This paper took nearly two months to complete, and I encountered numerous difficulties and obstacles in the writing process, all of which were spent with the help of my classmates and teachers. In particular, I would like to thank my thesis supervisor, Mr. XX, who gave me selfless guidance and help and took pains to help me revise and improve my thesis. In addition, when I was looking for information in the school library, the teachers in the library also provided me with many aspects of support and help. Here, I would like to express my heartfelt thanks to all the teachers who have helped and guided me!

Thanks to the scholars who participated in this article. This paper quotes the research literature of several scholars. Without the help and inspiration of their research results, it is difficult for me to finish writing this paper.

Thanks to my classmates and friends, they gave me a lot of materials in the process of writing my thesis, and they also provided enthusiastic help in the process of writing my thesis and typesetting lamps.

Due to my limited academic level, there are inevitably some shortcomings in this paper. Please criticize and correct me!