Zheng Fa had a bit of a headache.
He had ample reason to suspect that the young girl in green in front of him was a reincarnation of a calculator.
She was exceedingly calculating!
Beyond basic arithmetic knowledge, she also mastered the Heavenly Element Skill—a skill similar to solving polynomials in this world's mathematics.
What astonished Zheng Fa even more was that the girl also demonstrated a technique called Zhuishu, which was similar to what he knew about finding limits.
She could accurately and quickly provide answers to any complex calculation problems within the scope of the college entrance examination.
Her only weakness seemed to be proof reasoning.
She couldn't even understand why proofs were necessary.
From her, Zheng Fa gleaned a glimpse of the mathematical ethos of the Xuanwei Realm: practicality is valued over logic.
"Anything else?" The girl put down the problem she had just solved, lifted her eyes, and her face was full of pleased satisfaction.