Group 1 - The concept of "leaving blank" in urban development reflects a shift in thinking and methodology, allowing cities to reserve space for future growth and attract quality projects and emerging industries [1][2] - Major cities like Beijing, Shanghai, and Qingdao are designating "blank" land and implementing management measures, indicating a change in development philosophy [1] - The construction of Xiong'an New Area emphasizes ecological value and long-term planning, with a current forest coverage rate of 35% and over 20 million trees planted [1] Group 2 - The strategy for the Yangtze River Economic Belt focuses on ecological protection rather than extensive development, leading to improved water quality and biodiversity [2] - Qinghai's Xining Ganhe Industrial Park is eliminating low-efficiency and high-emission enterprises to seize opportunities in new materials and renewable energy, showcasing a commitment to ecological safety [2] - The approach to development involves a strategic mindset that balances priorities and boundaries, ensuring that new technologies and industries are regulated while allowing for growth [2]