C2128 Love Biscuit

When Zhai Xingchen was not around, Gong Suhe took a tissue and laid it on his table. She then placed two pieces of biscuits on it.

Just as she was about to leave, Gong Suhe swept her gaze over the books that Zhai Xingchen had placed on the table.

When she saw the name of the book, She was a little surprised. Because this mathematical modeling wasn't a high school curriculum