| Taiwanese legal history, traditional Chinese law, law and society |
- Clerk, R.O.C. Army’s Martial Court (1982-1984)
- Attorney, Tseng Tsai Chen & Yang (Baker and McKenzie) (1986-1987)
- Attorney, Ding & Ding Law Offices (1988 – 1989)
- Lecturer (1993-1994), Associate Professor (1994- 999), Professor (1999-2006), Lifetime Distinguished Professor (2006- present), Vice Dean of College of Law & Director of Graduate Institute of Interdisciplinary Legal Studies (2006-2009), NTU Chair Professor (2014- present), Department of Law, National Taiwan University
- Researcher, Higher Legal-political Education Center, Graduate School, Hokkido University (2000-2001)
- Visiting scholar, Harvard Law School (2001)
- Joint Appointment Research Professor, Institute of Taiwan History (2002-present) and Institutum Iurisprudentiae (2005-present), Academia Sinica; member, certain committee of Academia Sinica
- Part-time Professor, Department of History or Institute of Taiwan History, National Chengchi University (2003-2015)
- Visiting scholar, University of Washington School of Law (2005, 2013)
- Visiting scholar, Waseda University (2006)
- President, Taiwanese Legal History Association (2006- present)
- Visiting fellow, National University of Singapore Faculty of Law (2007)
- Chairman, Division of Legal Science, National Science Council (2007-2009)
- Part-time Professor, Department of law, National Taipei University (2009-2018)
- Lecturer, Judges Academy, Judicial Yuan (2009, 2012-2014)
- Visiting Research Scholar, Graduate Schools for Law and Politics, University of Tokyo (2010)
- Member, Virtual Advisory Board, Asian Law Centre, Melbourne Law School, University of Melbourne (2010- present)
- President, Taiwan Law Society (2011-2012)
- Part-time Professor, Institute of Taiwan History, National Taiwan Normal University (2014-2015)
- Director, National Taiwan University Press (2016- 2020)
- President, Taiwan Institutions and Economic History Association (2017-2018)
- Chair Professor (Visiting Scholar), National Chiao Tung University (2018-2021)
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- Acer Enterprise Thesis Award (1988)
- Asian Youth Scholar Grant, University of Melbourne (1996)
- Japan-Taiwan Exchange Center Scholarship (1999)
- Outstanding Teaching Award, National Taiwan University (2000)
- Fulbright Scholar (2001)
- Outstanding Research Award, National Science Council (three times, 2001, 2010, 2013)
- Outstanding Research for Archives Award, Taiwan Historica (2002)
- The 48th Academic Awards, the Ministry of Education (2005)
- One of the 12 Best Teachers in the National Taiwan University (2005)
- Award for subsidizing publication of monograph and article/monograph, Social Science/Humanities & Social Science Research Center, NSC/MOST (2005, 2018)
- Excellent Tutor Award, National Taiwan University (2009)
- Lifetime Achievements Award, University of Washington School of Law (2013)
- Excellent Teaching Award, National Taiwan University College of Law (2015, 2018)
- Excellent Teaching Award, National Taiwan University (2016-2017, 2019)
- Scholarly Monograph Award in the Humanities and Social Sciences, Academia Sinica (2018)
- The 23rd National Chair Professorships, The Ministry of Education (2020)
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