C90 Genius!

"Yes, I've been watching all night." Lee Yifann was not sure if Cang Xuande was peeking at him from outside the window when he was reading. However, such a small matter did not matter.

Cang Xuande still did not believe him. He frowned and asked, "Have you read that book before?"

If he had read that book before, it would not be strange for him to memorize it so quickly