Reviewing the past and knowing the new refers to knowing and judging new things through understanding and mastering the known things.

Being able to look back on the past and learn new things shows that this person is thoughtful and organized, and he is knowledgeable and thoughtful. "Reviewing the past and knowing the new" is not to repeat or repeat what has been learned, but to think about what has been learned and explore and understand new knowledge in thinking, so as to "know the new" with the continuous development and improvement of ideological understanding. Of course, such people will also carry forward their own ideological understanding, whether they are apprentices or not, they can play the role of teachers. As for those who can review the past and learn something new, be teachers and learn from them. Of course, if you can do this, then you can also play the role of a teacher.

Being able to review the past and learn the new shows that this person has formed his own thoughts and methods. And a person who has thoughts, methods, keeps reviewing and thinking, and can carry forward his own thoughts and understanding should not be a problem in terms of quality.