The Pearl River is one of the major river systems in South China. Stretching over 2,000 kilometers, it plays a crucial role in the region’s geography and economy. The Pearl River Delta, located at its estuary, is one of the most densely populated and economically active areas in China. The river originates from the Nanling Mountains and flows through Guangdong Province, Hong Kong, and Macau before emptying into the South China Sea. Its basin covers a vast area, supporting numerous cities and industries that rely on its water resources for agriculture, industry, and daily life.