感谢我的论文导师和朋友们，大学生活即将结束，我将带着遗憾和期待步入社会

As time seems to pass in a flash, my two years of college life is coming to an end. Looking back on my life and study during this time, I am filled with more regrets and nostalgia, but I will sort out my feelings of regret and strive to complete the final thesis work and prepare for the new journey into society. At this moment, I am truly grateful for my thesis supervisor, Ms. Xie Na. From the beginning of the proposal to the completion of the thesis, Ms. Xie has put in a lot of time and effort, being patient and meticulous in guiding us, tirelessly commenting and guiding us in writing. My supervisor has a rigorous academic spirit, profound professional knowledge, noble moral character in educating others, and a serious scientific attitude, which has had a profound impact on me. I express my heartfelt thanks to my thesis supervisor, and thank you for your hard work. I also want to thank my classmates and friends who have exchanged and discussed with me, giving me great help and enabling me to complete the writing work smoothly.

Thesis writing is a discussion and testing of one's academic knowledge. Through thesis writing, I have applied the professional knowledge learned in college to practical activities, and in this learning process, I have not only learned knowledge but also many truths. In the future, whether it is work or study, I will bravely and actively face problems, maintain an optimistic attitude, not be afraid of difficulties, and fight bravely. I will also maintain a learning attitude, constantly enrich myself, and strengthen my knowledge reserves.

At this moment of departure, it is difficult to calm down. Here, I sincerely thank the classmates and teachers who have helped me for the past two years, allowing me to live a happy and fulfilling college life with you. Finally, I want to thank my parents for supporting me to college and for their many years of hard work. Thank you.