Original title: The Elven Empress's Interdimensional Boundary
The last empress of the Elven Empire transmigrates to a parallel world with the help of an ancestral relic, swept along by the tides of the times. From a higher vantage point, she pins the tracks of history into the positions she needs.
This story is not only about developing modern resources in the modern era. Once modern magic-based industry emerges, it will also send ripples through the present day.
Here, there are Valkyries (the combat power of an ordinary Valkyrie equals that of an Abrams tank).
Here, there are shipgirls (They have cognitive cores. Humans found a glowing box in the sea that could not be damaged by human technology. If they built a room aboard a ship and installed the box as it instructed, a cognitive model would be born. Thus, shipgirls became an important part of naval history.)
P.S. I've been busy and left this on hiatus for a long time. Now that I have some free time, I'm back to updating. I'll take this opportunity to write in a more authoritarian style and see if I can pull it off.