After the disappearance of Buddhism from India, these philosophical traditions continued to develop in the Tibetan Buddhist, East Asian Buddhist, and Theravada Buddhist traditions. In Tibet, the Indian tradition continued to be developed under the work of thinkers like Sakya Pandita, Tsongkhapa, and Ju Mipham. In China, new developments were led by thinkers such as Xuangzang who authored new works on Yogacara, Zhiyi who founded the Tiantai school and developed a new theory of Madhyamaka and Guifeng Zongmi who wrote on Huayan and Zen.