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简介：Tongzhou is the northern terminus of the Beijing-Hangzhou Grand Canal. Rice, salt, silk and cloth from the south of the Yangtze River are all transported here through the canal, and then sent ashore to the capital. Hence the name "Tongzhou". Due to the benefit of the canal, Tongzhou was also a gathering place for merchants from all over the world, and its prosperity was no less than that of the capital.