Grinding yam into powder, sieving, adding appropriate amount of water, and stirring evenly.

Wufushan powder refers to yam powder, which has the effects of strengthening spleen and nourishing stomach, promoting fluid production and benefiting lung, tonifying kidney and astringent essence after eating for one year. Yam powder is made by grinding yam, which is sweet in taste and flat in nature, and belongs to spleen, lung and kidney meridians. Has the effects of nourishing kidney, arresting spermatorrhea, invigorating spleen, relieving diarrhea and stopping leukorrhagia. It is mainly used for treating diarrhea due to spleen deficiency, anorexia, loose stool's disease, chronic diarrhea, nocturnal emission due to kidney deficiency, increased leucorrhea and body heat.