Guoqing Temple on the mountain is the headquarters of Tiantai Buddhism and also a tourist destination. Tiantai, named for the mountain, focuses on the Lotus Sutra. The most prominent teacher of that school, Zhiyi, was based at Guoqing Temple. Over many years it has been an important destination for pilgrims, especially from Japan. The mountain was visited by Saichō in 805 who went on to found the related Japanese Buddhist school, Tendai.