Yangzhou or Yang Prefecture (揚州) was a zhou (prefecture) in imperial China, centering on modern Yangzhou, Jiangsu, China.
In the 10th century, during Wu and Southern Tang it was known as Jiangdu Prefecture (江都府).
The modern prefecture-level city, established in 1949, retains its name.
In the early 1100s during the Song dynasty, there were 56,485 households and 107,579 people.
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