A detailed analysis of the so-called life can be understood as human life, survival and life; In addition, it can also be understood as the maintenance of the body, the recuperation of internal functions, and the nourishment of nutrients. In short, the so-called health preservation is the basic meaning of better maintaining life and prolonging life. Maintenance of patients with psoriasis is also very important, and many of them can be used as health food, such as lotus root:

The utility of lotus root is also considerable. In Compendium of Materia Medica, lotus root is called "spiritual root", which is sweet in taste, cold in nature and non-toxic, and is regarded as a product for removing blood stasis and promoting fluid production. According to legend, Xiaozong suffered from dysentery in the Southern Song Dynasty and was cured with fresh lotus root juice and hot wine.