math?

Since childhood, mathematics has always been Zhang Zi'an's hard work. He was stunned when he heard Meng Li's question, "What does it mean?"

Meng Li looked at the watch and said hurriedly: "If Manager Zhang wants to find books about life, the universe and everything, you might as well go to the reference book category. If that kind of book really exists, it should be placed in the reference book category... Okay, I have something to do, so I'll leave first, and see you again if you have the chance!"

Reference book classification?

Before Zhang Zi'an could react, he waved to Zhang Zi'an and hurriedly left with the book in his arms.

"Wait a moment! Why is it a reference book?"

Zhang Zi'an finally came to his senses and hurriedly chased down the second floor to ask clearly, but Meng Li had already been mingled with other readers who went to handle the borrowing procedures. In a blink of an eye, he disappeared, leaving Zhang Zi'an standing at the entrance of the stairs in a mess.

Meng Li's expression when he spoke was quite certain, not like he was just joking. Although Zhang Zian did not understand how life, the universe and everything were linked to reference books, as the saying goes, seeking medical treatment in an emergency. If you look for something randomly, time will definitely not be enough, so you can only search in the reference books as Meng Li said?

The collection of books on the second and third floors is roughly divided into four categories: social science, technology, reference books and literary novels. If the search scope is limited to reference books, the time will be reduced to one-quarter of the original one.

Zhang Zi'an thought about it carefully - it's not right! There are reference book areas on the second and third floors. Should we go to the second floor or the third floor? Or are we a possibility on the second floor and the third floor? Meng Li walked too fast, so Zhang Zi'an didn't have time to ask.

He was standing between the staircase corridors on the second and third floors at this time. Readers came and went from him and felt that he was a bit in the way.

So, go to the second or third floor first?

He took out his cell phone and looked at it. The light ball representing the location of the elves on the electronic map was extremely dim. Judging from the speed of search just now, it was only possible to choose one of the second and third floors, just like the front and back of a tossed coin.

I couldn't hesitate anymore, so Zhang Zi'an decided to take a bet on the second floor. After all, the second floor is a Chinese area, so the search speed will be faster. Maybe after searching, you can go to the third floor to look for it.

He had just taken a step when he suddenly remembered that when the elf appeared in the morning, Xinghai blinked at him three times outside the storage room. He didn't know what Xinghai was doing at that time, and Xinghai didn't explain.

Could it be...

Is Xinghai reminding me to go to the reference book area on the third floor to find it?

Of course, maybe he was wrong, but in fact, Xinghai has no special meaning at all...

As the saying goes, he is in a hurry to seek medical treatment. Since he has no clue, he just thinks that Xinghai means this, it is a gambling anyway.

Thinking of this, he no longer hesitated and returned to the third floor and headed straight to the reference book area.

The range is reduced by half.

Reference books, including dictionaries, books, political books, encyclopedias, yearbooks, manuals, abstracts, catalogs, maps, and many other categories. Zhang Zian had never searched the reference book area on the third floor before, and looked at the dazzling array of spines and blew the air.

He bet on Xinghai's three blinks had a special meaning. Since that's the case, what does Xinghai's three blinks mean to face the wall after facing the wall?

Wait, in which direction does the exterior wall reach? East or West?

Zhang Zi'an distinguished the direction and turned his body to the west that Xinghai faced at that time. Coincidentally, the bookshelf in this reference book area is also on both sides of the east and west. When he faced the west, he saw the east side of the bookshelf.

The range was reduced by half again.

Finally, he raised his face at an angle similar to Xinghai and placed his phone horizontally, and saw the fifth and sixth floors of the bookshelf.

The range was reduced by one third again.

If he did not understand Meng Li’s prompts and Xinghai’s hints, the search range had been reduced to the original 1/48.

Zhang Zi'an raised his head, raised his cell phone over his head, and searched for it one by one.

One bookshelves, two bookshelfs, three bookshelf...

No……

No.

No!

The remaining bookshelf was getting fewer and fewer, and he was becoming more and more anxious. Could it be that he was really wrong?

"Oxford Interactive Graphic Dictionary", "Cambridge Advanced Learning Dictionary", "Collins Dictionary", "Oxford Contemporary Encyclopedia Dictionary", "Royal Spanish Academy Dictionary", "McMillan English-English Dictionary"... A large number of dictionaries appear on the screen of the mobile phone and disappear.

Zhang Zi'an's arm muscles were sore again. He was about to change his hand and raise his phone. The moment he was handing over his left and right hands, he suddenly saw that the screen of the mobile phone screen seemed to have some deviation from reality.

His heart beat violently and he hurriedly returned his phone to his previous position. Through the game capture interface, he saw a scarlet book inserted between the "Dictionary of the Royal Academy of Spain" and the "McMillan English-English Dictionary". The spine of this book is bare and has no characters.

Take off your phone and the scarlet book disappears from your vision.

The phone was put back in place, and the scarlet book was in my mind.

You can't make it wrong! This is the book!

Zhang Zi'an endured the ecstasy in his heart, held up his cell phone with one hand and slowly reached over with the other hand.

Before this, he never touched the elves to be captured with his hands while capturing Fina, Laocha, Richard and Feimas. Although these elves existed in reality in real form after being captured, when they were in the state to be captured, they were between reality and illusion, and he could not imagine what it would feel like to touch them at this time.

Now, he is about to touch a book from the void.

He pinched the spine and didn't feel the temperature. Besides, it was similar to a normal book, and had a thick texture.

He pulled out the book with his hands.

As the elf described, this book has no title, cover, back cover, and spine. It is all bare. There is a golden metal edge on the hard cover, which is heavy, and it cannot tell the old and the new. It feels good.

With Zhang Zi'an's personality, he really wanted to open the content of the book, whether the book really included life, the universe and everything, and he also wanted to know why Meng Li could conclude that the book was placed in the reference book category, but there was no time left. After he pulled out the book, he immediately put it under his armpit and ran to the fifth floor.

Some readers passing by pointed at the signs posted on the wall with disgust - "No loud noise, running, spitting everywhere, and throwing paper scraps in the museum", but Zhang Zi'an ignored it.

He returned to his seat in one breath, bent over, and typed a line of words in the chat room as fast as possible.

[DaShibi]:3.1415926, I found your book. I am standing now, holding your book in my hand!
Chapter completed!