Li Chen glanced at Lan Huanxi and said, "Stand properly, I'll explain the first method to you."
Lan Huanxi's pretty face blushed crimson as if she were a thief, and she quickly stood up.
She wanted to explain what had just happened, but when the words reached her lips, she didn't know what to say, fearful of leaving a bad impression on Li Chen.
Fortunately, Li Chen didn't dwell on the topic, but instead, he shifted his gaze to the exam paper.
"For this problem, you should first use the derivative formula to take the derivative, then use the trigonometric formula to transform and sum up..."
Li Chen, as if recounting something precious, went on endlessly, explaining using knowledge from the high school textbooks as much as possible.
Lan Huanxi suddenly felt enlightened, and the way she looked at Li Chen was filled with even more admiration.
Truly a towering figure to be looked up to!
Probably only a relegated immortal descended from heaven could have such divine skills, right?
