In just a few years, China's electrolytic aluminum production capacity has shifted from the north to the southwest, bringing cost, environmental, and strategic benefits, and reshaping the heavy industry landscape. Regions like Yunnan leverage hydropower resources to reduce production costs, decrease carbon emissions, enhance international competitiveness, and establish a complete industrial chain, promoting economic development and ensuring industrial security. This industry adjustment is not only an economic action but also a key measure to protect the country's strategic advantages.