How does the Jing-Jin-Tang expressway connect Beijing, Tianjin, and Tanggu?

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The Jing-Jin-Tang expressway serves as a vital transportation link in North China, functioning as the primary all-weather freight route connecting Beijing, Tianjin, and the port area of Tanggu.1

By providing a direct road connection from Beijing through Tianjin to Tanggu, the expressway facilitates the movement of goods to the sea. This route is essential for the region's economy, as Tanggu serves as the outport for Tianjin, acting as a major collection and transshipment center for exports and a primary entry point for heavy machinery and capital-intensive imports.1