Longan is a hot fruit, and eating fresh longan is easy to make people get angry. In order to avoid getting angry, longan can be made into dried longan, and the heat will gradually disappear, leaving only sucrose and glucose that can be directly absorbed by the human body. Longan can also be cooked with drugs such as chrysanthemum and American ginseng to nourish yin and clear heat, which can not only enrich blood but also avoid getting angry.