Long Zhan looked at the data on the screen and said without hesitation:
"We can't complete the crossing. Execute the second contingency plan."
"Self-destruct immediately on the spot."
On the screen, through the reconnaissance drone's view, both Pangu units stopped trying to break through at the same time. The warning lights on their chests turned from blue to red.
They no longer had a retreat route. Rather than let the Demon Clan dismantle them, they would destroy this newly expanded underground staging area and buy time for the portals on the surface to open.
"Tactical nuclear devices activated."
"Three-second countdown."
The surrounding sixth-rank Demon Clan seemed to sense the danger and retreated almost simultaneously.
But it was already too late.
Two hundred-kiloton nuclear bombs detonated simultaneously, and searing white light swallowed the surveillance feed.
Immediately afterward, the feed automatically switched to the views of other robots on the surface as violent tremors erupted throughout the underground area.
The AI system began simulating the conditions underground.
The enormous cavern began collapsing from its center.
Hundreds of millions of tons of rock fell from the vaulted ceiling, and the newly excavated passages fractured one after another.
The Demon Clan within a radius of several kilometers were either torn apart by the shock waves or completely buried beneath layers of rock.
"Pangu signals lost!"
"Spatial fluctuations are still present. The wormhole hasn't been destroyed!"
"The main cavern has collapsed. Demon Clan units are temporarily unable to continue passing through!"
Long Zhan was not surprised.
A space wormhole was not a physical object. Two nuclear bombs were not enough to destroy it; that would take an Antimatter Bomb.
But to keep transporting its army through the wormhole, the Demon Clan needed a sufficiently spacious underground area.
Now that the entire cavern had been buried,