Which Xingjiu brand is genuine?

Beijing tongrentang. Beijing Tongrentang, a well-known time-honored brand in the field of traditional Chinese medicine, was founded in 1669 (the eighth year of Emperor Kangxi of Qing Dynasty), and has been devoted to imperial doctors since 1723, and has experienced 188 eight emperors. In the course of more than 300 years, Tongrentang people have always adhered to the old adage that "although the processing is complicated, they will not dare to save labor, and although the taste is expensive, they will not dare to cut materials", and they have established the self-discipline consciousness of "harmony without seeing, knowing what is wrong".