If the potential of the right brain is not developed and trained, it will gradually disappear in the process of growth. Professor Makoto Qitian, a Japanese education expert, and Dr. Du Man, an American education expert, have shown through a lot of practical teaching experience that the human brain has completed 60% development before the age of 3 and 90% development before the age of 6. Before the age of 3, the right brain was developed, but the adult right brain was only 3 years old 1/4. Therefore, 0-6 years old is the golden age to develop the right brain.