The online historical map of China during the Tang Dynasty in 669 was derived from the China Atlas in the China Atlas World Atlas (Sheet 60th Anniversary Package)，published by China Map Publishing House, this atlas of China's National Boundary Line is drawn in accordance with the 1:14 million Topographic Map of the People's Republic of China published by China Map Publishing House in 1989.
The online historical map of the Tang Dynasty in 669 of China mainly indicates the capital city, the residence of prefecture and prefecture level, the boundary of regime and tribe, the boundary of road level administration, the current national boundary, the current regional boundary and the current military boundary,note: the brown lines and marks in the drawing are the current contents, the scale is 1:52 million.
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