Professor Chen Ziqiang from Taiwan University gave a series lectures for four days in Jiulonghu campus of SEU from October 31^st to November 3^rd, 2016. The lectures was the 6^th of “The Series Lectures of Law Major 20^th and Law School 10^th Anniversary”, which was hosted by associate Professor Gao Ge. Professor Chen Ziqiang graduated from Law Institute and got a law PhD in  Ludwig Maximilian University of Munich in 1992. He specializes in civil property law and commercial contracts, and teaches General Rules of Civil Law, Law of Obligations, Law of Negotiable Instrument and so on. On the lectures, Professor Chen not only shared knowledge but also communicated with teachers and students about related problems about Contract Law in Mainland China.