Dear Colleagues, I am pleased to welcome another new member to the listserv, Zhang Han (zhanghan426@gmail.com ), who introduces himself thus: I am a member of CBDB text-mining group, and I major in computer science and minor in Chinese history in Peking University. I am inclined to pursuing a PhD in history or sociology instead of computer science. It would be natural for a CBDB participant like me to use data in CBDB to further carry on my research. I will not be foreign to technical problems, and I can modify the database to satisfy my research need. For my interest, I am focusing on the interaction of different kind of social relation in Song Dynasty. Most research only pays attention to a specific relation, segregating the society into the realm of political, philosophical, literature history, etc.. As a consequence, I want to explore to what extent the scholarly, literary and political relation among the literati influence each other. For the Song Dynasty, a meaningful question would be how the political and literary interaction, serving as a social context, influence the scholarly affiliations of Neo-Confucians. As a subsequent analysis, I can further trace individual action in a society with intertwined relations, rather than in a simply structural deterministic way. I want to apply suitable skills of formal social network analysis to the database and make a reasonable interpretation of my result. Please join me in welcoming Zhang Han. Michael