Not a liar. They are all certified, so they are not liars. Teacher Li Bo, a teacher of Li Bo Yang Ming's mind-wandering education class, a high school math teacher, has nearly 2 million fans in Tik Tok. They are all precision treasure parents' groups. The contents of the lectures are all children's education issues that these groups care about, and they are good at using vivid language and expressions to make everyone understand abstract truth.