范曾

No biographical information about Fan Zeng (范曾) as a Yixing pottery artisan is present in the provided book content. All source pages appear to be blank or contain no text. It's worth noting that Fan Zeng is more commonly known as a contemporary Chinese painter and calligrapher rather than a Yixing pottery artisan, though without the actual book content, no definitive information can be extracted about this individual's connection to Yixing pottery.