C78 Katharine Is Back

Yu Chulu suddenly laughed.

Yu Fanya's formula must be hers.

Yu Hong told her that she was still a university student and was afraid that no one would believe the formula she developed. But what about now? Instead, he let Yu Fanya have the fruits of her labour.

Suddenly, Yu Chulu remembered that day when she went to look for Yu Hong and met Yang Huiyan. So that's what it meant