The teacher handed out the after-lesson exercises. Gu Xiao looked at the pile of questions. They were all the targeted expansion exercises taught in today's class. What did she learn today? Computation of vectors? But she didn't remember a single formula!
"Gu Xiao, what's wrong?" An Yang sat beside Gu Xiao. Seeing that she looked like she was about to break down, she came to show her concern.
"An Yang, did you listen to the class?"
"I did. The basic calculation of vectors is quite simple."
"Big shot, teach me!"
An Yang laughed. Just as she was about to agree, someone behind Gu Xiao spoke first. "Okay."
Gu Xiao and An Yang: "?"
Chu An brought his notebook to Gu Xiao. "I've memorized everything. Take a look. If you have anything you don't understand, you can ask me."
