徐汉生

Xu Hansheng (徐汉生) was a Yixing pottery artisan whose work and life details are not provided in the available source material. The page reference (597) appears to contain only his name without accompanying biographical information, historical context, or details about his contributions to Yixing pottery.

Without explicit information in the provided book content, it is not possible to construct an accurate biography, determine his historical period, or describe his artistic achievements and significance in the Yixing pottery tradition.