He Ao stood amid the dust clouds from the collapsed concrete, watching everything before him.
Actually, apart from tearing down the wall, there was another option he had, which was the "Phalange Fossil," otherwise known as the "Knocking Stone," he had obtained from Bright.
Its only effect was to pass through any "doors" below the level of an Angel.
However, using it to pass through a door required the user to pay a certain price.
Besides that, the stone was filled with densely packed patterns carved by some special method, somewhat resembling the markings on the bodies of people from the Eternal Ancient Teachings and faintly retaining the power of Eternal Radiance, perhaps even modified to have a few other "uses."
But compared to paying the price to use an Extraordinary Item, demolishing the wall was still a more convenient and quicker method.