The barrels were filled with the Bay Territory's specialty, Fierce Fire Oil!
The flames on the moving city's walls below were instantly spreading into terrifying blazes covering the walls as soon as they touched.
Facing these intangible and mindless flames, even the well-prepared mutant machinery had no good way to attack.
The persistent scorching flames endlessly burned the immobile mutant machinery.
Fortunately, they were not flesh bodies; otherwise, they would have completely collapsed under the scorching fire.
Even so, a significant portion of the mutant machinery's bodies were damaged by the high temperature and the blaze.
Many limbs and mechanical structures fell into a state of malfunction.
Numerous firing ports on the walls, surrounded by flames, exploded one after another and quickly ceased firing.
Rumble!
Another round of blazing volleys.
The large shells, calibrated to perfection, demonstrated even more formidable destructive power.
