On The afternoon of November 5th, 2020, Ms. Ting Chen, assistant professor of Hong Kong Baptist University, gave an online lecture on South China Economic Forum No. 286, and published an academic report entitled "The Origin and Consequences of The Commercial Revolution in Medieval China". Based on historical documents, Dr. Chen ting and his collaborator Professor Gong Qisheng proposed that the reform of the "two tax laws" around 780 A.D. promoted the prosperity of commerce and the emergence of the elite class in the Song Dynasty. To use its own constructed a unique data set, found that Dr Chen ting, which in the middle-late tang is still valid to the central government tax area (effective tax area by the central government) ratio increased significantly in 1077 business tax revenues, a dramatic increase in the number of market, meanwhile number of aristocratic jinshi jinshi proportion and senior officials have also increased. The article reveals why the commercial revolution appeared so early in medieval China, and how it transformed China's political structure from aristocracy to elite government without developing representative government like that in Western Europe.

Professor Liu Will presided over the lecture, professor Dong Zhiqiang and more than 100 teachers and students of the School of Economics and Management attended the lecture online. Professor Liu Would like to discuss the impact of other shocks on the results in just 300 years from 780 to 1077. Professor Lei Lei of Nankai University had a heated discussion with Dr. Chen Ting on the formation of effective taxation zones for the central government.