When the paper is about to be completed, my mood can't be calm. How many respectable teachers, classmates and friends gave me wordless help from the beginning to the smooth completion of the thesis? Please accept my sincere thanks!

Thank you for raising me on the Loess Plateau, my folks, and my parents who raised me with shit and urine. Thanks to Aunt Wang who wiped my PP in kindergarten, and to the girl whose skirt was torn by me with a knife in primary school. If there was no such experience at that time, I wouldn't realize it now.

Thanks to countless girls who rejected me from kindergarten to university, if it weren't for you, I would have had so much time to do my technical research. You are so kind to me, I understand you. I also thank the girl I rejected (although not yet, I believe there will be no more).

Thanks to the brothers in trouble in the dormitory, it is your ravages on me over the past four years that make my will quality so strong. University really exercises people.

I would also like to thank my classmates who played online games with me. I will never forget the day when we cut monsters together. Thanks to the friends in online games, especially our class teacher. You gave me a lot of equipment, which made me physically and mentally happy and better devoted to my graduation project.

Thanks to Mr. von Neumann. It was he who built the world's first computer, which made our descendants turn guns from "academic bandits" with scissors and paste into "academic pirates with mice and tablets".

Thanks to Mr. Bill Gates. He resolutely dropped out of Harvard with fearless heroism and sacrifice, which pushed human history into the information age. We are unimpeded on the information highway, and it is with the help of the network that we can find rich and informative papers and materials. It can be said that Mr. Bill Gates traded his dropout for the graduation of millions of China college students.

Thanks to Baidu and Google. Their search function is huge, fast and free, which makes it easy for us to search for the "paper materials" we need. With these "paper materials", we can successfully complete our "patchwork" paper. I would also like to thank Google for adding translation function. Its translation is not only accurate but also powerful, and it can translate an entire paper at one time. Our foreign languages and literature depend on it.

Thanks to my mentor. He put down his sacred dignity as a teacher and told me how to finish this paper as a friend. He told me how to collect information; He told me how to find relevant papers quickly; He told me which school's website has a master's and doctoral thesis in this major; He instructed me how to use the documents at hand to choose, choose, graft and integrate. The completion of this paper is inseparable from his careful guidance and tireless teaching.

Thanks to the teacher in charge of defense. When I didn't know what it was, they only asked me two questions-did everyone know what it was written about? Know; Have you read all the reference materials? Yes, I did. Then I passed the defense. They are such amiable teachers, they are such considerate teachers, they are such approachable and great teachers.

Thank those classmates who have been with me for four years. These days, they have worked hard with me to encourage and support each other. You help me find what I need, communicate in time, and avoid a paper crash.