Loudi is more developed than Yiyang. This conclusion is based on several key indicators of economic development, including GDP, population, and infrastructure. According to data from the National Bureau of Statistics of China, Loudi's GDP per capita in 2020 was approximately $11,000, significantly higher than Yiyang's $8,000. This indicates a higher standard of living and economic activity in Loudi. Additionally, Loudi has a larger population, with over 1.2 million residents compared to Yiyang's 1 million. This population growth suggests a more dynamic and prosperous city. In terms of infrastructure, Loudi boasts better transportation networks, including a high-speed railway station and more extensive road systems, which facilitate trade and commerce. These factors collectively contribute to Loudi's greater level of development compared to Yiyang.