Because Dou Rong knew that the world was still surnamed Liu at that time, if he rashly proclaimed himself, it would probably only be counterproductive. What's more, Dou Rong is not a man with a strong desire for power, and he appreciates Liu Xiu very much, so he is so willing to give this 4,000-mile country to Liu Xiu for free. When it comes to famous officials in the Eastern Han Dynasty, Dou Rong comes to mind first. In the era of talented people in the Eastern Han Dynasty, Dou Rong was not greedy for merit, and his overall behavior made him famous in history. In order to unify the world, he gave Liu Xiu the 4,000-mile mountain he had laid for free, which was admirable.

Dou Rong didn't work for Liu Xiu at first. He was born in a rich family and his grandfather was a satrap. He worked under Wang Mang and took part in some activities to suppress the rebellion. After follwed's death, Dou Rong led his men to take refuge in Zhao Meng. Zhao Meng reuse Dou Rong, appointed him as the stag satrap. However, Dou Rong believes that his family has deep roots in Hexi and is also very prestigious. Hexi area has fertile land and dangerous terrain, which is conducive to resisting any changes in the world. So, he resigned from the position of Julu and stayed in Hexi.

In Hexi, due to the fact that his ancestors were all officials here and his own ability, Dou Rong suggested farming and sericulture, recruiting conference semifinals and training the army, which was appreciated by everyone and loved by the people, and had a harmonious relationship with ethnic minorities. The army on the other side of Hexi gradually surrendered to Dou Rong, making Hexi an oasis in troubled times, attracting a large number of refugees and further consolidating Hexi's reputation. Unwilling to split for the future of Hexi, combined with the formal analysis at that time, he thought that the world was still Liu's. Therefore, Dou Rong will decide to make concessions to Liu Xiu.

Dou Rong's submission greatly enhanced Liu Xiu's strength and made him very happy. Dou Rong's outstanding talents and many contributions made him more appreciated. Liu Xiu gave him a very generous reward and even married Dou Rong, which brought long-term honor and power to the whole Dou Rong family.