On September 15, 2009, five United States experts who participated in the China-US Librarian Professional Communication activities visited Lanzhou Branch of National Science Library. They are: Miss Jiang Shuyong of the University of Illinois at Urbana-Champaign Library of Asia, Dr. Hwa-wei Lee, former chief of Asian Division of the Library of Congress, Mr. Hung-Yun Chang of the New York Public Library, Mr. Yao Yuan of the Library of Congress, and Mr. Haiwang Yuan of Western Kentucky University Library. Accompanied by Deputy Director Gao Feng, the US experts first visited the exhibition room, the Chinese and foreign language reading room, graduate students information commons, Department of Information Research and Department of Information Technology, and then they had a meeting and discussion with the librarians from the library.