I Have Been Underground in Chang'an for Fifty Years

Lu Chen is a 28-year-old coppersmith who lives in Huaili Town. One rainy night, someone came to deliver a bronze fragment. Four words are engraved on the tablet: Jingshan Approval. Jingshan is his grandfather. He disappeared in 1972 and has never been seen alive or dead. He rummaged through the belongings left by his grandfather for three days and found a place name: Chang'an. A clue was found: Ziwu River. He felt along the river and found a city. That city is not a mausoleum. There are streets, shops, and lights in the city. There are people living in the city. Grandfather lives in it. I went in in 1972 and stayed there for 50 years and never came out. It's not that I can't come out, it's that I don't want to come out. That city was used to contain things. It's about people who shouldn't be remembered in history books, and things that shouldn't exist. Grandfather is guarding a door. The door had been guarded for fifty years. When he left, the door opened. He brought his grandfather out. Now he had to make a choice: let his grandfather stay outside the door, or go in and guard the door himself.