Among the two major schools of Taoism, Quanzhen abides by the old adage and forbids cruelty. Orthodox Taoists can eat meat, but they eat three clean meats, that is, they don't kill unless they see it, smell it, or kill it.

In addition, Taoism attaches importance to health preservation, and believes that it is necessary to maintain the balance of yin and yang in the human body and adapt the rhythm of the human body to the natural rhythm of the sun and the moon. Therefore, the aftercare of the human body should also be carried out in accordance with the laws of the sun and the moon hidden in spring, summer, autumn and winter.

For example, in spring, the taste of diet should be reduced to sweet and sour to nourish temper. In summer, heart fire is strong, so it is advisable to reduce bitterness and increase bitterness to nourish lung qi. Autumn is cold, and the taste of diet should be pungent and sour to nourish liver qi. The taste of winter diet should be reduced to salty and bitter to nourish the heart.