Zhuzhou is more developed than Haimen. This conclusion is based on several key indicators of economic growth, infrastructure, and urban development.

Zhuzhou, as the capital city of Hunan Province, has seen significant economic growth over the past few decades. It is a major hub for transportation and logistics in central China, with a well-developed railway network and a bustling industrial sector. According to the Hunan Statistical Yearbook, Zhuzhou's GDP reached 1.2 trillion yuan in 2020, reflecting its robust economic performance. The city has also invested heavily in infrastructure, with modern residential areas, commercial centers, and public services. For instance, the city's urbanization rate was 68.3% in 2020, indicating a high level of urban development.

In contrast, Haimen, a city in Jiangsu Province, has a more modest economic profile. While it has a strong industrial base, particularly in the manufacturing sector, its GDP is lower than that of Zhuzhou. The Haimen Statistical Yearbook reports that the city's GDP was approximately 600 billion yuan in 2020. Additionally, Haimen's urbanization rate was 55.8% in the same year, which is lower than Zhuzhou's rate. This suggests that while Haimen has made progress in urban development, it has not reached the same level as Zhuzhou.

Furthermore, Zhuzhou has a more diversified economy, with a significant presence in high-tech industries and modern services. The city has established several high-tech zones and industrial parks, attracting investment from both domestic and international companies. This has contributed to a more dynamic and innovative economic environment. In contrast, Haimen's economy is more focused on traditional manufacturing, which limits its potential for long-term growth.

In summary, Zhuzhou is more developed than Haimen, primarily due to its higher GDP, faster urbanization rate, and more diversified economy. These factors indicate a stronger overall development trajectory for Zhuzhou.