Group 1 - The podcast "Knock Knock World" engages with young listeners by addressing their curiosities and questions about various topics [1][8] - Recent topics include pollen allergies, the role of AI in education, and the significance of the BOA system in sports shoes [2][3] - The podcast also explores the concept of low-altitude economy and its relevance in current events [5][6] Group 2 - The podcast is produced by "Shengdong Huopo" and "Shifen Zhi Yi," and it aims to unlock global news for young audiences [8] - It releases episodes three times a week, with each episode lasting approximately 10 minutes [8] - The first season is available on major audio platforms, with a subscription price of 365 yuan [8]