Entering Hanguguan, encountering a middle school to hold a performance, students are energetic. I think that when I passed through Hanguguan, I was entangled by Guan Lingxi, and I had to write a 5,000-word text. As a result, I was regarded as the "Moral Sutra" by Taoism as a classic, and also regarded Hanguguan as the source of Taoism.