Why do so many of these fantasy stories do this? Whenever there's some "high tech" needed in a world with magic, what do the authors go for? That's right...stuff from our modern era...
Just like the ship in chapter 39 now. Supposedly an anti-calamity magic warship. But it just looks like a modern day (or fairly modern at least) warship, only with modern cannons replaced with "magic laser cannons".
No creativity or anything. Just pure laziness. It's a world full of magic where physics have little meaning, why would such a world ever develop exactly the same as our non-magical, physics bound world?