"Reviewing" what you have done in the past in your mind, reviewing, reflecting on and exploring past thoughts and behaviors, finding out the reasons, summarizing the rules, guiding us to solve problems and improve our abilities , this is the definition of "reviewing" . The most important thing about reviewing is to maintain a "growth mindset". The core value of reviewing is to "consolidate success and correct mistakes". The core purpose is to let people learn lessons from actions and put them into subsequent improvements.