The thirty-odd rock giants attacked in rotation, each strike unleashed with all their might. Their attacks came dense and unbroken, and no Golden Immortal-level expert could sustain such high-intensity attacks for so long. Even several Golden Immortals taking turns would not have lasted this long.
Even so, the formation barrier only trembled faintly, showing no sign that it was anywhere near breaking.
The Heavenly Court's immortal army had come in force, so naturally, this was not the extent of their methods.
The immortal army was not in a hurry, either. They merely attacked the passage, smooth as a mirror, while the formation masters closely monitored every fluctuation in the great formation, searching for other shortcuts to break it. After all, if they relied solely on brute force, even if they eventually broke through, they would be unable to fully control the impact of the formation or other unexpected changes. It would still be unrealistic for a large contingent of immortal troops to enter. For the immortal army, merely prying open a crack would not accomplish their goal. They had to open a passage large enough to accommodate sufficient troops; otherwise, killing or capturing Lu Xiaotian would not be easy.
"Saint Dongfang Dan, shouldn't we move somewhere else?" Lü Song could not help asking.
Lu Xiaotian glanced at Lü Song. That fellow had swallowed a demonic coffin, and his dao companion was currently inside it. The demonic coffin was rather sinister. If Lu Xiaotian had not been suppressing it, the might of the great formation would have already descended upon Lü Song.
"There is nowhere to go now except inside this great formation. Even with this Buddhist formation, I can only control part of it. With the formation core still intact, I cannot venture too deep, either. We'll wait. Once the