In recent years, many teachers have left one after another, including Shi Leipeng, Chen, Chen and other famous teachers in the industry. Examination worm is a one-stop service platform for college students to prepare for exams. Committed to providing quality training services and user experience for college students. The examination products cover CET-4 and CET-6, postgraduate entrance examination, study abroad, practical English, teacher recruitment, offline postgraduate entrance examination products and other courses, providing users with a full set of preparation plans including live course broadcast, teaching AIDS and practice services. On February 22, 2024, the online education and training institution Kao Chong closed down, and then the staff replied that it was not closed down, but adjusted its business.