A formation that can withstand all attacks from two Ninth Layer Great Emperors can certainly withstand some attacks from High Tier Heavenly Demons.
Most importantly, this formation might even help them survive the Era Tribulation.
So far, throughout the entire universe, even the Array Masters from those top Holy Lands cannot create a formation that can completely withstand the Ninth Layer Great Emperors.
The formations from those top Holy Lands can at most hold off for a period, but after some time, their formations will still encounter various problems.
However, the formation of the Daxia Dynasty is different. According to intelligence from various sources, when two Ninth Layer Great Emperors from the Shenyue Dynasty attacked the barrier of the Daxia Dynasty, they at most caused some ripples, without leaving any gaps.
The sturdiness of this formation is evident.
