Tianjin (天津 previously spelled Tientsin), literally meaning "Heavenly Port," is an important harbour city in China on the Hai He river (from Beijing) and Bohai Gulf of the Yellow Sea (Pacific Ocean).
Tianjin is one of four independent municipalities in China and as such does not belong to any province (see Tianjin Municipality). Historically, the city was the capital of the Zhili[?] province.
At Tianjin the Grand Canal of China connects with the Huang He and Chang Jiang rivers.
The city was opened to foreign trade in June 1858, at the end of the first part of the Second Opium War, when the Treaties of Tianjin[?] were signed.
They can generally be divided into two classes; missions
which map (or attempt to map) the entire sky,
and observatories which make observations of ...
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