1. Different brand names: Zuyitang and Shizhen Shi Jia have different brand names. Zuyitang's trademark is Zuyitang, and Shizhen Shi Jia's trademark is Shizhen Shi Jia. Both trademarks are related to traditional Chinese medicine, and their names are different, so they can be distinguished according to their names.

2. Different trademark registrants: Zuyitang and Shizhen Shi Jia have different trademark registrants. The registered trademark of Zuyitang is "Beijing Zuyitang Chinese Medicine Pharmaceutical Co., Ltd." and the registered trademark of Shizhen Shi Jia is "Beijing Shizhen Chinese Medicine Technology Co., Ltd.".