Group 1 - The article discusses the challenges faced by people from southern China, particularly in relation to climate and lifestyle [3][12][20] - It highlights the unique cultural aspects of southern cities, including food and local customs, emphasizing the importance of quick eating habits in humid conditions [16][41][49] - The article encourages readers to explore various cities and their distinctive features, promoting a deeper understanding of regional differences [5][29][33] Group 2 - The article mentions specific cities like Wuhan and Fuzhou, showcasing their culinary traditions and local quirks [16][45][46] - It emphasizes the significance of local dialects and the rich cultural heritage found in southern provinces [5][39][40] - The content invites readers to engage with the "City Roaming Plan" for a more immersive experience of different urban environments [9][59][60]