five of the medical works were published with assistance from kuan mao-tsai. the illustrations of his "treatise on physiology" were derived from william cheselden's 1730 "anatomical tables" and 1733 "osteographia". hobson's work has been called "instrumental" in introducing western anatomical knowledge to china and japan, beginning their shift away from traditional understandings based on the flow of "qi" and other pseudoscience.