First and foremost, starting with the significance of national defense, the keynote speaker profoundly elaborated on the key role of national defense for national stability and people’s happiness. Looking back in history, China suffered aggression from foreign powers because of its weak national defense. Meanwhile, countless martyrs have written a magnificent chapter of struggle with their lives. Therefore, through the analysis of historical events, students gained a deeper understanding of the need for a strong national defense.

Furthermore, the keynote speaker introduced in details all aspects of modern national defense, including military power, defense science and technology and defense education. Moreover, combined with the current international situation, the keynote speaker analyzed the challenges and opportunities facing our country, stressing that in the complex and changing international environment, we must always remain vigilant and constantly strengthen national defense. 

In conclusion, the successful implementation of the national defense knowledge lecture not only popularized national defense knowledge for students, but also stimulated everyone’s patriotic enthusiasm and sense of responsibility. More noticeably, it’s believed that in the coming days, we will pay more attention to the cause of national defense and contribute our own strength to the prosperity of our country.