C459 Sick to the point of death

"You guys leave first, I want to be alone for a moment!"

Gu Shiyi stared at the letter blankly for a long time before coming back to her senses. After Ning Liu and Ning Qi walked out of the room and closed the door, Gu Shiyi took out the letter with trembling hands.

Opening up the letter, what entered her eyes was the word 'rest book', and seeing this