Write a 300-word composition about two boys fighting in the classroom.

I remember one day in my senior year, my classmate Zhao Yitian and I had an argument over a trivial matter. At noon that day, the students returned to the classroom to play after lunch. Suddenly I heard the sound of chasing and running outside the classroom. I went out and saw Zhao Yitian chasing Shen Tingting. Without saying anything, I rushed up to stop him and said to him, "Boys can't hit girls, you can't hit female classmates." Zhao Yitian rushed up to hit me after hearing this, and I fought back. After a while, I scratched a long scar on his forehead and a few small scars on his face. At this time, the class teacher heard the news and rushed over. When he saw it, he immediately sent us to the school hospital to wipe the potion. After understanding the situation, the teacher criticized us that "students should unite and be friendly, and don't quarrel and fight." You are a first-grade pupil, and you have grown up. You must think twice before you act. "We both bowed our heads in shame and sincerely apologized to each other. This incident made me deeply realize that students must be United, friendly and understand each other in order to establish sincere friendship.