In this short scene, we are introduced to a teacher named Yangjianghai, who is working in his classroom. He is constantly stressed out by his students, who are constantly running late for class. He has a plan to get his work done on time, but one of the students is always staring at him. He decides that he must take care of the two students who are running late. He knows that they will sneak out during the day to play soccer, so he has to make sure that they finish their homework on time. The first obstacle he must deal with is the student who is running late, because he will have to stay home to finish his work. The second obstacle is that the student running late will always trap him to mock his class's progress. The third obstacle is the eternal friendship obstacle, because she will give him biscuits to thank him for his improvement. Doggo will eat the biscuits, and it will take time for him to get to the hospital to be treated for his injuries. The teacher has to give a special recognition to Mr. Yixu, who has improved so much that he has saved his own front teeth. He tells the students that he just saved their front teeth, and they knock on the door. He then tells them that he will take them to the doctor, and that Miss Deer