The Male Lead's Younger Sister in a Period Novel

In 1988, Lin Xiao is eight years old, living in the cotton mill compound and attending second grade like any ordinary child. After a bout of high fever, her older brother Lin Yuefei suddenly starts acting strangely. He quits the good job he's lined up and goes to haul bricks at a construction site. He says the factory's elementary school isn't good enough and wants to transfer her. The first time he meets a young woman, he tells Lin Xiao that she's his future sister-in-law. The woman nearly slaps him. Lin Xiao: My brother's fever fried his brain! Lin Xiao bravely takes on the burden of her family. Pounding her little chest, she tells her brother, who's gone fever-crazy: “I'm ten years younger than you, big brother. I'll take care of you in your old age and see you off when you die.” - Lin Yuefei returns to the age of eighteen and decisively leaves the state-owned textile factory, which is in decline, for the booming construction industry. His career takes off, his investments are spot-on, and he leads the whole family to a better life. His only headache is his little sister. Lin Yuefei: My sister will grow up to coach gold medalists in math competitions, but right now she asks me why one plus one equals two? Could the butterfly wings of his rebirth have blown his sister silly? - Even if everyone says his sister is a genius, in her brother's eyes she's still a silly girl who'd starve without him. Even if everyone says her brother is a winner at life, in his sister's eyes he's still a silly guy who'll need her to support him in his old age. - *A cheerful, cozy slice-of-life story about returning to 1988 *The siblings dote on each other and bicker, too - Theme: Love gives people strength