Albizia, particularly Albizia julibrissin (also known as "Silk Tree" or "He Huan Pi" in Traditional Chinese Medicine), has a long history of use in traditional medicine for calming the mind and alleviating symptoms related to emotional disturbance, such as excessive anger, irritability, and anxiety. In Chinese herbal medicine, Albizia bark and flowers are classified as "spirit-calming" herbs. They are often prescribed for conditions described as "constraint of the heart qi," which can manifest as emotional distress, including anger and agitation.

The traditional rationale is based on centuries of anecdotal use and inclusion in classic Chinese medical texts, where Albizia is said to "relieve constraint," "invigorate the blood," and "harmonize the emotions." While there is a solid and well-documented tradition for using Albizia in this way, direct scientific evidence supporting its efficacy for specifically reducing anger is limited. Some modern studies have explored Albizia’s potential anxiolytic and antidepressant effects in animal models, suggesting possible calming properties, but these do not specifically address anger in humans.

Overall, the use of Albizia for excessive anger is justified by traditional use rather than robust clinical evidence. The evidence rating is moderate (2/5) because of the strong traditional use but lack of substantial scientific validation for this specific indication.