A page from the “Shi yi de xiao fang” 世醫得效方 (Effective remedies tested by generations of physicians) https://hdl.loc.gov/loc.asian/lcnclscd.2012402245, a very rare and important title of traditional Chinese medicine printed in 1343. The illustration explains how different portions of the eye correspond to body organs known as “the five wheels.” This work is preserved with the traditional gold-edged-in-jade method where each folded leaf has white paper inserted inside to support and protect the pages. Chinese rare book collection, Asian Division.