我国“十五五”规划建议指出要“集中力量办好自己的事”，强调的是社会主义现代化建设必须发挥社会主义制度优越性。内蒙古自治区的形成和发展是表现我国社会主义制度优越性的典型案例。内蒙古的辽阔政区是在党的领导下形成的，能够更好地发挥制度优越性；内蒙古实现从农牧业为主向工业经济转变，是充分发挥社会主义集中力量办大事的制度优势的结果；在新时代中国特色社会主义思想指引下，内蒙古在我国北方生态安全、北疆安全稳定、能源与战略资源、农畜产品生产、向北开放、民族团结等方面取得突出成就，为我国现代化建设作出重要贡献。新征程要求我们继续发挥社会主义制度优越性，集中力量办好大事。

The Proposals for the 15th Five-Year Plan of China emphasize the need to "concentrating on Accomplishing Our Own Tasks," highlighting that the advancement of socialist modernization must leverage the superiority of the socialist system. The formation and development of the Inner Mongolia serve as a typical case demonstrating the superiority of China's socialist system. The establishment of Inner Mongolia's vast administrative area under the leadership of the Communist Party of China has enabled the full realization of institutional advantages. The region's transition from an agrarian and pastoral economy to an industrial economy exemplifies the institutional strength of socialism in mobilizing resources to accomplish major tasks. Guided by Xi Jinping Thought on Socialism with Chinese Characteristics for a New Era, Inner Mongolia has achieved remarkable progress in ensuring ecological security in northern China, maintaining security and stability in the northern frontier, developing energy and strategic resources, boosting agricultural and livestock production, enhancing opening-up to the north, and fostering ethnic unity, thereby making significant contributions to China's modernization drive. The new journey ahead requires us to continue leveraging the superiority of the socialist system and concentrate efforts on accomplishing major tasks.