Where was The Chinese Botanist's Daughters filmed?
2006 film by Dai Sijie
The Chinese Botanist's Daughters (2006) was filmed in Hanoi, 1 place named in its Polish Wikipedia’s article, in Vietnam. Wikidata records no filming location for it at all, so the article is the only recorded source. Each place says where its claim comes from.
Places per Polish Wikipedia's article
Polish Wikipedia’s article names 1 place. Each links to the sentence that says so.