Suffering from filth or bad reputation can also be used as a way to nourish Xiu De. The ancients believed that to cultivate the mind, we should seize the opportunity to "exercise the mind with the help of things." Because "the heart can't be refined, the desire can't be removed", and the purpose of health preservation can't be achieved without removing the selfish desires in the heart. People who keep in good health can exercise their spiritual strength by humiliating and stigmatizing things. The mentality must be stable in order to maintain the balance of psychological activities. If the mind is uncertain, it will produce lust and ecstasy And "insult and stigma" is a good place to train your mind. A person does not shy away from stigma, but can calmly reflect on his own shortcomings in order to correct them in time. Moreover, stigma makes the mind not only biased towards the good side. If you are biased towards the good side, it will also cause psychological paranoia, which will lead to the mind being too attached to itself and rejecting those reference bodies, which also excludes the information that the human body could have obtained; This rejection is dangerous, which wears away human's keen sense of judging information. In a sense, life is always eager for new information, and even the best things will become old and become things that life rejects, and new contradictions will appear.