【Science fiction + no System + transmigration + wild imagination】
Li Hao transmigrated from the future to ancient times.
He thought he would settle down and live a good life in the past, maybe practice martial arts or something. Instead, he unexpectedly learned that this world was about to be invaded through time and space.
Li Hao began building an army of locals and developing technology, preparing to fight the invaders to the bitter end...
When the invaders arrived, they stared at the sea of mechs and all kinds of advanced weapons, dumbfounded!
“What? Isn’t this supposed to be a primitive world? How can they have such advanced weapons?”
“Oh my god, are these locals really this strong?”
“We can’t beat them, we can’t beat them! It’s over. Shut down the space-time passage, quick!”
“Space-time passage shutdown failed. Oh no, the locals are about to invade us instead!”
(A slow-burn story. Don’t read if that’s not your thing. The story is told in considerable detail, but I’ll do my best to pick up the pace.)