It won't be late. Children need to be educated at this age, and children can't understand it too early; It's too late, and the child is difficult to discipline. 3, 4-year-old children's brains have developed almost, educating his children can understand more or less, even if they can't fully understand, they will be impressed. Education must start from this age, and children can be better trained if they don't get up early or get up late.