Don't do big things, don't do small things, and the next sentence is what you can do with me. This sentence comes from what happened in class, written by Yu Jie. National model teacher, top ten education figures in Suzhou, the first batch of famous teachers in Suzhou, top ten class teachers in Suzhou, and good people in Kunshan. He has published books such as Say No to Education Failure, Education is So Beautiful, and Dew on the Grass Tip. The educational blog "Three-year Fate" has more than four million hits and has become a professional growth platform for many front-line class teachers. He held more than 200 educational lectures all over the country and was praised as an "angel teacher" by the media.