WI: Han dynasty never expands southward

[Mort the Reaper]

Starting in 138 BCE, the Han dynasty expanded southward into what is now Southern China and Northern Vietnam. The effects of this conquest were many: the assimilation and displacement of the Baiyue and Dian, Han Chinese settlement in the area, and more of Southeast Asia being drawn into the Chinese sphere of influence.

What if the southward expansion of the Han dynasty hadn't happened?

 

[Coluber]

There'd be a few more nations in the southern part of that parcel of Asia. I honestly don't know how different their cultures would be from those of China per se, but I suspect a difference similar to the one between southern Europe and northern Europe. That being said, the Mongols would just ruin things anyway.