It is said on the Internet that clearance is a bad teacher, right?

It must be! Sakyamuni Buddha said 84,000 Dharmas, and when he cleared the room, he denied all other Buddhist scriptures! He also said the end of the world many times, saying that Sakyamuni Buddha didn't know the benefits of garlic ... too much, and those who really had a little Buddhist foundation wouldn't go online! He's just talking nonsense, and his preface is irrelevant.