The great practice of reforming and building a strong military in the new era - Overview of deepening national defense and military reform under the leadership of the Central Committee of the Communist Party of China and President Xi Jinping. Since the birth of the People's Army, under the leadership of the Party, from small to large, from weak to strong, and from victory to victory, the pace of reform and innovation has never stopped. Since the 18th National Congress of the Communist Party of China (CPC), the CPC Central Committee and President Xi Jinping have placed deepening the reform of national defense and the military at a prominent position in the overall work of the Party and the country. They have put forward a series of major ideas, made a series of major decisions, deployed a series of major tasks, comprehensively implemented the strategy of strengthening the military through reform, and led the whole army to advance reform with great strides. We will deepen the reform of national defense and the armed forces in a big way, and move steadily and quickly. After the reform, the people's armed forces will take on a new look in their system, structure, pattern and appearance. In the late autumn of 2021, the Resolution of the Central Committee of the Communist Party of China on the Significant Achievements and Historical Experience of the Party's Centennial Struggle adopted at the Sixth Plenary Session of the 19th Central Committee of the Communist Party of China fully affirmed the historic achievements made in deepening the reform of national defense and the military, and called it "the most extensive and profound reform of national defense and the military since the founding of New China". Grasping the trend of the times and making the strategic decision to reform and strengthen the military is an inevitable test of the times, a once-in-a-lifetime historical opportunity, and a strategic plan to shape the future. Since the 18th National Congress of the Communist Party of China, socialism with Chinese characteristics has entered a new era, and national defense and military building has also entered a new era. In the face of the overall situation of the great rejuvenation strategy of the Chinese nation and the unprecedented changes in the world in a hundred years, as well as the deep-seated contradictions and problems that have long constrained national defense and military building, President Xi Jinping took the situation into account, took the overall situation into account, and decisively made the strategic decision to reform and strengthen the military. This decision came from a deep concern for national security. In the winter of 2012, President Xi sailed in a warship at Shekou Port, Shenzhen, Guangdong Province. On the coast of the South China Sea, President Xi concluded that realizing the great rejuvenation of the Chinese nation is the greatest dream of the Chinese nation since modern times. It can be said that this dream is the dream of a strong country, and for the military, it is also the dream of a strong military. More than a hundred years ago, great powers invaded from the sea. Modern China, which had missed opportunities for reform time after time, gradually fell into the abyss of poverty and weakness, internal and external troubles. At an important military conference, President Xi profoundly pointed out that "once the military backwardness is formed, it will have a fatal impact on national security. I often look at some historical materials in modern China, and it hurts when I see the tragic scene of backwardness being beaten!" A strong country must strengthen its military, and a strong military can ensure national security. Without a strong army and a solid national defense, the dream of a strong country cannot be truly realized. This decision comes from a deep grasp of the military revolution - looking around the world, the new military revolution is surging, and the armies of the world's major powers have embarked on the road of transformation. Only the reformer advances, but the innovator is strong. President Xi encouraged the whole army: "The new military revolution has provided us with a once-in-a-lifetime opportunity. We should seize the opportunity and make progress. We should not only catch up with the trend and the times, but also strive to stay ahead of the times." This decision comes from the strong responsibility of facing the problem directly. After the founding of New China, our army has made 13 comparisons