C414 True or false

Hearing Leng Yu's shout, Gu Shiyi put down the book in her hands and walked towards Leng Yu.

"《 Phantom Building Survival Guide》? But, there's nothing written on it! "

Gu Shiyi took the《 Phantom Building Survival Guide》 that Leng Yu was holding, and flipped from beginning to end, and then from end to end, she had not seen a single word from the start to end of the book