The most prosperous and expensive area in Shanghai is Pudong New Area. This region has experienced rapid development over the past few decades, transforming it into a global financial hub and a symbol of modern China. Pudong is home to the iconic Shanghai Tower, the second-tallest building in the world, and the Oriental Pearl Tower, a popular tourist attraction. The area boasts a high concentration of luxury hotels, upscale residential complexes, and high-end shopping centers, making it a prime location for the wealthy and affluent.

Data from the Shanghai Municipal Bureau of Statistics indicates that Pudong New Area has the highest per capita GDP among all districts in Shanghai. In 2020, the per capita GDP in Pudong reached 227,000 yuan, significantly higher than the city's average of 191,000 yuan. This economic prosperity is a result of the area's strategic focus on finance, technology, and trade. Pudong is home to numerous multinational corporations, financial institutions, and research centers, contributing to its status as a global business center.

The high cost of living in Pudong is also reflected in its real estate market. According to a report by the Shanghai Real Estate Research Institute, the average price per square meter in Pudong reached 123,000 yuan in 2020, making it the most expensive district in Shanghai. This high price is driven by the limited land supply in the area and the demand for luxury housing among the city's elite. The development of high-end residential projects, such as the Shanghai World Financial Center and the Shanghai Tower, has further contributed to the area's reputation as a place of affluence.

Moreover, Pudong's transportation infrastructure is another factor contributing to its prosperity. The area is well-connected by the Shanghai Maglev Train, which links it to Shanghai Hongqiao Railway Station, and the Shanghai Metro, providing convenient access to other parts of the city. The development of the Pudong International Airport has also made the area a major transportation hub in East Asia.

In conclusion, Pudong New Area is the most prosperous and expensive area in Shanghai due to its economic strength, high concentration of luxury amenities, and strategic focus on finance and technology. The area's high per capita GDP, expensive real estate market, and excellent transportation infrastructure all contribute to its status as a symbol of Shanghai's modernity and affluence.