Jinghe county, Xinjiang. Cajanus cajan leaves, the name of traditional Chinese medicine, are the stems and leaves of cajanus cajan in Leguminosae, which have the function of detumescence. Stems and leaves have a large number of acquisitions in Jinghe County, Xinjiang, and they are a merchant named Panhui Medicinal Materials Acquisition Company. The company also operates the acquisition business of Fritillaria, Saussurea involucrata, Arnebia euchroma and Lycium barbarum.