In 1992, he served as Technical Advisor UNDP Education Mission to China. From 1993 and 1998, he served as Chief Technical Advisor for a UNDP project in China called “Basic Education: Teacher Education and Education Administration CPR 91/420”. From 1998 to 2001, he served as International Technical Advisor for a UNDP project China entitled “UNDP/CPR/96/401: Improving Nine-Year Compulsory Education in Poor Areas: Focusing on Girls”. From 2002 to 2007, he served as International Technical Advisor for a UNDP project in China called “UNDP/CPR/01/403: Using Distance Education and ICT to Improve Teacher Quality in Poor Areas of Western China”. From 1974 to 1976, Allen served as Chief Technical Advisor for a UNESCO project in Lesotho National Teacher Training College, Maseru, Lesotho, Southern Africa. In 1990, he served as Co-Director for Project IF, A drug education project funded by the U.S. Department of Education Technical Advisor, UNESCO, Malawi (Africa) Primary Teacher Education Project. In 1993, he served as Technical Advisor in Teacher Education sponsored by UNESCO for Wuhan Institute of Education, Wuhan, China. From 1993 to 1995, he served as Technical Advisor for a UNESCO project in Namibia called “In-Service Teacher Education Project”. He also served as Technical Advisor in Teacher Education sponsored by the World Bank for a China project in Shanxi Institute of Education, Taiyuan in 1991 and in Hunan Institute of Education, Changsha in 1993. Allen, American Eminent Scholar of Educational Reform, has served as a chief technical adviser and consultant to many Chinese educational programs sponsored by the United Nations or the World Bank since 1991, having helped prepare and train thousands of school teachers and education administrators in urban and rural China. On his 44 visits to China, Allen showed great concerns and interests in Chinese educational issues. He made significant contributions to various educational programs and technology improvement in elementary and secondary schools. Allen first came to Shanxi in 1991 as a Technical Advisor under the UNDP Education Mission to China. He held a month-long workshop on education reform in Taiyuan, which was the first of his 44 visits to China. He came to Taiyuan again in 1992, introducing microteaching to Shanxi educators. After that, he revisited Shanxi a few more times to follow up with microteaching progress. In 2008 and 2009, invited by Taiyuan Education Bureau, Jincheng Education Bureau, and Jincheng Technical & Vocational College, Allen came to Taiyuan and Jincheng to help with a teacher appraisal system focusing on 2+2, an assessment system developed by Allen.