#sixteen_prefectures
Sixteen Prefectures
Historical region in northern China
The Sixteen Prefectures of Yanyun comprise a historical region in northern China along the Great Wall in present-day Beijing, Tianjin, and part of northern Hebei and Shanxi. It was a site of constant military and political conflict between various dynasties from the end of the Tang dynasty until the establishment of the Yuan dynasty.
Sat 24th
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