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With the continuous iteration of media technology, from the paper media dominated by PGC to the we-media era mixed by UGC and PGC, everyone can choose the right social platform to register an account and express their point of view. At the same time, due to the change in people's behavior of reading, the form of carrying content has also undergone great changes. In the era of scattered attention and fragmented learning, short videos are rapidly popularized with the help of new technologies (Internet, 5G), breaking the island phenomenon of information and knowledge, and lowering the threshold of content sharing, so that netizens who know something gradually have the right of discourse narrative and expression, and become knowledge internet celebrities born due to new media after traditional intellectuals. Knowledge internet celebrities attract traffic and accumulate popularity by sharing in-depth, interesting, and valuable content, and realize economic benefits through online courses, brand marketing, and live streaming to achieve a commercial loop. From 2020 to 2023, the world was affected by the epidemic, and people stayed at home for a long time, it stimulated the development of the online economy, such as e-commerce, games, online courses, office collaboration software, and so on. Digital teaching has become the infrastructure of major colleges and universities which has catalyzed a large number of teachers to enter new media to share their precious vi knowledge with users across the country in need. They can optimize and adjust the video content promptly according to the feedback provided by users with different educational backgrounds in different regions, this is to teach students by their aptitude. Compared with other types of internet celebrities, the knowledge internet celebrities, with their in-depth content, professional analytical perspective, and humorous expression, has opened a road for intellectuals to understand traffic, and gradually develop into a KOL with the right to speak in the field of brand marketing in all walks of life, which has a profound impact on consumer behavior. In this context, this study takes knowledge influencers as the research object, studies and analyzes the factors that influence consumers' purchasing behaviors in the context of short video marketing, and explores the marketing characteristics of knowledge internet celebrities’ short videos. Knowledge internet celebrities is the modern new clothing of traditional intellectuals. As a KOL with professional knowledge and close source information in the marketing market, in the process of marketing persuasion for consumers, what specific image characteristics, communication content, expression, and persuasion situation can have an impact on consumers and achieve a higher purchase conversion rate? Given this, to explore consumer psychology in detail, this study uses the research method of grounded theory and semi-structured interviews to obtain a large amount of original data and then analyze it by three-level program coding. By comparing the logical relations among various categories, it establishes the matching structural relationship and preliminary theoretical model around the storyline of "consumer purchasing behavior". After the theoretical saturation test, combined with the interview data, this paper analyzes vii the influencing factors and paths of knowledge internet celebrities on consumer purchasing behavior. A large amount of public data shows that the characteristics of knowledge influencers as appearance, the perspective of explaining the content, the way of expressing the content, and the construction of the use scenario are all important factors that affect the purchasing behavior of consumers. Among them, the characteristics of knowledge influencers, the perspective of explaining content, and the way of expressing content can also promote consumers' purchasing behavior by affecting consumers' perceptions. Consumers' perception plays an intermediary role between knowledge influencers' characteristics, the perspective of explaining content, the way of expressing content, and consumers' purchasing behavior. Finally, this paper expounds the marketing strategies for the sustainable development of knowledge internet celebrities from three aspects, aiming at providing feasible suggestions for the short video marketing strategy of knowledge internet celebrities, providing rich and diversified knowledge talents for new media, opening the visibility of netizen cognition, and providing reference significance for the economic development of culture and knowledge areas of our country. Key words: Knowledge internet celebrities; Consumption behavior; Grounded theory |