Han Fei expected that the Soul Sealing World wouldn't be conquered so easily. It seemed that it was a wise choice to take so many kings with him.
In Han Fei's estimation, Huang Jingyuan might be able to fight two alone in his territory.
Han Fei even suspected that there might be a second Sky Opening realm cultivator in the Soul Sealing World. However, if that was the case, he wouldn't have been able to escape back in the Wild Abyss. From what he knew of the Soul Sealing World, it seemed that they existed only to kill Xia Xiaochan. How could they let go of such a great opportunity? That was why Han Fei dared to take this risk.
However, he didn't expect that although there was no second Sky Opening Realm cultivator in the Soul Sealing World, there were seven kings.