I Manage Files in the Gray Rain Era

There is a lot wrong with this world. A street that doesn't exist. Someone no one remembers. A time omitted from all history books. There are also some things that clearly exist but cannot be recorded. Jiangchuan is a programmer, and his job is to find and fix errors. Until one day, he discovered a piece of information that could not be deleted in the city database: [Abnormal record: Jiangchuan. [Status: Confirmed to exist. [Note: Should not be discovered by the world. From that day on, he entered a world inaccessible to ordinary people. Someone logs the exception. Someone is hiding the anomaly. Someone creates an anomaly. What Jiang Chuan wants to do is to find the biggest mistake in the world. ——Why has mankind forgotten part of its history?