C28 Vinegar!

Fei Yaoyao was still studying in the classroom as usual. She originally wanted Ling Xi to help her make up for it, but since Ling Xi was in a bad mood, she was too embarrassed to call her over.

Just as he was worrying about a difficult problem, a voice she thought was very pleasant to hear suddenly came over, "Yaoyao, are you still studying?"

Fei Yaoyao was taken aback