Science Fiction: Forced to Become an Interstellar Civilization at the Beginning

[Technology Tree] + [Interstellar] + [Battleship] + [Gene Lock] In 2432 AD, the Sala civilization wandering in the universe found that the earth's environment was very suitable for their survival. They originally wanted to drive out all human beings and plunder the earth, but they found that humans with less than first-level civilization actually had the means to destroy the earth. In the end, after negotiations, the Sala civilization helped humans enter the starry sky, and the earth was owned by the Sala civilization. After the earth was controlled by the Sala civilization, they went back on their word and wanted to destroy mankind. The introduction is too weak, please move to the main text.