In 2091, the information classroom of Xinhu No. 3 Middle School had a faint smell of chalk dust. The old-fashioned projector projected a distorted function image on the blackboard. The fan was spinning feebly, and the sound of the blades cutting the air mixed with the vibration of the boys in the back row secretly browsing short videos, forming a unique lazy melody in late summer afternoons. Lin Xiaoman's forehead was covered with sweat, and her fingertips were typing rapidly on the optical keyboard. The differential equation on the screen, which the math teacher called "unsolvable," had already consumed her for two entire classes.
