1994年，原国家古籍整理出版规划小组设项编制《全国古籍总目》，北大图书馆承担了经部的任务。我具体负责查考著者生卒年。在查考明代著者时，《千顷堂书目》（以下简称《于目》）给了我很多帮助。我深深地体味到，其价值已远远超出了其书目本身。由此，我对它产生了浓厚的兴? In 1994, the former National Book Arranging and Publishing Planning Group formulated and compiled the “National Catalog of Ancient Books”, and the Peking University Library undertook the task of the Ministry of Education. I am specifically responsible for checking the birth and death of the author. When studying the Ming Dynasty author, “Qianshitang bibliography” (hereinafter referred to as “in the head”) gave me a lot of help. I deeply appreciate that its value has gone far beyond its bibliography itself. As a result, I have a strong interest in it?