"The essence of the troops is not the quantity, but the quality." Following the path of elite troops with Chinese characteristics, stressing quality, stressing real combat effectiveness, and developing fewer but better troops that are truly effective are the basic experience and important principles for building and running our army. The art of war says that "a small number of soldiers are not enough to defend", and it also says that "a large number of soldiers are not enough.". The dialectical relationship between the quantity and quality of the army has been the focus of attention of strategists since ancient times. Whether an army is strong or not depends not only on its scale, but also on its quality. The advantage in quantity can make up for the defect in quality, while the advantage in quality can make up for the deficiency in quantity. The two are not only organically linked, internally unified, but also complementary and mutually transformed. In the journey of deepening the reform of national defense and the armed forces, President Xi deeply grasped the development and evolution trend of the new military revolution in the world, focused on seizing the commanding heights of the future military competition strategy, committed to building a modern military force system with Chinese characteristics, and clearly put forward that "we should adhere to reducing the number, improving the quality, optimizing the size and composition of troops, and building a lean and efficient modern standing army". This important exposition has grasped the winning mechanism of modern war, adapted to the development and changes of national security strategy and military strategic needs, and scientifically answered the era issue of implementing quality building and making our army more capable and efficient. President Xi stressed: "both history and reality tell us that if an army lags behind the times in terms of scale, structure and force composition, and lags behind the development of war forms and modes of operation, it may lose its strategic and war initiative." The relationship between the quantity and quality of the army is changing with the evolution of the war form. Every minute counts for every minute in information warfare. The characteristics of being lean, integrated, miniaturized, modular and versatile are becoming more and more prominent. Only when the personnel are capable can they move quickly; The scale is optimized and the command is flexible. Only in accordance with the requirements of adjusting and optimizing the structure, developing new forces, straightening out major proportional relationships, and reducing the number and scale of the army, can we make the army more appropriate in scale, more perfect in function, more reasonable in structure, and more scientific in composition, and then we can forge a strong force of elite troops who can fight when they are called upon, who can fight when they come, and who will win when they fight. Otherwise, the once powerful army will eventually fall behind and even be vulnerable. There are not many soldiers but good ones. President Xi pointed out that the key to fighting and winning with elite troops lies in the word "elite". A strong army does not depend on the number of heads. "Precision" is not only a requirement for quantity, but also a requirement for quality. "Refinement" means enrichment but not overstaffing, synthesis but not dispersion, versatility but not singleness, and flexibility but not dullness. Appropriately reducing the number of military personnel will not reduce combat effectiveness, but also further optimize the structure, effectively use resources and improve operational efficiency. At the Conference Commemorating the 70th anniversary of the victory of the Chinese people's war of resistance against Japanese aggression and the world anti fascist war, President Xi Jinping solemnly announced that China would reduce the number of its military personnel by 300000. The purpose of this major decision is to use structural and functional optimization to guide the adjustment of scale, promote the transformation of our army from quantity and scale to quality and efficiency, from manpower intensive to science and technology intensive, and the development of troop formation to enrichment, synthesis, versatility and flexibility. "Prune the numerous and simplify the three autumn trees, and lead the difference and mark the new February flowers." To deepen the reform of national defense and the armed forces, we should not simply withdraw, merge, reduce and reform, or simply add or subtract. Instead, we should increase while reducing, and increase while reducing. "It is better to be less, but better.". The whole army adheres to the principle of streamlining and efficiency, significantly reducing the number of cadres, expanding the number of "officer to soldier" posts, changing the scope of non active personnel, streamlining the staffing of organs at all levels, reducing redundant personnel, reducing the number of leadership positions, and significantly reducing the number of old equipment units. Correspondingly, the number of combat troops has increased rather than decreased. New combat forces such as strategic early warning, sea defense, long-range strike, strategic projection and information support have been enriched and strengthened. A joint combat force system with elite combat forces as the main body is taking shape. The new structure has given birth to new combat power and forged new swords. Addition does not necessarily strengthen and subtraction does not necessarily weaken. Through this overall revolutionary change, our army has further emancipated and developed its combat effectiveness, further emancipated and enhanced its vitality, fundamentally changed the long-standing force structure of land warfare, changed the force distribution of territorial defense, changed the winning mode of heavy army groups and winning by quantity, and effectively realized the optimization of scale through structural adjustment, the promotion of flexibility and versatility through fat elimination and bone strengthening, and the promotion of combat effectiveness through slimming down and strengthening, The troops' ability to carry out tasks is more diverse and their operational adaptability is more extensive. President Xi pointed out that whether military strength can become a means to ensure the minimum level depends not only on quantity, but also on quality. China has a large area, a long border and a complicated security situation around it. The military needs to maintain a certain scale to effectively perform its missions and tasks. At the same time, only the best soldiers can win. The strike means of modern war are becoming more and more "accurate and energy releasing", the combat style is constantly "mixed in the whole area", and the quality factor has leapt to the dominant position in the construction of combat effectiveness and the battlefield game. We must keep a close eye on changes in science and technology, wars and adversaries, scientifically grasp the dialectical relationship between quantity and quality, unswervingly follow the road of elite troops with Chinese characteristics, plan the quantity and scale, strive to improve the quality level, substantially increase the proportion of new quality combat effectiveness in new areas, and better shoulder the mission of safeguarding national sovereignty, security and development interests. (outlook new era)