I Am the King of Scrolls in Silver Time and Space

The academic scumbag Zhang Wei once traveled through the Ultimate Three Kingdoms, but was accidentally bound to the "involution learning system". While others are practicing martial arts, he is studying the "Five-Year College Entrance Examination and Three-Year Simulation". While others were fighting on the battlefield, he was reciting the "Departure Guide". Guan Yu was confused: "Third brother, why are you always reading?" Zhang Fei smiled mysteriously: "Knowledge is power." Until one day when 100,000 enemy troops came to the city, Zhang Fei silently took out a book of "Advanced Mathematics" and opened the chapter on calculus... In an instant, the color of the sky and the earth changed, and the enemy general began to solve equations on the spot.