The 长三角, or Yangtze River Delta, is a densely populated and economically vibrant region in eastern China. It includes major cities like Shanghai, Nanjing, and Hangzhou. This area is known for its advanced manufacturing, technology, and finance sectors, making it a key driver of the national economy. The 长三角 is characterized by its rich cultural heritage and diverse landscapes, including rivers, lakes, and mountains. It is also a significant transportation hub, with extensive railways, highways, and ports that facilitate trade and travel. The region plays a crucial role in connecting China to global markets.