To say that the Xianbei, Huns, Wuhuan, and Qiang and Hu currently have that capability, Chen Xi would not believe it at all. The Han Dynasty had suppressed them for hundreds of years, to the point where their spirit was crushed, leaving them only capable of petty thieving that couldn't make it to the stage. The only ones daring to face off directly against the Han Dynasty were the Northern Huns.
Even though the Southern Huns and Northern Huns were initially one family, both under the name of the Huns, with no distinction of north or south, they were successfully defeated during the reign of Emperor Xuan of Former Han through three generations of Han Dynasty's fierce battles.