[Science fiction + no system + time travel + imagination]
Li Hao traveled through time and went to ancient times from the future.
He thought he would live a good life in ancient times, practicing martial arts and so on, but unexpectedly learned that the world he traveled through was about to be invaded by time and space.
Li Hao began to form an indigenous army, develop technology, and prepare to resist the invaders to the end...
When the space-time invaders arrived, they were dumbfounded when they saw the densely packed mechas and various high-tech weapons!
"What? Isn't this an indigenous world? How come there are such advanced weapons?"
"Am I right? These... These natives are so strong?"
"Can't beat it, can't beat it, it's over, quickly close the space-time channel!"
"The closure of the space-time channel failed. Oh my god, we are about to be invaded by the indigenous people!"
…
(Slow-heat type, don't enter if you don't like it. The writing is relatively detailed, and I will try to speed up the pace.)
