"Young and impartial" means doing things very quickly when you are young, and doing what you want immediately without hesitation. When he was a child, everyone was so dedicated. For example, when a child sees a flower, he will catch it at once, no matter whether it is prickly or poisonous, no matter how bumpy the road is. But when we grow up, we tend to look forward and backward, think about it, hesitate and swing from side to side. Consider too many problems, stop "favoritism", deviate from the truth intentionally or unintentionally, concentrate on one thing, troubles gradually arise, and health is damaged.

Therefore, the life of the Yellow Emperor described in Huangdi Neijing is actually the life of each of us, but as we grow up, we gradually forget, lose our spirit, speech, eccentricity, sensitivity and childlike innocence. Through practice, let our aging life return to childhood and the baby's "sensitivity", "extreme" and "spirit", which is health preservation.