The "two establishment" is a major political achievement of the Party in the new era, and a decisive factor in promoting the cause of the Party and the country to achieve historic achievements and historic changes. Having a strong leadership core and scientific theoretical guidance is the secret of our Party's success in creating a historic cause and an important guarantee for the Party's unity and successful progress. Marx once profoundly pointed out that "a single violist conducts himself, and a band needs a band conductor." Since the 18th National Congress of the Communist Party of China, President Xi has united and led the whole party, the whole army, and the people of all ethnic groups to carry forward the great historical initiative, usher in a new era of socialism with Chinese characteristics, and promote the cause of the party and the country to achieve historic achievements It is the core of the Party, the people's leader, and the commander in chief of the armed forces that are well deserved and expected by all in China, where historic changes have taken place and a well-off society has been built in an all-round way. Why the CPC can and why socialism with Chinese characteristics is good, in the final analysis, is the Marxist line, which is Chinese and contemporary. The more complicated the situation is, the more arduous the mission is, the more ambitious the journey and the greater the goal is, the more it needs the guidance of scientific theory. Achieving the goals for the centenary of the People's Liberation Army in 2027 and more quickly elevating our people's armed forces to world-class standards are strategic tasks for building a modern socialist country in all respects. In the next five years, the central task of our military construction is to achieve the centennial goal of building the military, which is also the will of the Party and the expectation of the people. "Experience the past and follow the present". From history to the future, the "two establishment" is a major historical conclusion drawn from a profound summary of the historical experience of the Party's centennial struggle and its great practice since the 18th National Congress of the Communist Party of China. It profoundly reveals the fundamental reason why the CPC has always grasped the historical initiative, answers "why we succeeded in the past", and points out "how to continue to succeed in the future". On the new journey, we should combine learning