2025年四线城市排名榜单：开封第4，包头第11，淮南第16

Core Insights - The "New First-Tier Cities Research Institute" released the "City Charm Rankings" for 2025, highlighting the vibrant development of 90 fourth-tier cities in China [1][3] - Kaifeng ranked fourth among fourth-tier cities, showcasing its strong revival as an ancient capital, while Baotou and Huainan ranked eleventh and sixteenth respectively [1][3] Group 1: City Rankings and Characteristics - Kaifeng's ranking reflects its transformation of historical cultural heritage into new development momentum, supported by tourism and urban integration strategies [3][5] - Baotou, as an industrial center, is undergoing a transformation towards high-value and green industries, with a focus on renewable energy and cross-border trade [7][9] - Huainan is recognized for its clear development path, transitioning from a resource-based economy to include new energy and high-end manufacturing [9][11] Group 2: Development Trends in Fourth-Tier Cities - Fourth-tier cities are seen as the foundational layer of China's urban system, with unique resources being leveraged for development [11][13] - Many cities are actively integrating into core urban areas, enhancing their roles as incubators for local industries and stabilizing employment [13][15] - The diversity and resilience of these cities are crucial for regional coordination and the well-being of millions, indicating their importance in the broader urbanization process [15]