Xu You is a transfer student and is arranged to be Gu Fu's deskmate.
When they first met, Xu You misread the class schedule and took out his math book when the next class was English.
Gu Fu was speechless: "The next section is English..."
Xu You: "Mathematics is on the class schedule."
Gu Fu was helpless: "That was from the previous session."
Xu You:……
Intention: A mayfly shakes a big tree