Aliens Are Attacking the Earth

A disaster occurred on the earth thousands of years ago, and some humans fled the earth. Thousands of years later, the Ancient Xia Star welcomed five aliens who claimed to be the citizens of the eighth-level galaxy in the universe. They claimed to be the descendants of the people who fled the earth a thousand years ago. They came to the Ancient Xia Star to collect plant sample information to prove that the Ancient Xia Star was their home planet thousands of years ago. As for Nuwa Island, this is a place that everyone knows about in ancient Xia Star. It is said to have treasures and is the most complete place to store plants. Ziyu was their guide into Nuwa Island. My writing style is not very good. I accept criticism and evaluation, but I don't accept abuse.