Lin's golden finger is the experience brought by rebirth, and Lin's crossing is to create contradictions and conflicts for the story. Rebirth is her greatest golden finger. Lin has many years of life experience. This is Lin's advantage when she reaches Lin's younger world. She can use experience to suppress people younger than her. Moreover, Lin's young age will make it easier for people to despise her and misjudge Lin's ability, making it easier for Lin to handle some things. A person's greatest advantage is his life experience.
Lin's life experience is not complicated. In the world of strawberries, it is Lin Zhaosheng's greatest regret to give up mathematics at dawn. Later, Lin Zhaosheng had a car accident and became Alzheimer's disease. He still missed Lin Zhaori and became a math researcher. In fact, Lin has always had a knot in mathematics. In Strawberry World, Lin secretly loves Pei Zhi, a mathematical genius, but the gap between them is too big for Lin to face, and Lin suffers for it. Later, by chance, Lin crossed into an orphanage. Lin found Lin Zhaosheng with his own memory, and when he opened his mouth, he called his father, which frightened the young Lin Zhaosheng.
Later, a couple came to the orphanage to adopt Lin Zhaosheng, which almost made Lin Zhaosheng miss his own daughter. Lin Zhaosheng is a man with a hard mouth and a soft heart. He says he has no daughter. Secretly made a paternity test, which confirmed that Lin Zhaori was his daughter. Father and daughter know each other, and Lin also played his mathematical talent in the world he crossed, making up for the regret of the strawberry world. Lin learned that his birth mother was a mathematician in this world. After giving birth to Lin, he abandoned his father and daughter to concentrate on his math research. Lin has never seen his mother in his life. Because of the wrong research direction and the arrival of a little life, Lin Zhaosheng gave up mathematics and chose his daughter.