Zhiyan was born in the second year of the reign of Emperor Wen of Sui.
He was a devotee of the Avatamsaka Sutra and was critical of the philosophy of Xuanzang.
Zhiyan lectured on the Avatamsaka Sutra at Yunhua Temple and was a teacher to the influential Huayan patriarch Fazang.
He died at Qingjing Temple in the first year of Emperor Zhaozong of Tang.
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