1February 1993 ——1July 1993 Social Education in Dongxiaokou Township, Changping County, Beijing;
1September 1993 ——165438+1October, a further education visit to the Law School of Nagoya University, Japan;
1May, 994 ——165438+1October, cooperative research by the Law School of Aichi University, Japan;
1From March to April, 1996, he was invited by the State Council to visit the United States as the first batch of "international visitor program" of the Ministry of Education of China.
1998 attended the second cross-strait administrative law seminar organized by Taiwan Province University of Political Science and made relevant speeches.
From September 2000 to September 2006, 5438+0, a senior visiting scholar of Fulbright Project in the United States visited the United States;
From September 265438 to September 27, 2002, he attended the second regular session of the UNDP/UNFPA Executive Board in 2002 as the legal adviser of the China delegation;
On June 5438+February, 2002, at the invitation of Kyushu University in Japan, he participated in the international academic seminar "Asia: Open Society and Law" jointly organized by Japan's Ministry of Education, Culture, Sports, Science and Technology and Japan's Academic Promotion Association, and gave a keynote speech.
In 2004, he participated in the 6th East Asian Administrative Law Seminar held in Seoul, South Korea.
In May, 2006, he participated in the "Seminar on the Protection of Personal Rights across the Taiwan Strait" organized by Taiwan Province University of Political Science and delivered a keynote speech.
In June, 2006, he participated in the "Seminar on Comparative Study of Legal Systems in Four Places across the Taiwan Strait" organized by the Institute of Law of Taiwan Academia Sinica, and made a special academic comment.