Bai Sha studied the City-Protecting Grand Formation and, after a moment's thought, said, "Let's attack Cloud Cang City's City-Protecting Grand Formation first and see how it holds up."
Everyone nodded.
All the Golden Core cultivators, along with the Fire Crow Guard, attacked together, unleashing an Overwhelming Barrage.
The azure grand formation shook violently.
A quarter of an hour later.
The Fire Crow Guard disciples had nearly exhausted their magic power and could no longer sustain their combined secret art.
The smoke cleared, revealing not a single crack in the area of the grand formation they had attacked.
"So this is a fourth-tier grand formation. It's simply beyond the ability of Golden Core cultivators to break."
Even though their combined destructive power rivaled that of two early-stage Nascent Soul cultivators.
Their attacks were, after all, less effective than those of Nascent Soul cultivators.
It came down to the efficiency of breaking through a surface at a single point.
"Stop. If we expend too much magic power, the people inside will be the ones reaping the benefits."
Bai Sha sighed softly, then told Jian Shisan, "Sect Master, send disciples back with news of the battle here.
"Hopefully, the Grand Supreme Elders will come to support us soon."
"Understood, Senior Brother Bai Sha."
Even if the Golden Core cultivators inside Cloud Cang City stayed behind their defenses and refused to fight, everyone from the Celestial River Sword Sect would have to launch a Frenzied Assault for over half a month before they might break through.
And during such a prolonged assault, Foundation Establishment cultivators could contribute nothing, while even Golden Core cultivators could not sustain it.
Thus.
It was practically an unsolvable problem.
Bai Sha and the others returned to camp to rest and recover.
In this battle.
Cloud Cang City had kept