He was invited to study at the University of Pittsburgh as a visiting scholar. Offering "information retrieval" and "professional English for library science" for undergraduate students of library department, and offering "network information retrieval" general course for all undergraduate students; Offering "information retrieval course" for graduate students. The main research fields are information organization, information retrieval and consultation.
The enrollment direction of master students is information retrieval and consulting, and the enrollment direction of doctoral students is information retrieval and consulting research and digital library research.