Introduction to Shimen: The road up the mountain is completely buried in the grass. The bright red cotinus, dark red thorns, golden wild chrysanthemums, and green jujube trees make the rugged and steep mountain road even more steep. I almost had to use my hands and feet to walk. Just when I was gasping for breath, a group of stone buildings appeared in front of me. Although they were dilapidated, they were still strong. A large amount of information poured into the field of vision. To describe it as dizzying is not an exaggeration. Confucius Cave, Gaoling Academy, Incineration Paper Pool, Stone Archway, and many stone carvings scattered in the mountains and forests are concentrated in this area. Behind this stone gate are the Confucius Cave and the ruins of Gaoling Academy. Mr. Fu Shan once made a wonderful comment on this: "If you read books for a long time, you will find your own pleasure, and you will not be far from Kong Yan."