The four of them had no reason to rebel against Fei Yang Kingdom.
Coupled with the northern tribe that might attack them, they basically have common enemy with Fei Yang Kingdom. For Fei Yang Kingdom to thrive, they needed to guard the border while the soldiers on the border had long received this task from generation to generation.
So this might be the few reasons why Emperor Yang Zhou decided to let Song Yun Xiang came and left the stage to them.
"I see…" General Yang murmured.
He felt quite lucky that the scheming on the frontline was not very severe. Listening to his brother, he felt that his own position was actually quite perilous. The feeling of having others threatening him was really not good.
Minister Yang passed a look at his brother and then shook his head.