This scholarly investigation delves into the metamorphosis of China's language policies across three distinct epochs spanning over two millennia, tracing from ancient China to contemporary times. Employing a sociolinguistic lens, the analysis elucidates the historical trajectories of these policies, accentuating their theoretical and pragmatic implications, particularly in the realms of linguistic strategies for ethnic minorities and the overarching national language. The derived conclusions highlight a nuanced amalgamation of subjectivity and diversity within these policies, encompassing both the elevation of Mandarin and the preservation of minority languages. By deciphering historical patterns, this study aspires to furnish insights that could inform prospective orientations in China's linguistic policy formulation, set against the evolving backdrop of global interconnectedness, the Belt and Road Initiative, and the nation's overarching developmental objectives.