At the beginning of human life, nature is inherently good; people are similar by nature, but their habits differ. If not taught, nature will change. The way of teaching is to value focus. In ancient times, Mencius' mother chose a neighborhood because it was not suitable for her son not to learn. If one does not learn when young, what will happen in old age? Jade must be carved to become a gem; without learning, a person will not know righteousness.