The field of information systems has a long tradition of using mathematical and economic modeling to understand information systems phenomena and generate useful recommendations. With many emerging phenomena in IS, the need for this type of applied theory research is ever greater. However, the forums for this style of inquiry are rather limited, especially for analytical modeling scholars in China and the surrounding regions. The purpose of the China Workshop on Economics of Information Systems Theory (CWEIST) is to bring together a community of scholars in China and around the world with a shared interest in the use of mathematical and economic modeling for IS and related fields. We hope this summer workshop to become a unique forum for this community to exchange ideas, hone our skills, and form new collaborations across geographical boundaries.