2. The idea of middle school originated from the Prajna Sutra which was circulated in the early Mahayana period. Long Shu wrote "On the Middle View" to explain the correct thought and practice method of the middle view and put forward the twenty-four views, so as to criticize and break the theories of other schools such as heretics and Hinayana Sect, which are respected by Mahayana Buddhism. Medieval practitioners usually meditate on the themes of these twenty-four views.
3. All the principles of Buddhism are in the concept of righteousness, and the concept of righteousness is the program of Buddhism. The middle school develops the hollow thought in the Mahayana Sutra, and thinks that everything and people's understanding in the world, including Buddhism, is a relative and dependent relationship (karma, karma), a borrowed concept, or a name (pseudonym), and they have no constant entity or self (no self).