Towns & cities
Duyun
Capital of Qiannan Buyei and Miao Autonomous Prefecture in Guizhou province in the People's Republic of China
1 film or series was filmed in Duyun. For these, the exact spot is not known. Wikipedia names 1 more.

TV series filmed in Duyun
Filmed here, per Wikipedia
Wikipedia says these were filmed in Duyun too. Each title’s page links to the sentence that says so.
Other filming locations in China
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Towns & cities
Central
China
Central business district in Hong Kong
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Streets & squares
Central–Mid-levels escalators
China
Covered escalator system in Hong Kong
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Streets & squares
Queen's Road
China
Series of roads in north Hong Kong Island, Hong Kong
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Landmarks & buildings
International Finance Centre
China
Commercial development in Central, Hong Kong
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Landmarks & buildings The Center
China
Skyscraper in Hong Kong
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Towns & cities
Guilin
China
Prefecture-level city in Guangxi, China