Yellow essence is a herb commonly used to nourish Yin, it is mainly used to nourish spleen Yin, nourish lung Yin, nourish kidney Yin, so it will be beneficial to spleen Yin deficiency accompanied by spleen Qi deficiency, the lung Yin deficiency caused by colds, that is, Yin deficiency external sensation is also commonly used yellow essence, kidney meridian deficiency caused by lumbar and knee weakness, lower limb weakness, including impotence and premature ejaculation, yellow essence also has a certain role in nourishing the kidney. Although maca is not an herbal medicine, but it has the role of kidney Yang, and has a certain therapeutic effect on sexual hypogonadism. Maca plus yellow essence actually has some benefits for the yin and yang of kidney energy.