Analysis: Yin deficiency is generally manifested as heat, night sweats, five heart irritability, easy to fire, irritability, hot hands and feet, waist and knees, dizziness, tinnitus and other conditions. Yang deficiency is generally characterized by coldness, fear of cold and heat, cold limbs in winter, mental fatigue, sleepiness and few words. Yin deficiency can eat some six flavors of dihuang pills, diet can eat lotus seeds and silver ear yam lily walnuts and other foods, Yang deficiency can eat some GuiShuDiHuang pills, diet can eat some leeks mutton dog pork kidney and other foods. Advice: red dates and wolfberries in water is often drink