The Xianbei people are an ancient northern nation. Before Emperor Xiaowen of the Northern Wei Dynasty moved the capital to Han, they had been traveling across the north. They continued for hundreds of years. After moving the capital, their clothes and customs were similar to those of the Han people, which promoted the progress and civilization of the Xianbei people. and national integration, which is a major contribution to the great integration of the Chinese nation.
But it was a disaster for the Xianbei people themselves. After the capital was moved, the elite soldiers and generals who originally defended Rouran in the six northern towns were gradually forgotten. In the past, the nobles' children went to the border towns to enlist in the army and gained promotion with their military exploits. The concept gradually changed to despise the border soldiers in the six towns, which directly led to the major mutiny in the six towns in the north and finally the death of the Northern Wei Dynasty. At the same time, the Sinicized Xianbei people gradually lost their martial spirit, just like the children of the Eight Banners. However, Gao Huan and Gao Yang, who retained their Xianbei characteristics, were bastards, but they still fought on the battlefield and conquered half of the country.
Please take a look, is there still Xianbei today? That's the best answer. Of course, changing Xianbei's surname to Han has many other impacts, such as promoting the development of agriculture and animal husbandry, etc., so I won't list them all here.