Kidney yang is the root of yang qi. When kidney yang is deficient, there are two situations: one is the deficiency of kidney yang, which is manifested by the complexion? White, cold in shape, cold in limbs, low in spirits, cold in waist and knees, infertility due to cold in uterus, pale tongue coating, weak pulse, etc. At this time, the method of warming and tonifying the kidney yang can be used, such as Jinkui Shenqi Pill or Yougui Yin. The other is kidney deficiency and water flooding, with chilly limbs, weak urine, obvious body swelling below the waist, abdominal distension, cold waist and knees, or palpitations, shortness of breath, cough, asthma, phlegm, thin and fat tongue with teeth marks, white and slippery fur, and deep pulse. At this time, the method of warming yang and flowing water can be used, such as Zhenwu Decoction or Jisheng Shenqi Pill.
