This is not a "science triumphs over superstition" story.
This is the story of a little girl who used science as armor to survive the deepest darkness, and finally found her own humanity, and used this humanity to warm more people.
Science gave her weapons.
But her brother, her followers, and those willing to believe in her gave her a way home.
Interstellar science fiction + Chinese horror fairy tale + strong female time travel and upgrade + emotional redemption