The most tragic part of a teacher's teaching career is to stay in place and stay in the same place for five years or ten years. For this reason, teachers must carefully look for breakthroughs in continuous progress, even if they are in the "plateau" of teaching. To overcome the "plateau phenomenon", there must be new progress. Teachers must have the annual rings of the times, and they must keep up with the times. The "plateau phenomenon" mentioned in the article mainly refers to teachers:. ['Slow updating of teaching methods.', 'Teaching is difficult to improve.', 'Difficult to surpass the level of seniors.', 'It is difficult to surpass what you have already achieved.']