![](http://www.alamy.com/thumbs/6/8D468B06-CF9B-41BB-BE8D-672D42DD6FB1/2H444X1.jpg)
Li Chunfeng, the Chinese mathematician, astrologer and cosmologist, wearing traditional costume, holding the 'Eight Trigrams' symbol incorporating the 'Yin-yang' symbol. Watercolour, China, 18--.
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Photo credit: © Well/BOT / Alamy / Afripics
License: Licensed
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