1990.12-1994.2
University of Los Angeles (California, USA)

1989.8-1990.9
American Graduate School of International Management (Arizona, USA)

1989.1-1989.8
IMD; International Institute for Management Development (Lausanne, Switzerland)

1984.6-1984.9
AIESEC - International Traineeship Exchange Program, worked for the Hilton Hotel. (Budapest, Hungary）

1983.6-1983.9
Michigan State University (Michigan, USA)

1982.7-1982.8
JAPAN-AMERICA STUDENT CONFERENCE
（The 34th conference was held at UCLA, Stanford University, Duke University, George Washington University, the US Capitol, the White House, New York University, United Nations, Harvard University and Wellesley College in the USA.）