The protagonist Amrico is an Italian teenager. In the form of a diary, the author recorded all the love stories that happened every day in the fourth grade Amrico school year. This book is about the affection between parents and children, the friendship between classmates, and the teacher-student relationship between teachers and students, which makes people deeply moved. There are several articles in this book that have benefited me a lot. In Noble Behavior, Amrico saw four students teasing Cross with red hair in class. He is a child with a disabled arm and his mother sells vegetables for a living. The students who made fun of him became more and more excited. The rogue Frandi jumped on the stool and pretended to be Cross's mother carrying the food. At this moment, Crowe was so angry that he threw the ink bottle on the table at Frandi, but it didn't hit him, only the teacher who was entering the classroom. At this moment, Karen suddenly stood up and admitted that she did it, but the teacher said it wasn't him. After a while, Chloe stood up and told the teacher what happened in tears. Then, the teacher went up to Karen and praised his noble heart. Seeing this, I can't help but admire Karen's noble heart. He also tells us how to be a man, how to do things, and how to be a person with excellent moral quality; Tell me, as long as I have a loving heart, I will feel happy and extremely happy.