Group 1: Economic Landscape of the "Trillion-Level" Provinces - In 2025, the economic landscape of China's "first-tier" provinces is defined by Guangdong (68,725.4 billion), Jiangsu (66,967.8 billion), Shandong (50,046 billion), and Zhejiang (45,004 billion), collectively accounting for over 60% of the national GDP [1] - The internal differentiation within the "trillion-level" provinces is significant, with Zhejiang and Shandong leading in growth rates at 6%, followed by Jiangsu at 5.9%, and Guangdong at 4.1%, indicating a transition from scale expansion to quality improvement in Guangdong [1] Group 2: Economic Drivers of Each Province - Guangdong's economy is driven by a service-oriented model, with the tertiary sector accounting for 65.3% of its GDP in Q1 2025, and modern services like digital services and fintech growing over 8% [4] - Jiangsu showcases its manufacturing strength with an 8.2% growth in industrial output in Q1 2025, supported by a balanced regional development strategy [5] - Shandong's industrial growth is highlighted by an 8.2% increase in industrial output, with significant contributions from new energy sectors, reflecting a successful transition of old and new economic drivers [6] - Zhejiang's economy is characterized by a strong private sector, with an 8.9% growth in industrial output in Q1 2025, driven by innovation in industries like drones and robotics [8] Group 3: Development Models and Regional Coordination - Jiangsu's approach to regional balance through coastal development has led to GDP growth rates exceeding 7% in coastal cities, providing a model for coordinated regional development [9] - Zhejiang's governance model emphasizes the role of private enterprises in policy-making, resulting in a 10.5% increase in private investment, particularly in the digital economy [9] - Shandong's transformation strategy includes policies for green upgrades in traditional industries, with a 2.3 percentage point decrease in high-energy-consuming industries' output share [11] Group 4: Challenges and Future Directions - Guangdong faces challenges in addressing the disparity in GDP per capita between the Pearl River Delta and other regions, necessitating the diffusion of innovation resources [12] - Jiangsu's underperformance in marine economy, with only 7.3% of GDP from marine production, highlights the need for enhanced coastal industry integration [12] - Shandong's reliance on high-energy industries, contributing 30% to industrial output, requires innovation to enhance value-added production [12] - Zhejiang must overcome limitations in its private sector, particularly in high-tech fields, to foster a more competitive industrial ecosystem [12] Group 5: Overall Value of the "Trillion-Level" Provinces - The collective economic strategies of Guangdong, Jiangsu, Shandong, and Zhejiang illustrate diverse pathways to high-quality development, emphasizing the balance between scale and quality, government and market, and efficiency and equity [15] - The success of these provinces is attributed to their adaptive economic ecosystems and social structures, which align with their respective resource endowments and governance models [15]