[Differential textural research on fabricator of the facsimile handwritten copy of Northern Song edition of Shang han lun].

The 'facsimile handwritten copy of Northern Song edition of Shang han lun' was collected from Japan and named by Yang Shou-jing (1829 - 1915). It was identified as a apocryph. Some scholars even thought if was fabricated by Yang, and announced the messages including the process of fabrication by Yang, being printed by Ke Heng-shi, and being bought by Zhang Jun-heng.