The History of Tianjin
Photo 1:Beijing-Hangzhou Grand Canal, Excavated in the Sui Dynasty (581-618 AD) Tianjin, alias Tanggu,Jinmen. As early as the Warring States period, Tianjin had already formed some settlements of ancestors. After the construction of the Beijing-Hangzhou Grand Canal in the Sui Dynasty , at the intersection of the South Canal and the North Canal (the Sancha Estuary at the source of the confluence of the Haihe River), the earliest