In Zhao's heartland near the Taikou Mt Range.
Quanrong is the ones who made the Zhou Dynasty fell to their knees, starting the Spring and Autumn Warring States Period. Their descendants settled in Ryouyou and ruled independently from any Zhao interference.
But they are in danger, as Enpo and his Enshu Tribe are closing in their gates. They were later captured by Enshu Tribe, and its citizens allied themselves to Yo Tan Wa Army, fed them and treated their wounds.
On Qin's viewpoint, Ryouyou is a key to get more supplies to support the Qin invasion.
On Zhao's viewpoint, Ryouyou is a great puppet against Qin's aggression.