Ordained to ministry Lutheran Church in America, 1961. Missionary, pastor Taiwan Lutheran Church, Taichung, 1964-1974. Associate professor China Evangelical Seminary, Taipei, Taiwan, 1975-1983, 85–.
Vice chairman Taiwan Church Growth Society, Taichung, 1971-1979, founder, director, 1971-1983. Co-founder, member Center Church Renewal Development and Research, Taipei, since 1982. Field education director China Evangelical Seminary, Taipei, 1978-1983.
Author: Taiwan: Mainline versus Independent Church Growth, 1970. The Church in Taiwan: Profile 1980, 1981. Mending the Nets: A Mid-1980s Review of the Church in Taiwan, 1986.
Author and editor: I Will Build My Church, 1975. Contributor articles to professional journals. Delaware Taiwan Good-Will Delaware, Taipei, 1979.