Lan Yifei should have turned professional around 2007, but he was dismayed to find the tennis world teeming with prodigies. While his classmates switched careers, Lan Yifei unexpectedly received help from a mysterious system while submitting his resume online. How terrifying are professional players who can quantify everything about physical attributes, technical skills, and opponents' weaknesses? Lan Yifei resolved to challenge the old order of the tennis world: "You fight with talent and hard work, but I'm playing the upgrade game." "On the road to perfection, I'm destined to go the furthest!"