In the mathematics that Pepe loves, Pepe's father's children can solve a quadratic equation group at the age of four years and two months. At first glance, they subconsciously think that their parents are over-trained. There is no denying that Pepe's father is really excellent. After all, four-year-olds can do junior high school problems. He does have many unique ways to communicate with children and help them improve their mathematics cognition. But it is easy to guide many parents to force their children to become so excellent, which will have the opposite effect.