What Aldrian saw was the horrific condition of the Pride devil. There was no trace of his once handsome, youthful face. His head was already bald, covered in severe burn wounds, and his face was disfigured in the same way.
As for his body—
He had already lost the lower half, and burn wounds covered his entire skin. Even his flesh looked cooked under the heat of the flame. He had also lost one of his arms from the shoulder.
Seeing the Pride devil's condition, Aldrian knew the man was dying. He would die on his own soon unless he could heal himself, which he doubted.
"This man truly used everything until the end. He even resorted to his forbidden technique, breaking his limit at the cost of damaging his dantian," he thought.
He could sense that the Pride devil's dantian had already been shattered, causing him to lose all of his cultivation. Until the end, he kept destroying that colossal rock, even though he had already used every last bit of his energy.