no website on file — from open-source research, nothing to check against
The workshop of folk master Ji Yishun; 'pictorial' school of Yixing ceramics, merging teapot with calligraphy and sculpture.
website not found; master with a full array of titles (three 'grand masters')
The source export carried a verification date of 2026-08-16 — later than today, so the check could not have happened. The mark was removed; the original value is kept in the data.