This Demon General had originally signed an agreement with Tu Ba of the Red Phosphorus Province to attack the Charioteer Nation from both the left and right sides.
It was just to test the waters and to understand the actual strength of the Charioteer Nation.
Although they all were somewhat reluctant to share the Charioteer Nation among the other forces, with Xiao Qing holding fort, and even though Ma Lin wasn't the best, he was still a Demon General. If these two decided to strike with full force, the others feared they would end up at a disadvantage.
However, the Demon General from Milon Principality had never imagined that the elite troops he sent out would be completely annihilated halfway to the Coldwind Fortress, and the commanding general had no idea how they lost or how strong the enemy really was.