A nation or a political party must always be at the forefront of the times without theoretical thinking and correct ideological guidance. Having the guidance of Marxist scientific theory is the basis for the CPC to grasp the historical initiative. The reason why our party has been able to achieve significant achievements in various historical periods of revolution, construction, and reform, and to lead the people to complete arduous tasks that other political forces in China cannot accomplish, fundamentally lies in mastering Marxist scientific theory and continuously promoting theoretical innovation in combination with new realities, so that the party has a strong power of truth. Organizations are the form, and thoughts are the soul. To deepen the construction of the Party in the new era, a new great project requires not only shaping but also forging the soul. We must continue to strengthen our theoretical armament, educate and guide party members and cadres to adhere to the study of the party's innovative theories, understand laws, clarify directions, learn methods, and increase wisdom, solidify our foundation and cultivate our spirit, and further lay a solid ideological foundation for the unity of the party. To consolidate and expand the achievements of thematic education, efforts should be made to truly learn, truly understand, truly believe, truly apply, and deepen internalization and transformation. We must have a more conscious and profound understanding of the decisive significance of the "two determinations", enhance the "four consciousnesses", strengthen the "four confidences", and achieve the "two safeguards", ensuring political unity and action unity with a high degree of ideological unity. We must constantly build a solid foundation of faith, replenish the calcium of spirit, and stabilize the rudder of thought. A firm belief in Marxism is the spiritual pillar for Communist Party members to stand up, deal with the world, and perform their duties. We are talking about strengthening the foundation and solidifying the foundation, which is about firmly believing in Marxism, promoting socialism with Chinese characteristics, and communism