Nutritional efficacy: This soup is often used to treat deficiency of both heart and blood caused by overthinking and straining the spleen. If the elderly are emaciated, often tired and weak, and have low fever or five upset, you can try to use longan with ginseng, medlar and black-bone chicken, which can tonify both blood and yin, and soothe the nerves. However, those with stagnation of fire, stagnation of phlegm and qi, and full dampness in the body are fever, cough, excessive phlegm, abdominal distension and constipation.