Ibro didn't look back towards Gorsag as he ordered:
"Then begin immediately."
Gorsag didn't move, but Erond and the alpha death knight beside him moved. In the upcoming minutes, a large number of cultivators soared high in the sky.
Their appearance had caused more noise at the city side. On that side, four people appeared flying in the air. Ibro didn't need to know their identities as they were the four he guessed before.
Nearly 5k cultivators were facing only four. These four weren't alone, as there were also a lot of towers that could threaten these cultivators.
That was the reason why these 4 NPCs stood motionless above the center of the city. They didn't move to stop the newcomers. Ibro knew how intelligent the NPCs were, so he didn't underestimate them.