Wugu Zen originated from vegetarian food in temples in the Tang Dynasty. Zen masters first processed six kinds of grains with nuts, which is a nutritional method to make their minds clear. Because of the love of Wu Zetian, who once entered the palace as a nun, it became a palace delicacy, and then spread to Japan and South Korea as a beautiful nourishing recipe in China. Since then, it has become a kind of advanced health care product that makes people physically and mentally healthy, and it is popular in Japan and South Korea.

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Chinese medicine has always regarded whole grains as the basis of diet. As early as in the health bible Su Wen of Huangdi Neijing, the principle of "five grains are nourishing, five fruits are helping, five livestock are benefiting, five dishes are filling, and the smell is consistent, so as to supplement the essence" was put forward. At the same time, it also explained the dominant position of five grains in diet, that is, "five grains" is the foundation of diet health, and Chinese medicine is known as "five grains nourish five internal organs". According to Zhou Li, the palace diet at that time,