Campus bazaar is based on Zan-Oh community system, with universities as the center, and provides a localized platform for information mutual assistance. Each bazaar is set up by the students of the university where it is located, and serves as the administrator, who carries out the daily operation of the contents and users of the bazaar and assumes the management responsibility. The community system provides technical support for the fair and does not participate in the specific operation. At present, Bazaar has opened operations in dozens of colleges and universities, providing information exchange services for hundreds of thousands of users.