President Xi Jinping definitely pointed out in his speech that:“At the fundamental level, the capability of our Party and the strengths of socialism with Chinese characteristics are attributable to the fact that Marxism works”. This penetrating judgment sums up the latest experience of the innovation and development of Marxism in the new era in the past ten years from the perspective of the era. It also points out the truth connotation of the “ontology” action of Marxism from the perspective of theory, as well as manifesting the ideological implication of the “work” of the Sinicization of Marxism in the era from the perspective of practice. Deeply understanding and grasping the rich connotation of the two “works” at the fundamental level will not only help us to grasp the milestone significance of the new decade, help us to deeply understand the scientific nature and truth of the Marxist theoretical system, but also help us to comprehensively and systematically grasp the basic experience and regular understanding formed by the CPC people in the process of promoting and expanding the Sinicization and modernization of Marxism in China.