Huayan school
The philosophy of the Huayan school also had an influence on Chinese Chan. One example is the Huayan doctrine of the interpenetration of phenomena, which also makes use of native Chinese philosophical concepts such as principle ("li") and phenomena ("shi"). The Huayan theory of the Fourfold Dharmadhatu also influenced the Five Ranks of Dongshan Liangjie (806–869), the founder of the Caodong Chan lineage.