In a blink of an eye, I have spent four years in the beautiful Dianchi College of Yunnan University. Four years, this is a very important four years in my life. I am lucky to have access to these mentors, who not only taught me knowledge and insight, but also guided my life and value pursuit from a higher level. They made me firm in the direction of my life, gained the motivation to pursue, and left beautiful memories of my college life. Thanks to the four-year training of Dianchi College of Yunnan University. Here, I sincerely express my deep gratitude to my respected teachers and alma mater! This paper was completed under the guidance of my tutor, Mr. Wu Yuning. From topic selection to structural arrangement, from content to text retouching, she has concentrated a lot of efforts. In the process of writing this paper, Mr. Wu Yuning worked tirelessly to discuss many core issues in the paper with me many times, gave me practical guiding suggestions, and made a serious and comprehensive revision of my paper. Teacher Wu Yuning gave careful guidance and guidance to all aspects of this paper from topic selection, conception, data collection to finalization, which made me have a deeper understanding of marketing and finally completed my graduation thesis. I sincerely thank Mr. Wu for his rigorous academic attitude, profound knowledge, keen academic thinking, working attitude of Excellence, aggressive scientific research spirit and tireless teacher style. Mr. Wu's meticulous and conscientious spirit deeply touched me. More importantly, in the process of guiding my thesis, Mr. Wu has been practicing the principle that "it is better to teach people to fish than to teach them to fish". She often teaches me to be ambitious, strictly abide by academic ethics and norms, and lay a solid foundation for further study. Here, please allow me to express my sincere thanks to the respected teacher Wu Yuning! I would like to thank all my colleagues in the Student Union of the Youth League Committee of the Sixth Hospital, Minister Deng Research Department and Vice Minister Yang Ji for their understanding and support for my work. Thanks to my friends Lin and Yang Ji who spent four years in college with me. It is you who encourage me when I am frustrated and support me when I am frustrated. Thank you for accompanying me all the way and making me feel warm at this stop in my life! I am grateful to Sister Lu and her boss of Yunnan People's Broadcasting Station FM 100 for giving me internship opportunities, which made me learn rich social experience before entering the society, raised my attitude towards people to a new height, and made my thoughts more mature. Directors Sa Jie, Lan Feng, Bing Ying and Shi San expressed their heartfelt thanks for their help in their work. Thank you, Moon Sister, Master, Beauty Sister, Baby Sister and Brother Luo Gang, who are imaginary in marble, for their help in my internship. Thanks to the hard work of my parents for more than 20 years, I also gained some knowledge, and finally went to the society and contributed myself to the society! In the process of writing the thesis, I also got valuable suggestions from many classmates and the support and help from many people in the society. I would like to express my sincere thanks here. Finally, I sincerely thank all the teachers for their training, support and encouragement, and all my friends for their concern and help. I would like to express my heartfelt thanks to all the experts who took time out of their busy schedules to review this article and put forward valuable opinions! I sincerely wish my alma mater Dianchi College of Yunnan University a better tomorrow.