Introduction to the sutra exposition platform: The sutra exposition platform is the place where Lao Tzu is said to have taught the Tao Te Ching. The sutra exposition platform preserves many ancient stele stones, including the "Tang Zong Sheng Guan Ji Stele" written by Ouyang Xun of the Tang Dynasty, and Mi Fu's running script of the Song Dynasty. "The No. 1 Mountain in the World", Su Dongpo's running script "Inscription on Youlou Guantai", Yuan Zhao Meng Li's "Shangshanchi" stone tablet, etc., are of high value.