Liujia Shenbing

A modern illusionist traveled through the Northern Song Dynasty and became Guo Jing, the eternal magic stick who "used the Liujia magic weapon to mislead the country". He knew that he was the key to the country's downfall and had no way to retreat. He could only play this scam to the extreme, just to save one more person in the blank space of the history books. History has remembered his infamy, and no one knows who he saved.