Choose a for the second question. I'm not sure because since the end of the Three Kingdoms, the southern regime has been deeply influenced by Taoism and metaphysics, and its ideological culture is romantic, while the ideological culture of the northern minority regime is relatively simple and realistic, but it has also absorbed the romantic style. Of course, it is also a major feature for southern literati to get together for political satire.

In the third question, the leaders of ethnic minorities in the chaotic China period were given two names, one was Khan and the other was the Great. After they invaded the Central Plains, they absorbed some characteristics of the Han regime and implemented the Hu-Han dual-track system.

The fourth topic is D. Xianbei people are nomadic people who rose in the Daxinganling area of Northeast China after Xiongnu.

I don't know the fifth question.

Question 6: You should choose A or C. If there is something wrong with this question, it means that you have not learned Chinese well. The famous Taikang lost his country in history, and Hou Yi was the leader of a poor family in Dongyi. Taikang is the son of Xia Qi. In the absence of Taikang, it was Hou Yi who invaded the capital of Xia Dynasty, but Hou Yi was not the king of Xia Dynasty. However, this question is about the people who broke the capital of Xia Dynasty. . If the capital was breached when the Xia Dynasty was in power, it would naturally be Taikang.