Simply put, it belongs to the trinity class mode, that is, full-time face-to-face teaching+live class+network recording and broadcasting class. In addition, there is a comprehensive online tutoring after class, and candidates can flexibly choose the corresponding course or mode according to their own situation. For example, when the epidemic situation in COVID-19 is repeated now and last year, they will also flexibly adjust the way of attending classes to ensure safety and learning effect.