Taiwan, academic year 1971 72, as a student in the Inter University Program for Chinese Language Study.

People's Republic of China, as member of University of Pittsburgh Study Tour, December 1978 January 1979; tourism and interviewing, November 1979.

Hong Kong, Autumn 1979, at the Universities Service Centre, doing research for manuscript on the Chinese commercial system.

Taipei, Taiwan, June 1982, for conference participation.

People's Republic of China, research on China's "economic readjustment" in Wuhan City: interviews conducted in Wuhan with government officials and library research at Wuhan University, May June 1983.

People's Republic of China, interviews and library work in Wuhan on current economic policy, May 1984.

People's Republic of China, interviews and library research on China's "economic readjustment," September December 1984; additional interviews, May 1985.

Trips to People's Republic of China, interviews and library research on China's latest urban reforms and their implementation, Wuhan, June/July 1987; and Wuhan and Shenyang, June/July 1988.

People's Republic of China to launch a study of the political management of China's transients, September 1990.

Hong Kong and People's Republic of China for research on China's transient population, June/July 1991. Affiliations with
Universities Service Centre, Chinese University of Hong Kong; and with the Heilongjiang Academy of Social Science.

Hong Kong and People's Republic of China for research on China's transient population, May/June 1992. Affiliations with Universities Service Centre, Chinese University of Hong Kong; and with the Social Science Academies of Guangdong, Wuhan, and Tianjin, as well as with the City Foreign Affairs Office of Wuhan.

China, August, 1994 on World Bank mission, "Decentralization in China."

China, Conferences, 1995, 1996.

Hong Kong and China, August/September 1998, for research on China's unemployment, funded by IGCC grant from Smith-Richardson Foundation.

Hong Kong and China, August/September 1999, research on Chinese unemployment, funded by Center fro the Study of Democracy, UCI and Smith Richardson Foundation.

Hong Kong/China, September, 2000, research on unemployment, funded by Center for Study of Democracy, UCI and School of Social Sciences, UCI.

Hong Kong/China, October/November 2001, research on China's entry into the WTO, funded by Smith Richardson Fundation.

China, August 2002, research on employment and social welfare reform.

China, August-September 2007, research on poverty program.

China, August 2008: Research on poverty program, Wuhan and Jingzhou, Hubei.

Wuhan, China, July 2009: Research on poverty program, Wuhan.

June 2010: Visiting scholar, Department of Urban and Regional Planning, School of Geography and Planning, Zhongshan University, Guangzhou, China.

China, June/July 2010: Research on poverty program, Guangzhou; Xiantao, Qianjiang, Hubei; and Lanzhou.

China, July, August 2011: research on poverty program, Xi'an, Wuhan.

China, June, July 2012: research on poverty program, lecture, Wuhan.

China,June 2013, research on poverty program, lectures, Shanghai (research support from UCI Center for Study of Democracy).

China, October to December 2014, short research trips to Lanzhou, Nanjing, Wuhan, Beijing, funded by The Ford Foundation.

China, June 2015, Nanjing University Summer School, talk.

China, September 2017, conference participation and gave several talks.