The reason Ling Tian and the others couldn't break out now was that their cultivation levels were far lower than those of the cultivators surrounding them, and there were simply too many enemies. Facing attacks from an Arrow Formation made up of countless cultivators, they could only avoid its sharp edge.
But once Ling Tian and the others raised their cultivation to match those surrounding the Sacred Ruins Abyss—or even surpass many of them—they would naturally have far fewer scruples. In particular, they could rely on a complete grand formation to defend themselves. A formation incorporating three kinds of array-pattern restrictions would be more than enough to keep them safe, or at least protect them for a long time. During that time, if Ling Tian and the others unleashed their full power, they would surely be able to kill many cultivators.
And as Ling Tian and the others killed more and more cultivators, fewer and fewer would remain to attack them, so the pressure they faced would steadily ease. By then, it might even be possible to keep the grand formation intact indefinitely. They might even have a good chance of tearing open the encirclement and forcing their way out. Ling Tian and the others had done something like that before: back in the Extreme Ice Plains, they had broken through an encirclement that included many cultivators far stronger than themselves.
If they had managed to break out back then, there was even less reason to doubt they could do so now. After all, once Ling Tian and the others had cultivated the Sacred Heart Sect's and Thunder Strike Sect's cultivation arts and secret techniques, their strength among cultivators of the same rank had risen tremendously.
Of course, Ling Tian wouldn't resort to that unless he had no other choice.