A woman who transmigrated stole the world's core, returned to her original world, and even took the Chosen One with her.
This world is doomed.
The Heavenly Dao seeks out the strongest person in existence and persuades her to go to the neighboring interstellar world, which is about to be overrun by aliens, and steal back the core.
The good news: she's really strong.
The bad news: she's a villain who has spent hundreds of years cultivating in a savage wasteland, all the while looking forward to sharpening her blade and destroying the world.
Heavenly Dao: "Let's make a deal. Come out of seclusion and save the world."
Lan Xu: "I remember my character setting is that I'm the villain."
Heavenly Dao: "What a coincidence. Let's go destroy a world together first."
It's quite beautiful, and the setting is quite novel (at least I haven't read many books with this kind of initial setting before). After reading it later, I felt that the heroine was transferred from the interstellar world to the heavenly way of immortality. She became an ancestor and did tasks and returned to the interstellar (the heroine's identity). But after all, she has become an "ancestor". It is indeed a heroine novel, and she is basically controlled by the first person in the world of heaven.