In fact, the Sanjiu Ganmaoling granule you bought should be Shenzhen Sanjiu, which produces Piyanping. Sanjiu is a large group company with many pharmaceutical companies, including Shenzhen Sanjiu and Beijing Sanjiu, as well as Kunming Sanjiu, Deyang Sanjiu and Anshan Sanjiu. Shenzhen Sanjiu was its earliest manufacturer and later merged with other pharmaceutical companies. Therefore, although they are all Sanjiu brands, the varieties produced by Sanjiu Pharmaceutical Company are not all good.
This factory in Beijing Sanjiu is still good, but the curative effect you said is not good, which may be a variety problem. Wind-cold-cold granule only treats wind-cold colds.