In truth, the Dark Kirin and the others were not exactly reinforcements. It would be more apt to call them ambushing forces. These forces were part of Chen Feng’s plan. 

Back then, after coming up with this plan, Chen Feng had immediately discussed it with the four Divine Monarchs. The Divine Monarchs had felt sceptical about the plan. At any rate, this plan was too risky. Even if they were to mobilize the entire Boundless Corps, there was still no guarantee that they could kill off their enemies before fully retreating. 

Helpless, Chen Feng had to arrange for more ambushing forces. These forces were the allied forces of the Dark Plane and the others. This time, the Dark Plane, Demon Plane, Blood Plane and Nether Plane had gathered up 800 Gold Immortals for this. In other words, each of them had dispatched 200 Gold Immortals.

In truth, they were fully capable of dispatching some more men. But after discussing it over, they had some scruples about this plan. They feared that this plan would fail. And yet, they were also unwilling to let go such a good opportunity to inflict a big blow on the Immortal Plane....