On December 13, 2020, the Department of Information Management of East China Normal University where Fan Bingsi worked took the opportunity of the China Library Journal Editorial Department to host the 2020 Forum of "Nothing but Great Way-Library and Society", which was officially retired a few months ago. Fan Bingsi held a symposium. He himself reviewed and summarized his academic career with a short speech, which is composed of important treatises, important activities and academic transitions. As a fellow, I have read and been touched and thought about those works; I have also participated in some important activities that Fan Bingsi believes to have participated in; I have witnessed some turning points in his academic research direction. So, under the planning of the editorial department of "Library Magazine", there is the following dialogue. Different from his personal review and summary, as the questioner, I have my own perspective of observation of him. In a sense, this perspective may be the common observation perspective of many fellow students and later learners.