Group 1 - The podcast "Knock Knock World" has released its 20th episode, continuing to explore various topics each week [1] - The podcast is produced by "Sound Alive" and "One Tenth," aimed at unlocking global news for young audiences [5] - The first season of "Knock Knock World" is available on major audio platforms, with a subscription price of 365 yuan, and offers three free trial episodes [5] Group 2 - The article discusses the rapid growth of snack stores in China, with the number of such stores expected to increase from 2,500 at the end of 2021 to 45,000 this year [3] - It raises questions about how these snack stores manage to keep prices low and whether they can still be profitable [3] - Many snack stores are beginning to sell daily necessities, indicating a shift in their business model [3]