After Emperor Xiaowen moved to the capital, he vigorously promoted the policy of sinicization. The main contents are as follows: first, it is forbidden to wear Xianbei clothes, and all Han people should wear clothes; Second, it is forbidden to use Xianbei language and speak Chinese instead; Thirdly, Xianbei changed his surname to Han, and Emperor Xiaowen changed the royal family Tuoba to Yuan, forbidding Xianbei people to marry with the same surname, and advocating Xianbei nobles to marry with Han. Fourth, establish a gate valve system in Xianbei, and extend the gate valve system of Han landlords to Xianbei people. Fifth, change Xianbei's official system, laws, etiquette and laws into Chinese system and get rid of Xianbei's old system.

1. Historical Significance and Influence of Emperor Xiaowen's Reform

2. Economic recovery and prosperity

3. The acceleration of the feudalization of political power

4. Ethnic exchanges and integration

The most important significance lies in:

It promoted the great ethnic integration in northern China and laid the foundation for the unification of the country in the Sui and Tang Dynasties.