1. Popularization of e-commerce platforms: With the development of the Internet, e-commerce platforms such as Taobao, Tmall, Amazon and JD.COM are widely spread in China and even around the world. These platforms provide a series of services, such as online shopping, payment, logistics and distribution, so that consumers can easily purchase various commodities, including educational videos.
2. The popularity of Ni's teaching videos: As a famous master of traditional Chinese medicine, Ni's teaching videos have high popularity and influence in the field of traditional Chinese medicine. Therefore, his teaching videos have also received extensive attention and purchase on the e-commerce platform.