From 52 to 107, some people can't get over it in their lifetime, but it only took him three years. In the three years, he persevered with, sometimes a stubborn demand, sometimes a persistent effort. From the unforgettable TOEFL scores to the admission notices from Imperial College of Technology, London University, Hong Kong University and other well-known universities, this is the glorious years of homeroom teachers. For the sake of this glory, he turned his tears into the love of gaze, and made great efforts to dedicate to his students. With a ray of stubbornness, a ray of stubbornness, he watched in the fragmentary time.