Introduction to the mountain gate: As soon as you enter the mountain gate of Tianning Temple, you can see that there is a horizontal plaque "First Mountain" written by Mi Fu, a master of calligraphy in the Song Dynasty, hanging under the eaves of the mountain gate. The handwriting is vigorous and powerful, and there is a couplet written on it. "The Kanxiang is the highest, the mountain represents the degree of yin and yang; the Buddha's vehicle is the most wonderful, and the four truths eliminate the doubts of birth and death." This is a high-level summary of Guashan's scenic spots and historic sites.