The teaching level didn't improve, but was educated by the leaders. Time Travel 2 is a short video shot by a team of media blogger Lu. The video is rich in content and positive. In the video, Teacher Lu claimed to be herself ten years later. Ten years later, Mr. Lu's teaching level has not improved, and he is still being educated by the leaders, warning the audience to cherish time and improve themselves. Teachers are professionals who teach students correct knowledge. Teachers have all kinds of education, and they also refer to people who are worth learning in a certain way and can bring correct knowledge and ability to everyone.