Zhou Tian had already made preparations on his end. Seeing that he had driven away a part of the monsters, he began to prepare to deal with the remaining ones.
Honestly speaking, the undead monsters could always occupy this territory because of the special terrain and effects of the Undead Territory. But the main reason they could avoid being annexed by other monsters was the existence of a bone dragon in their territory.
Zhou Tian had already experienced the power of the bone dragon; with its formidable power, Zhou Tian believed that even advanced monsters without proper preparations, would gain no advantage against the undead.