Yin deficiency can be categorized into kidney yin deficiency, lung yin deficiency, heart yin deficiency and liver yin deficiency. Different types of symptoms require different proprietary Chinese medicines, e.g., for kidney yin deficiency, one can take Six-flavored Di Huang Pills. Kidney yin deficiency can be seen in dizziness, tinnitus, lumbar and knee pain (the feeling of lumbar and knee pain and weakness) and pain, loose teeth, etc., can be taken under the guidance of the doctor, such as six flavors of Di Huang Pill, Zuo Gui Wan, Zhi Bai Di Huang Pill and so on. Lung Yin deficiency can be seen in dry cough without phlegm, or phlegm is small and sticky, not easy to spit out, etc., can be prescribed to take Nourishing Yin and Clearing the Lungs (by nourishing the fluid in the lungs to get rid of lung-heat) Pills. Liver yin deficiency can be seen in headache, dizziness, dry eyes, fear of light, blurred vision, irritability, etc., can take Qi Ju Di Huang Wan. Heart yin deficiency can be seen in heartburn, palpitations (rapid heartbeat, often accompanied by panic), insomnia, dreamy, dry mouth and throat, emaciation, etc., can follow the doctor’s advice to take the Heavenly King’s Heart Tonic Dan. Patients are advised to consult a doctor and follow the doctor’s instructions for medication.