The renowned physician Bian Que (whose given name was Qin Yueren) acquired his exceptional medical skills from Chang Sang Jun, a truly outstanding master of medicine. During the time Bian Que worked at an inn, Chang Sang Jun was a frequent guest. Bian Que, observing Chang Sang Jun's extraordinary bearing, recognized him as a person of great ability and always served him with profound respect and deference.

Over more than a decade, their acquaintance deepened. Eventually, Chang Sang Jun entrusted Bian Que with all his secret medical remedies and taught him his unique methods for observing and diagnosing illnesses.

With this profound knowledge, Bian Que's diagnostic abilities became unparalleled. It is said that 'using these insights to examine patients, he could clearly perceive and understand the root causes and critical conditions (症结) within their five internal organs.'