Common clinical manifestations of yin deficiency include hot flashes, night sweats, irritability, red tongue with little moss, fine pulse, insomnia, forgetfulness, tinnitus and a series of other symptoms, including heart yin deficiency, liver yin deficiency, spleen yin deficiency, kidney yin deficiency and so on. Yin deficiency is often accompanied by a high level of fire, which is referred to as yin deficiency and high level of fire. Patients with yin deficiency can consider using medicines such as sasanqua, maitong, dendrobium, Zhimu, cypress, lily of the valley, etc., or take Chinese medicines, such as Zhibai Di Huang Pill and Zuo Gui Pill, etc., for treatment.