"yes, I see."

Yao Ruixue suddenly walked to the side of the bed, counted the stones, and then knocked every two stones, and then every three stones on the other side, and sure enough, she heard a click, leaned against the front of the table placed on the wall, and moved a stone door again.

"It turns out that the master really told me the password a long time ago."

Because the side of the bed was Shi Che's, and the number of blocks was clear, Yao Ruixue remembered that when she was about ten years old, the master and her had played a guessing game, and each knock represented a number.

Therefore, after seeing the stone door again, the particularly delicate mechanism lock, Yao Ruixue will be easier to open.

The trap lock looks delicate and tall, but it doesn't require a key.

"Stone, lend me your saber, I know how to open this door."

Shi Hongfei handed her the knife and told her to be careful, Yao Ruixue actually wanted to use the saber to cut Lu Feng's fingers, and wanted to use his blood to open the door, but at this moment she was a little hesitant.

The master once mentioned that some locks can only be opened by one's own blood relatives.

If not, if two attempts fail, the lock and the person who picks it will be destroyed.

How to destroy, the master did not say.

What she hesitated was that if she tried it today, and the result was as she guessed, then the brother-sister relationship between her and Lu Feng would come to an end.

If she didn't try, she would never have to guess.

"What's the matter, little girl?"

Lu Feng saw Yao Ruixue's hesitation, and even after she got the saber, her hands trembled a little, and her eyes looked at him, which was a little complicated.

Shi Hongfei also understood, and finally confirmed again that his grace was really hiding a lot of things.

Otherwise, at this moment, she shouldn't have hesitated.

After all, they guessed the same result, opening this door should be the real way to the vault, and the way out.

"Wanwan, do you want blood?"

Shi Hongfei grabbed Yao Ruixue's trembling hand and wanted to hug her and soothe her overly fluttering emotions, but Yao Ruixue avoided her.

Yao Ruixue opened her mouth, and finally chose to use her own blood.

At this moment, she didn't care whether Lu Feng was her own brother or not, she had already regarded Lu Feng as a brother who was only a few minutes older than herself.

Therefore, whether he has a blood test or not, the result is the same.

"Well, the blood of the inheritor of the Qi family can be opened."

Therefore, in the previous life, after Yao Ruixue told Sun Jinfa the location of the vault, they didn't find it for a long time, and before she got the more than 50,000 books, she was drawn a lot of blood again.

She guessed it should be used to open the lock, right?

The result was wrong, because she cut her finger without fear of pain, and dripped blood directly into the three holes of the lock.

As soon as she dripped, her fingers were taken into her mouth by Shi Hongfei, and her eyes were full of tenderness and pity.

There was a loud bang, and the locked door opened automatically.

Looking around, I don't know, I thought I was in the library of a university.

It is full of study rooms, neat and tidy, four rows in a row, ten shelves in a row, from bottom to top, each bookshelf has fifteen layers of book grids, and each book grid is full of books.

There are more than 50,000 books on it!

That's 500,000 copies!

In her previous life, she was deceived!!

"Wanwan, does it still hurt?"

Shi Hongfei didn't care about what was inside the opening, he just wanted to know if his Wanwan hurt with so much blood in his hand.

He would be willing to shed blood in her place if he could.

"Is there something uncomfortable?"

Yao Ruixue's face became not very good, but Shi Hongfei thought that there was too much blood.