Treatment of: 1. Hemorrhages due to external injuries. Dragon's blood (Xuejie) can be taken alone for external use, or it can be combined with Cattail pollen (Puhuang). 2. Chronic ulcers. Dragon's blood (Xuejie) is used with Frankincense (Ruxiang) and Myrrh (Moyao) for external use. 3. Swelling and pain due to blood stagnation caused by external injuries. Dragon's blood (Xuejie) is used with Frankincense (Ruxiang) and Myrrh (Moyao) in the formula Qili San.