Hello! According to years of research experience, American psychologist Boom believes that "about 50% of the intelligence of 100 measured at the age of 17 occurs between the ages of 4, 30% between the ages of 4 and 8, and 20% between the ages of 8 and 17". Many modern psychologists believe that early childhood development is of great significance in a person's life. For more than 100 years, scientists have conducted many interesting and beneficial studies on normal children (super long or mentally retarded), which proved that the first two years of life are the basic period of life development. During this period, if children's physical and psychological needs are not properly met, or because of improper handling, the development of many behaviors and abilities may be delayed, or abnormal, or even irretrievably affected. Therefore, early education is very beneficial and important.