석가모니 부처님께서 일생동안 펴신 설법을 내용과 형식에 따라 네 종류로 비판 분류한 것. 거기에는 화엄사교 (華嚴四敎)를 비롯하여 여러 가지가 있다

The four teachings: This is to classify the lifelong Buddha's teaching into four categories according to their content and form. There are five such cases including four teachings of the Tiantai Sect.