Although it's hard to memorize, but… compared to reasoning out the answers myself, the difficulty is on an entirely different level! I can't help myself every time I think about the surprised expression Teacher Qiu Yuzhu will show next.
Feeling rather relaxed, Lin Zheng spontaneously started to smile.
"What's up? Thinking about something happy?" asked Qiu Yuzhu, resting her cheeks on her hands, to Lin Zheng.
"Mmhm," Lin Zheng nodded.
"Teacher Qiu Yuzhu, although your questions are hard, for someone like you who always starts from zero, it's really difficult to prevent me without confirming anything," Lin Zheng wrote the last function, then passed over the test paper.
"Finished already?" Qiu Yuzhu took the test paper.
"Yeah, I don't know if it's correct or not; it's the first time I've worked on questions of this kind of difficulty." Lin Zheng commented casually. But his face was filled with confidence.
