Chengdu is a major megacity and one of the most populous urban centers in China, serving as the capital of Sichuan Province. As of 2024, it is recognized as one of the country's four cities with a resident population exceeding 20 million people, ranking alongside Chongqing, Shanghai, and Beijing. Covering an administrative area of over 14,000 square kilometers, it functions as the primary economic, cultural, and transportation hub of Western China. The city has experienced significant growth due to a boom in technology and innovation, attracting over 260 Fortune 500 companies and hosting one of the world's busiest airports, Chengdu Shuangliu International Airport. Its status as a "Tier 1" or sub-provincial city underscores its immense scale and importance within the global urban landscape.