Volume 1. According to the details page of the online literature platform signed by the author of Guanhe Notes, there is only one book in Guanhe Notes, which has been finished. Guan He Notes tells the story that Yang Wan, a scholar, accidentally returned to the time and space where he lived in Deng Ying 600 years ago after studying the historical cases that happened in Deng Ying for more than ten years.