Lin Sui, Blue Star's top programmer, was frail and sickly since childhood. She died suddenly while working and was the only daughter of Liu Guoliang, the head coach of the national team. Since childhood, his body has been corrected by the rules of the world, making him healthy and possessing extraordinary athletic potential. She has a photographic memory, rigorous logic, and a soft personality on the outside but strong on the inside. She has the agility of a girl and the calmness beyond her years.