This Is Called a Warp Drive

About a hundred Firing Pin helicopters were chasing after the UFO in the sky.

This was almost all of the near-ground defense capabilities of the Ancient River People. Their fleet in space was also trying to find the source of the UFO, but the results were minimal.

The UFO flew over a city with a large population and was witnessed by the public.

If they chose to attack, the city would suffer a devastating blow, and heavy casualties would be inevitable.

However, the UFO did not do so. It only stayed above the city for a short moment before flying in another direction.

The Ancient River People naturally wouldn't think that this was a friendly civilization just because the UFO didn't attack the city. What if the other party didn't cause great damage just to accept the planet in the future?

In short, the moment the UFO appeared, they identified it as an enemy.