Where is the ancient slave country today?

During the Qin and Han Dynasties in China, the Huns once had a very powerful khanate, and the king became Khan. However, due to the rise of Emperor Wu of the Han Dynasty, Xiongnu eventually declined. As far as the territory at that time is concerned, Afghanistan in the east of Heilongjiang Province now includes Gansu, Qinghai, Ningxia, Shaanxi and Inner Mongolia.