While this blow injured the Vajra Region Lord considerably, attacks from other cultivators continued to land on the Battle Matrix of the Rocks. Inevitably, the matrix began to tremble, and fractures started to appear.
Presently, the Battle Matrix of the Rocks was a united entity. However, when all the cultivators within the matrix gathered their strength to attack, most of their power was concentrated on attacking. Though the power to attack skyrocketed, it was at the expense of their defense, hence its weakened stability.
Of course, there was no such thing as a perfect battle matrix in the world, and any method had its own inherent weak points. However, to injure a supreme cultivator, like the Vajra Region Lord, with a single blow meant that it must have been something that possessed a great deterring force.