Li Tongxuan (李通玄, Korean: Yi T’onghyŏn, Japanese: Ri Tsūgen) (635–730) was a lay Chinese Buddhist scholar and meditation master of the Huayan school.
[2][3] In his commentary to the Huayan sutra, Li argues that all sentient beings already have the same qualities possessed by a Buddha and thus, he sees the Huayan teaching as a sudden teaching which reveals the Buddhahood that is immanent in all beings.
[4][1] Because reality is all the one single dharmadhatu, there is no duality between Buddhas and living beings, no dualism between buddhahood and samsara, awakening and ignorance, or sacred and secular.
Li developed a unique meditative practice called "the contemplation of Buddhalight" (foguang guan) based on the 9th chapter of the Avatamsaka sutra.
[6] His work was influential on numerous later Buddhist figures like Jinul, Myoe and Dahui Zonggao (1089–1163).