"When you are strong enough, war will not knock on your doorbell." on the eve of national day, at the national defense lecture hall held by Tsinghua University, the wonderful report of Wu Dahui, professor and doctoral supervisor of the Department of international relations of Tsinghua University, won bursts of applause. Retired college student soldier Wu Lianrong shared his military experience. Photo by Li Nan Since mid September, Tsinghua University has held a series of educational activities of "do not forget national humiliation and approach national defense". By visiting Lugouqiao and the memorial hall of the Chinese people's war of resistance against Japan, carrying out the flag raising ceremony, watching red movies, organizing national defense education Carnival and national defense education lecturer group, Tsinghua University has guided young students to cultivate their feelings of family and country, shoulder the important tasks of the times and inspire them to care about national defense Enthusiasm and motivation for building national defense. "Forgetting history is tantamount to betrayal; forgetting history, tragedy will repeat itself. Our self-improvement should begin with remembering history." at the Chinese people's war of resistance against Japan memorial hall, looking at the vicissitudes of cultural relics and yellow old photos, Li Runfeng, an undergraduate of the College of Humanities and captain of the national flag honor guard, said with emotion that on the 110th anniversary of the founding of Tsinghua University, President Xi encouraged the young generation to set great aspirations, understand great morality, become great talents and shoulder great responsibilities. As young students in the new era, we must bear in mind the instructions of leaders, strengthen our ideals and beliefs, temper our excellent skills, and strive to become a new generation worthy of the important task of national rejuvenation, so that our youth can bloom in struggle and struggle. In the national defense education Carnival of the University, interesting activities such as national defense style display, national defense knowledge interaction and "national defense heart to heart" signature attracted a large number of teachers and students to experience. "We hope that we can approach and understand national defense in a more intuitive way, so as to love and devote ourselves to national defense," said Xiong Kang, a graduate student and retired college student soldier of the Department of chemical engineering who participated in the organization. During the activity, a number of student lecturers of the national defense education lecturer group took the initiative to go into various classes and party and League branches to carry out propaganda. Wu Lianrong, a graduate student and retired college student soldier of the school of finance, shared his military life experience, and the wonderful propaganda aroused strong resonance among the students. In this series of activities, teachers and students have high enthusiasm for participation and strong national defense atmosphere on campus. Deng Yu, deputy director of the Armed Forces Department of the Party committee of Tsinghua University and deputy director of the national defense education and talent training office, introduced: "Patriotism, dedication and the pursuit of excellence are the glorious traditions of Tsinghua University. We hold a series of national defense education activities before and after the national defense education day every year. The purpose is to highlight the important role of national defense education in 'value shaping', rooted in the national defense concept of the whole people, and strive to deliver more pillars and talents for the cause of national defense." (outlook new era)