Confucius said: "Smart people like water, and benevolent people like mountains. Smart people are active, and benevolent people are quiet. Smart people are happy, and benevolent people live long. "

Interpretation: Confucius pointed out that longevity must be based on noble morality and personal ideological cultivation must be strengthened, that is to say, fitness must first strengthen the heart and be a benevolent person first. Because benevolent people have a good mental outlook, they can adjust their mental activities to adapt to the ever-changing objective situation, prevent bad factors from invading the body and mind, delay aging, and live to the limit that human life should reach. The knower is happy with water, which means that the knower is happy, just like running water. The benevolent Leshan is that the benevolent is as lofty and great as a mountain.