regard it as the reflection of street lights, or simply attribute it to the dazzling effect after staying up late. But those who really know the inside story understand that it is the "source essence" that is leaking, and that the skin of another layer of truth in this world is peeling off.