He is interested in the sociology of law. He co-authored a series of articles on the courtroom and mediation discourse in China today. He is currently co-authoring (with Xin He) a book manuscript about the Chinese courts of China. Specifically, the book analyzes how the Chinese judiciary operates in a complex ecology of governance today. He has done empirical work on the bilingual legal system of Hong Kong, the use of court interpreters in the United States. His previous book, The Common Law in Two Voices – Language, Law, and the Postcolonial Dilemma in Hong Kong (Stanford University Press 2009), explores how the introduction of Chinese into the common law system has reshaped the social and moral character of the law in Hong Kong.