Discussion about the defect of declaratinn never stops. Regulating flaws to obtain true meaning is the goal for every country in theory establishing and law making. Mr. Tan Heping' s masterpiece Comparative Study on Theories and Legislation of Defect of Declaration has made an inepth study on this topic with new perspectives, detailed arguments, and creative and pragmatic ideas. The book not only compensates for the lack of the domestic theory, it also provides a theoretical guidance for the c...