1. When answering this question, you can discuss the popularity of public transportation in China by considering factors such as the extensive and varied public transport network (buses, subways, high-speed trains, etc.), urbanization, and government policies promoting public transport. 2. You can also mention the environmental benefits, cost-effectiveness, and convenience of public transportation, which contribute to its popularity. Additionally, consider discussing the challenges or limitations that might affect its popularity, such as overcrowding during peak hours or in major cities.