The US dollar has enjoyed a long-standing dominance as the global reserve currency, serving as a medium of exchange, store of value, and unit of account for international trade and financial transactions. However, the economic rise of China and the growing internationalization of the Chinese yuan have posed significant challenges to the US dollar's supremacy. This research paper examines the implications of a rising Chinese yuan on the global reserve currency system, highlighting the potential challenges and opportunities that arise as a result. Through an analysis of historical trends, economic indicators, and policy developments, this paper provides insights into the future trajectory of global reserve currencies and the potential shifts in the international monetary system.