For yin deficiency and insomnia, you can take Zhi Bai Di Huang Wan and Tian Wang Tonic Heart Dan. Zhi Bai Di Huang Wan contains herbs such as yam, Di Huang, Fu Ling and Cornus officinalis, which can nourish yin and tonify the kidneys, clear heat and fire, and can treat symptoms such as hot flashes, night sweats and soreness of the waist and knees caused by kidney yin deficiency. Tianwang Tonic Heart Pill contains herbs such as vermilion, sour date seed, cypress seed, schisandra and orris, which are suitable for heart yin deficiency and can nourish yin and blood, nourish the heart and calm the mind. Chinese medicine says that insomnia is mostly related to yin deficiency and fire. If there is yin deficiency and fire and yang does not enter yin, it will lead to insomnia and excessive dreaming. In addition to insomnia, clinical symptoms may also include irritable heat in the five hearts, flushing of the face, dry mouth and tongue, and a red tongue with thin white fur.