9 to 10 times. "E-class" is an online virtual community with college teachers and students as the main users. Provide a comprehensive interactive community integrating education, teaching, life service, culture and entertainment. The flag can be raised on it, and it can be raised 9 to 10 times a day. The website integrates mainstream applications such as forums, social networking, blogs, Weibo, etc., and adds a one-stop service function of educational informatization customized for teachers and students at school, supporting WEB and mobile phone clients.