Prof. Qin is my teacher of Mathematical Analysis when I entered the Department of Mathematics, Fudan University, in September 1980. His teaching was excellent and left deep impressions on me.
Later, I became a librarian of the National Library of China, and he became the Fudan University Librarian. We met each other several time during international and national conferences and meetings.
Prof. Qin's memorial service will be held in Fudan University Library next Thursday (September 29).