Faced with the joint assault by two Flame Devil Kings, the pressure on Jade Sea City was immense.
As Yan Zhaoge had predicted, the Flame Devils had not known beforehand of Jade Sea City's Lord, Song Wuliang, currently being in death seclusion.
With none of them having seen Song Wuliang on the Outer East Sea earlier, the Flame Devils had thought that he was mostly likely still at Jade Sea City.
A Jade Sea City and its Jade Sea Limitless Grand Formation presided over by Song Wuliang was not something that two Flame Devil Kings would be able to break through.
At least, it was still impossible for the two Flame Devil Kings who were currently attacking Jade Sea City.
However, these two Flame Devil Kings had still come to Jade Sea City.
One of the reasons for this was indeed that the concealment technique used by the Flame Devils this time possessed a limit, and was insufficient to support them all the way over to the mainland.