Abstract: As an important carrier of ethnic interactions and exchanges, the trajectory of the intermarriage circle provides an observational perspective for the understanding of the practice of localization of the Chinese national community consciousness. Through the field research of Dong village Y in Qiandongnan Miao and Dong Autonomous Prefecture in Guizhou Province, the changing picture of Dong intermarriage circle, the influencing factors, and the intrinsic relevance of ethnic intermingling and mingling are analyzed. Before the reform and opening up, Dong intermarriages mainly took the form of village, ethnic, hierarchical, and clan exogamy, forming a closed and stable intermarriage circle. Under the background of mobile modernity, Dong intermarriage circle is deeply intertwined with multiple factors such as differences in economic development, reforms in the household registration system, changes in the concept of marriage and love, expansion of social communication, and cultural habits, presenting the“inward spiral”and“outward spiral”. The intermarriage circle is deeply intertwined by multiple factors, such as the difference in economic development, the reform of the household registration system, the change of the concept of marriage, the expansion of social exchanges, and the constraints of cultural practices, presenting a situation of “inward scrolling” and “outward expanding”. The expansion of the intermarriage circle has broken down geographical restrictions, constructed ties across ethnic boundaries, promoted the spatial, economic, cultural, social, psychological and other aspects of the interlocking coupling of various ethnic groups, strengthened the sense of identity and belonging to the Chinese national community, and provided a concrete and sustainable practical path for forging the sense of community of the Chinese nation.

Key words: Dong ethnic group, intermarriage circle, interaction and intermingling of ethnic groups, sense of chinese national community