Invited by the City University of Hong Kong, Professor Zhenglin Xia and professor Hanxia Liu together with 3 doctor degree candidates present on the conference “the Development of Data Maintaining Law During the Information Era. Held by the P.C.P.D. and the law school of the City University of Hong Kong, the conference aim at discussing the data maintaining law as well as motivate the scholar cooperation and communication between districts. Scholars from home and abroad had a great deal of discussion.