Zhiyi (; Japanese: Chigi) (538–597) is traditionally listed as the fourth patriarch, but actually is the founder of the Tiantai tradition of Buddhism in China. Zhiyi is famous for being the first in the history of Chinese Buddhism to elaborate a complete, critical and systematic classification of the Buddhist teachings, in order to explain the seemingly contradictory doctrines of Buddhism. He is also regarded as the first major figure to make a significant break from the Indian tradition,… (More on Zhi-yi)