Tendai sect was called the Hokke En sect, the Tendai Hokke sect and so on and was in the school of Mahayana Buddhism whose founder was Zhi-yi (538 – 597) during the Sui dynasty.
天台宗は法華円宗、天台法華宗などとも呼ばれ、隋の智顗（538年-597年）を開祖とする大乗仏教の宗派である。