The yellow, thick and cracked tongue coating is mostly due to internal heat injuring the yin and fluid or accompanied by dampness-heat and phlegm-dampness, and the main types of symptoms are yin-deficiency internal heat or spleen-deficiency dampness-heat. Yin deficiency internal heat is caused by the depletion of yin fluid in the body, and is mainly manifested by afternoon hot flashes (a burst of fever), night sweating (abnormal sweating after going to sleep, but sweating stops after waking up), and heat in the heart of the hands and feet, which can be treated with medicines such as Sasanqua Maitong Soup and Shengmanshan. Spleen deficiency with dampness-heat mainly manifests as loss of appetite, nausea and vomiting, diarrhea, body fatness and other manifestations, which can be treated with Artemisia Incarnata Soup. If you have any related symptoms, you should consult a doctor in time, under the guidance of a professional physician to identify and treat, not blindly self-medication.