The turtle shell is the Chinese medicine tortoise shell. Its nature and flavor are sweet, salty, and cold. It has the functions of nourishing yin and replenishing yang, nourishing the kidneys and bones, and nourishing the blood and heart. It can be used for yin deficiency and yang hyperactivity or heat disease injuries, yin deficiency and wind movement, yin deficiency and fever, weak waist and feet caused by kidney deficiency, weak muscles and bones, misaligned fontanelles in children, heart deficiency, palpitations, insomnia, forgetfulness, and collapse of yin deficiency and blood heat. Syndrome such as leakage and menorrhagia.