Go to barbarians to build their capital, and then (then) decide the chaos in the world, then practice rites and music, and promote the system. This is a sentence that Sima Guang commented on Emperor Xiaowen, saying that Emperor Xiaowen promoted Xianbei Sinicization, removed the outdated customs of barbarians, promoted Sinicization, changed the traditional Xianbei surname to Han surname, moved to Luoyang, settled the chaos in the world, and then revised various cultural systems to publicize these.