After extracting the lowest book, Hao Lian became more and more proud.

"This is the ninth book, it's done!"

Ling Luoyu looked sideways: "Do it?"

It seems that there is no change.

Hao Lian also noticed that the bookcase was still motionless, and his smile slowly froze: "This..."

At this time, isn’t the theoretical bookcase moving?

Why is there no movement at all?!

Ling Luoyu put down the book in his hand and looked at Hao Lian sideways: "Has he made something wrong?"

Hao Lian's face turned red in an instant: "No... it shouldn't be?"

If you really make a mistake, it would be a "slap" slap in the face.

He was no longer joking and quickly checked on the bookcase.

After a while, his movements suddenly froze. He slowly turned his head to look at Ling Luoyu, his eyes moving abnormally.

Ling Luoyu saw the clue: "Has found it?"

"There is one...I don't know if it is..."

He moved a little and pointed to a bump at the back of the bookcase.

"This may be the switch-on button..."

As he said that, he raised his hand and wanted to tick it.

"Don't move!" Ling Luoyu quickly pressed his hand: "This button is on the second floor, and as long as you are not careless, you can easily see it... If this is the case, then why do you have so many nine-digit numbers?"

Just expose this button so that you can find it all at once!

Hao Lian also realized that something was wrong and quickly withdrew: "This is a trick... it is the mechanism hub for activate the backlash formation!"

"This is the easiest and the lowest trick. Anyone who is a little calmer will not make such a mistake!"

"……What's the meaning?"

"This hub should not be aimed at people like us, but faces the sirens of the princes and princesses... As long as they enter here and press that hub, they will immediately trigger the alarm and attract the guards outside!"

If the prince and the princess are a little curious, she will not miss this bookstore!

Once they break in and touch that button, they attract guards instead of fearless damage.

Hao Lian was inexplicably sweating—

Isn’t this just saying that he is so proud that he can’t hold back?

It seems that this is true!

"Then...Miss Ling, do you know which way to open it?"

"The agency should be in the book you have drawn... Maybe something is wrong..."

Ling Luoyu half-kneeled on the ground, looked at the books in the bottom row carefully, and his eyes sank: "Theoretically, the changes in these numbers can change with the changes in people's hearts, right?"

"certainly……"

The mechanism is designed by humans, so the deduction of these numbers can naturally be done as you wish.

Just follow the rules!

Ling Luoyu raised his hand and decisively pulled out another book in the bottom row.

"Click!"

The sound of the hidden button of the mechanism suddenly rang.

Hao Lian was half-kneeling on the ground. When he heard the movement, he jumped up instantly, and raised his fists like a big enemy, facing the direction of the door.

Ling Luoyu: "..."

What are you doing so nervous?

Hao Lian raised his fist and saw that there was no guard coming from the door, and he suddenly realized it—

He misunderstood!

With the strange movement just now, he thought the patrol outside had discovered the unusual sound inside and rushed in!

He slowly lowered his head and faced Ling Luoyu's gaze that looked upwards, and immediately thrust his mouth.

"I...I'm doing a good job of keeping watch for you!"
Chapter completed!