On the evening of March 12, Baidu sent an email to all its employees, stating that Jian Bian, director of the search engine product marketing department, would leave Baidu for personal reasons. His labor relationship with Baidu will officially end at the end of this month. As the leader of the department which generates more than 90% of Baidu's cash flow, Jian Bian has developed the search engine product marketing department from the initial two people to its present large scale, and he is undoubtedly a great contributor to Baidu.