1 16 speeches, "school" appeared 479 times and "alma mater" appeared 4 times16 times. When obtaining the keywords of a single article, we extract the top 50 words by calculating the tfdif values of words in each article (tfidf values represent the importance of words in the document). Among them, the first key word in 5 1 article is the name or abbreviation of the school, and the history, motto and alumni of the school have been mentioned many times, which to some extent reflects the expectation of the school for the psychological belonging of graduates, hoping that the genes and spiritual temperament of the alma mater can be better passed down. Gong Ke, president of Nankai University, wrote "Nankai" at the graduation ceremony. What is this? In his keynote speeches, such as Nankai is the responsibility of the country and the nation, the guidelines for dealing with people, and the cultivation of public energy, he encouraged Nankai students to put their lofty aspirations permeated with the ideal of home and country into practice.
The motherland appeared 426 times, the responsibility was 209 times, the feelings were 17 1 time, and the persistence was 154 times. In their messages, the principals encouraged graduates to bravely shoulder the responsibility of the times at the critical stage of realizing the great rejuvenation of the Chinese nation, and to combine personal struggle with the future of the country, the destiny of the nation and the happiness of the people in the great historical process of realizing the goal of "two hundred years". Dou Xiankang, president of Wuhan University, sent a message to graduates: "Always keep a China heart and take the initiative to shoulder the responsibility of national rejuvenation", "Dare to be the first to take the initiative to take the responsibility of promoting scientific and technological innovation" and "Embrace the world and take the initiative to take the responsibility of influencing the world". Liu Wei, president of China Renmin University, told graduates to "stick to honesty", "establish humanistic spirit" and "cultivate feelings of home and country". Zhang Rong, president of Shandong University, gave a speech entitled "Be a Responsible Alexander", and sent the graduates to the last lesson of the university. Wang Cheng, president of Lanzhou University, sent a message to all the graduates, saying that he would "inherit the beauty of Lanzhou", "cherish the Chinese dream" and "establish the ambition of the world".
The statistical results show that "innovation" appeared 252 times, "thanks" appeared 2 14 times, "science and technology" appeared 13 1 time, and "initial heart" appeared 94 times. Words such as Internet, cloud computing, big data, new energy and new materials appeared in the speeches of principals. They encourage students to focus on the forefront of the world's scientific and technological progress and keep in mind the mission of strengthening the country through science and technology and serving the country through scientific research. Ning Bin, president of Beijing Jiaotong University, shared his understanding of "initial heart" with graduates at the graduation ceremony. In his view, personally, "the initial heart stems from the determination to pursue dreams", "the perseverance of diligence and sureness", "the sincerity of respecting rules" and "the sincerity of being loyal to oneself", and I wish graduates "take the farthest road, be the truest self and live the best life".
Key words such as "understanding", "warmth", "sincerity", "enthusiasm", "persistence", "pattern" and "health" reflect that the school wishes students not only a bright future, but also a sound personality and a happy life. Xu Fei, president of Southwest Jiaotong University, confided with the graduates that "the three most important coupling relationships in life are people, people and things, and people and themselves". Chen Qun, president of East China Normal University, hopes that students can "pursue a simple and rich life and work realistically and romantically." Li Yuanyuan, president of Jilin University, gave three instructions to graduates: "Walk with the times with the heart of learning, get along with others with sincere respect, and carve yourself with indifference".
It is hoped that graduates will bear in mind the entrustment of principals and be social elites with ideals, innovations and responsibilities.