Introduction to Nantianmen: Nantianmen is a two-story loft-style building. Climbing up to the viewing platform on the second floor, you can not only enjoy the beautiful scenery of the array of strange peaks and towering peaks of Lotus Mountain, but also overlook Xintai City and the surrounding area. To the east are the vast Qingyun Lake and the Qingyun Mountain with its solitary peaks. Kong Zhenxuan, a litterateur of the Qing Dynasty, described it in "A Journey to Xinfu Mountain": "Zhi Tianmen suddenly opened up to a strange place, and I realized that there is great beauty within, and there are many twists and turns in the mountains."