Evening study session.
"What kind of damn tree is a function? Better watch out, or once I get the chance, I'll chop it down in a heartbeat." Bai Bufan scratched his messy hair, speaking somewhat irritably.
Damn it, this sneaky little textbook sure has a good sense of intellectual property protection; I can't even steal a bit with my brain.
"Even if you chopped it down, you'd still have to differentiate it," Lin Li, next to him, said with a cheerful grin.
"...Crap."
Bai Bufan was rendered speechless and laid his head on the desk in defeat, then glanced at Lin Li, "Seriously, how come you don't wail like a banshee when facing math anymore?"
"Because I now find math to be quite simple," Lin Li replied with a disdainful smile. "When it comes to the midterm, being 51st will just be a stepping stone for me. The road downhill is noisy, but luckily, I'm climbing up."