Silver Sheath Worms were demonic insects gifted with the ability to devour metal and swallow stone.
When Qin Fengming had first encountered Silver Sheath Worms, the Mature Form Silver Sheath Worms had literally devoured an enormous area of hard underground rock, turning it into a network of underground tunnels extending for hundreds or even thousands of miles.
They had done so to search for some exceptionally hard Smoke Crystal Stones.
Without melting them, they had simply chewed through the Smoke Crystal Stones. There was no difference between that and cleaving them with a magic treasure.
The toughness of Smoke Crystal Stone might not adequately demonstrate the sharpness of a beetle's mouthparts, but Gangyan Sand Crystal was more than enough to show how terrifyingly powerful the Silver Sheath Worms' bites were.
Back in that underground magma region, the Silver Sheath Worms, which had yet to advance, had directly chewed through a large quantity of Gangyan Sand Crystal. Gangyan Sand Crystal was an astonishingly tough material that even Qin Fengming, with all his strength poured into the Glimmering Firefly Sword, could not damage in the slightest. It was a material usable even by Profound Spirit and Mahayana cultivators.
The scorching heat contained within Gangyan Sand Crystal was in no way inferior in level to the freezing aura released by the Ice Louse Insects at that moment. Qin Fengming had naturally anticipated that the Silver Sheath Worms would be able to withstand the Ice Louse Insects' attacks.
Watching the bodies of over a thousand Ice Louse Insects occupying half the ice cave being surrounded and savagely torn apart and chewed by dozens of Silver Sheath Worms, Qin Fengming, who had already retreated into a tunnel, felt his heart settle at once.
With a thought from his divine sense, the remaining Silver Sheath Worms