Group 1 - The article discusses the evolution of the e-book business model, highlighting the impact of e-commerce platforms and the rise of knowledge payment as a transformative force in the publishing industry [1][2] - The success of the e-book "My Grandmother, Never Internalizing" is attributed to a collaborative effort among the publishing house, WeChat Reading, and the editorial team, which effectively identified market trends and user preferences [3][4] - The e-book achieved significant popularity, with over 400,000 cumulative readings across platforms and sales of over 1.5 million copies of the corresponding paper book [2][8] Group 2 - The article emphasizes the importance of a multi-media approach in promoting both e-books and paper books, leveraging social media and user engagement to enhance visibility and sales [10][11] - The marketing strategy included timely launches and targeted discussions around themes such as "family," "personal growth," and "female empowerment," which resonated with the audience [7][10] - The e-book's success led to a surge in interest for the paper book, resulting in multiple print runs and significant sales growth within a short period [13][15] Group 3 - The collaboration between the editorial team and WeChat Reading allowed for innovative content packaging and marketing strategies, which were crucial for the e-book's breakout success [5][6] - The article highlights the role of digital platforms in extending the lifecycle of books, transforming them from bestsellers to long-term sellers through sustained engagement and promotion [15][16] - The case study illustrates the potential for e-books and paper books to coexist and support each other in a comprehensive publishing ecosystem, maximizing content value and market reach [16]