These two days, a doctoral thesis swept through our circle of friends. In fact, I was born to read this doctoral thesis. When I finished reading this paper, I still felt depressed and tearful, so why did it make people feel tearful? Today I will share my personal views with you. First of all, when reading this doctoral thesis, we should actually be able to feel that although it is only a short article, it contains the first half of a very difficult person. Actually, this doctor's family is not very good. On the contrary, his family is ordinary and even has some difficult families. His first memory is that when he presented this doctoral thesis, he said that he had overcome many difficulties and that he could do it. Maybe for many people, he has a very good family and never needs to worry about life, but there are also many. Secondly, I think the thanks for this doctoral thesis can attract so many people's attention, or make many people cry, because people like us have experienced something that students like this have experienced, and their experiences have made us scream or have some imagination about poverty. Although not everyone has this experience, it can shake everyone's heart, so it is easy for him to make people cry. Finally, I think he made us feel so sad, or shed tears, because of his personal persistence. He insists on the idea that his efforts can change the future and destiny, and his persistence has also been recognized by everyone, which is also a very classified point. It's someone we admire!