What Does It Mean For The Empire's Iron Curtain To Fall From The Sky?

[Imperial Version·World Gate Expedition·Iron Age]
Lin Ce traveled through time and became Emperor Weiss of the Ossos Empire.
Relying on the 'Civilization Fire' technology, we can crush other countries and end wars with cross-era firepower.
But at this time, the empire has turned into a monster that is sweeping the world through extreme militarization, like a dragon that is about to lose control.
The empire under "victory" may be more fragile than under defeat.
Until.... He activated the gate that can travel through the heavens.
——
The world of Iolanth.
"When the meteors of night fall on the continent of Iolanth, the green leaves of Eternal Summer will be covered with iron scales, a new sun will rise in the mountains, and the brave warriors of the wasteland will be silent in the roar."
"An era made of steel and flames is about to come, and everything in the old world will be shattered under the steel and flames."
This is the death prophecy of the last great prophet of the elves.
Later.
The Elf Queen always returns to that sunny afternoon in her nightmares.
She saw the prophet's lips moving silently, and saw how she and her people confidently misread everything. They regarded "Iron Scale" as the resurrection of the Dragonborn, and regarded the "New Sun" as the birth of the artifact.
When the prophecy becomes reality.
The dwarf demigod colossus dissipated like an avalanche in a ray of light called a "nuclear explosion". The flaming iron curtain that shrouded the night sky covered the orc wasteland, and the human steel army crushed the eternal sacred tree.
She discovered that her previous interpretation was terribly wrong....