The sense of community for the Chinese nation refers to the understanding and reflection of the commonality of all ethnic groups on the premise of recognizing individuality. To forge a strong sense of community for the Chinese nation, we should accurately grasp its meaning, and to this end, it is necessary to adhere to the Marxist method of analyzing contradictions. On the one hand, it is necessary to see the diversity and differences among different ethnic groups, namely their individuality; on the other hand, it is also necessary to see the unity and commonality among different ethnic groups, ie. their commonality. From the principle of dialectical relationship between individuality and commonality among these ethnic groups, individuality contains commonality, and commonality resides in individuality; individuality is the foundation, and commonality governs and dominates individuality; individuality is objective existence, and commonality is the mainstream and the general trend of history. The commonality among ethnic groups is manifested and realized through symbiosis, consensus, common action, common interests and common sentiments. In specific, symbiosis leads to consensus, consensus points to common action, common action realizes common interests, common interests generate common sentiments, and common interests and common sentiments, in turn, further promote, maintain and consolidate symbiosis, consensus and common action. The unity of these five commonalities jointly supports and manifests the sense of community for the Chinese nation, which is the basic dimension for us to grasp the meaning of the sense of community for the Chinese nation and its generation. The practice of forging a strong sense of community for the Chinese nation in the context of the logic of the five commonalities is subject to multiple interpretations.