From the Southern and Northern Dynasties to the beginning of the Northern Song Dynasty, the models of "master and apprentice" and "physician of long family tradition for generations" were the main ways for teaching medical knowledge. With the rapid amassment of medical books in the Song Dynasty, "reading text" became increasingly important and prominent in the inheritance of medical knowledge, which could be seen clearly from the descriptions on physicians in the Song Dynasty. For instance, Hao Yun's medical knowledge was recorded as a model of "master and apprentice" in Hao Yun's Epitaph written by Zhang Xun. However, in Ye Mengde's description, this model was played down, while at the same time, "reading text" was emphasized. Pang Anshi, though coming from a physician family for generations, got rid of some medical knowledge from his own family and turned to the medical knowledge by "reading text". According to Pang Anshi's Epitaph written by Zhang Lei and Fang ji Zhuan (Biography of Technicians) in Song shi (The Song History), Pang Anshi was a typical model of becoming a famous physician by "reading text". In the Epitaph, Pang Anshi's brilliance was stressed, and in the latter, "reading text" was more important and the family tradition was denied. In the description of the Song Dynasty, Chen Zhaoyu's wonderful medical skills was coming from the "practice", and "reading text" was denied right away. What is more, "reading text" was introspected and criticized through Chen Zhaoyu's lip. The different descriptions of the Song Dynasty reflected the change of inheritance model of medical knowledge.