Elite tutor network. The champion workbook is one of the series of books on the road to success for champions. The editor-in-chief of this series is Cheng Zhenggui and the editor-in-chief is Cheng Haijiao. According to the relevant information, the answer to the champion's exercise book is on the elite tutor's online, with not only the answer but also the analysis. Elite tutor network is an online teaching assistant platform focusing on junior and senior high school education, which provides offline full-time and part-time tutors for colleges and universities, devotes itself to providing a platform for primary and secondary school students to hire tutors and also provides a platform for tutors to find jobs.