Leaving aside the Wizard Alliance's scheming and maneuvering with the Spring Ancestor World Cluster, this unprecedented Demon-Hunting Expeditionary Legion of the Wizard World launched forth with unprecedented thunderous might under the personal command of the Second-generation Wizard King!
That said, in this era, the Spring Ancestor World Cluster was, in the eyes of the Wizard Alliance, at most another Dark Great World. Perhaps its overall strength was somewhat greater than the Dark Great World's, but its cohesion was far inferior. If it clashed head-on with the Wizard Alliance, it would be like an egg striking a rock. This Demon-Hunting Expeditionary Legion alone even possessed the power to crush the Spring Ancestor World Cluster!
At the same time, as Eternal Spring Ancestor had said, this Demon-Hunting Expeditionary Legion contained the entire essence of the Wizard World.
Rumble, rumble...
Perhaps it was an adverse effect of excessive modifications made under technically immature conditions after the Stellar Orbital Cannon had been installed. As the Eternal Sky City advanced through the void by inertia, it actually emitted a rumbling drone. This was caused by instability in its power structure, utterly unlike the stability philosophy of the world-war fortress command platform in its original design.
Like a metal world forged by conscious will, the Eternal Sky City was the pride of generations of wizards across long eras. It carried too much history and bore too many hopes. Wizards had always done everything possible to make it stronger, more perfect, yet true perfection had never existed. As it grew excessively powerful, it had also gradually become bloated.
Surging magical power converged to form the Eternal Sky City's Wizard Shield, overlaid with a layer of AT Force Field. It was equivalent to two layers of World Garment rules artificially created by wizards, pulverizing the fragments of Void