Later generations applied this method instead of mudding and expanding its prescriptions, including Huangqi Jianzhong Decoction, Shashen Maidong Decoction, Liujunzi Decoction, Zhigancao Decoction, Buzhong Yiqi Decoction and so on. According to the medicinal properties of the prescription, it can be divided into sweet, cool and warm flavors. For deficiency of both lung and spleen, cold and heat mixed with deficiency and excess, the method of nourishing soil and producing gold should be used, such as Shen Ling Baizhu Powder as the representative; For the deficiency-heat syndrome of lung and stomach yin deficiency, the method of nourishing soil and producing gold is chosen, and the representative prescription is Maimendong Decoction. Zhang Zhongjing's Huangqi Jianzhong decoction is used to treat lung deficiency and cold, which can be described as the beginning of the method of nourishing soil and generating gold.
The coexistence of five elements of primary metal means that there is an orderly relationship among wood, fire, earth, gold and water, which is helpful for development, promotion and promotion. The order of the five elements is: wood fires, fire produces soil, soil produces gold, gold produces water, and aquatic wood. Lung belongs to gold, spleen and stomach belong to soil, and soil produces gold. Its physiological basis is as Su Wen said: "If you drink it into the stomach, it will overflow with essence; if you lose it to the spleen, your temper will disperse essence; if you go up to the lungs, it will pass through the waterway and then lose it to the bladder. The water essence will be distributed in four places, and the five internal organs will be parallel. " Therefore, if spleen disease cannot disperse essence and return to lung, there may be diseases that do not produce gold in soil; If the spleen loses its healthy movement and the qi does not melt into water, it will be wet and accumulate phlegm and accumulate in the lungs. Therefore, "the spleen is the source of phlegm, and the lung is the device for storing phlegm." Clinical manifestations are cough and asthma, excessive phlegm, lung deficiency and spleen deficiency and other lung diseases, so it also shows spleen deficiency, loss of appetite, loose stool, weakness of limbs, even edema and pale tongue coating. Weak pulse, etc.