Kidney deficiency is divided into yang deficiency and yin deficiency, and the two symptoms are regulated in different directions. If you have yang deficiency, you need to recuperate and supplement Yang Qi. Just like a car, it lacks motivation and needs refueling. Yin deficiency is because there is no lubricating oil in auto parts, and human body will feel upset and fever when rubbing, so it is necessary to nourish Yin. It is effective to adjust according to the symptoms, so judge for yourself.