Yang deficiency and yin deficiency are different. Yin deficiency refers to the changes caused by insufficient yin fluids, which cannot nourish. Yang deficiency is due to the deficiency of yang energy in the organism, diminished function of the internal organs, and the appearance of deficiency cold, as follows: 1. Yin deficiency: some of the manifestations usually seen are low fever, fever in the hands and feet, afternoon hot flashes, night sweats, heart trouble, insomnia, dizziness, tinnitus, red tongue, little moss, and fine pulse. In the treatment of yin deficiency, commonly used drugs include Sha Shen, Mai Dong, Dendrobium, Zhi Bai Di Huang Wan, Liu Wei Di Huang Wan, etc. 2, Yang deficiency: Yang deficiency is prone to the performance of fear of cold, the performance of soreness and weakness of the waist and knees, you can consider increasing sunlight exposure or using drugs such as Radix et Rhizoma, Gui Zhi, Cinnamon, Epimedium, etc. to regulate.