西周末至东周初，北方游牧族群南下，周王室分封制瓦解，华夏文明遭遇严峻外部压力。本文以白狄—鲜虞—中山国的历史演变为个案，考察春秋战国时期族群冲突经由战争、册封、文化涵化向共同体建构动力转化的具体过程。从地理格局、制度建构、思想演变三个维度分析中华文明突破族群隔阂、趋向内生统一的原由。作者认为华夏文明认同以文化为根基，并非建立在血缘之上。和而不同、协和万邦的“和”思想是中华民族共同体意识形成的重要基因。因此，铸牢中华民族共同体意识是对这一悠久文化传统的当代接续与创造性转化。

From the late Western Zhou Dynasty to the early Eastern Zhou Dynasty, nomadic tribes from the north migrated southward, leading to the collapse of the feudal system of the Zhou royal court and placing the Huaxia civilization under severe external pressure. This paper examines the historical evolution of the Bai Di, Xianyu, and Zhongshan as a case study, investigating the specific process by which ethnic conflicts during the Spring and Autumn and Warring States periods transformed into drivers of community construction through warfare, enfeoffment, and cultural assimilation. Analyzing the reasons behind the breakthrough in ethnic barriers and the trend toward internal unity in Chinese civilization from three dimensions: geographical configuration, institutional construction, and ideological evolution. The author believes that the identity of Chinese civilization is based on culture, not on blood ties. The concept of “harmony in diversity” and “harmony among all nations” is an important gene in the formation of the sense of community of the Chinese nation. Therefore, forging a sense of community for the Chinese nation is a contemporary continuation and creative transformation of this long-standing cultural tradition.