Mathematics?

Since he was a child, mathematics has always been Zhang Zi'an's hard work, and when he heard Meng Li's abrupt question, he couldn't help but be stunned, "What do you mean?"

Meng Li looked at his watch and hurriedly said, "If Store Manager Zhang wants to find a book about life, the universe and everything, he might as well go to the reference book category to find it, if that kind of book really exists, it should be placed in the reference book category...... Okay, I still have something to do, let's go first, and I'll see you later!"

Reference book classification?

Without waiting for Zhang Zi'an to react, he waved his hand to Zhang Zi'an, hurriedly grabbed the book and left.

"Wait a minute! Why a reference book?"

Zhang Zi'an finally came back to his senses, and hurriedly chased down the second floor to ask for clarification, but Meng Li had already mixed with other readers who went to go through the borrowing procedures, and disappeared in a blink of an eye, leaving Zhang Zi'an standing messily at the staircase.

Meng Li's expression when he spoke was quite affirmative, not like he was joking casually. Although Zhang Zi'an doesn't understand how life, the universe and everything are connected to reference books, but as the saying goes, if you rush to the doctor in a hurry, if you look for a breath, time is absolutely not enough, so you can only look for it in the reference book as Meng Li said?

The collections on the second and third floors are roughly divided into four categories: social sciences, science and technology, reference books, and literature, and if the search scope is limited to reference books, the time taken will be reduced to a quarter of the original time.

Zhang Zi'an pondered carefully--Nima is not right! There are reference book areas on the second and third floors, should I go to the second floor or the third floor to find them? Or the second and third floors are possible? Meng Li was in such a hurry that Zhang Zi'an didn't have time to ask.

He was standing in the staircase corridor between the second and third floors, and readers came and went from him, thinking that he was in the way.

So go to the second or third floor first?

He took out his mobile phone and looked at it, the light cluster representing the location of the elf on the electronic map was already extremely dim, judging by the speed of the search just now, the second floor and the third floor could only choose one of the two, just like the heads and tails of a coin toss.

Can't hesitate any longer, Zhang Zi'an decided to gamble on the second floor, after all, the second floor is the Chinese area, the speed of finding will be faster, maybe after the search, you can go to the third floor to find it.

As soon as he took a step, he suddenly remembered that when the elf first appeared in the morning, Xinghai winked at him three times outside the storage room. He didn't know what Xinghai was doing at the time, and Xinghai didn't explain.

Don't......

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

Of course, maybe he was mistaken, but in fact, Xinghai didn't mean anything special at all......

is the so-called emergency illness and rush to the doctor, since he has no clue, he has the right to be Xinghai is what it means, anyway, it's a gamble.

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

The range is reduced by half.

Reference books, including dictionaries, class books, political books, encyclopedias, yearbooks, manuals, abstracts, genealogies, catalogues, maps and many other classifications. Zhang Zi'an hadn't searched the reference book area on the third floor before, and he looked at the dazzling spine of the book and snorted.

He bet on the three blinks of the sea of stars has a special meaning, in that case, what does it mean that the sea of stars faces the wall after three blinks?

Wait, which direction is that façade coming? East or West?

Zhang Zi'an discerned the direction and turned his body to the west facing Xinghai at that time - coincidentally, the bookshelves in this reference book area were also east and west, and he faced the west and saw the east side of the bookshelf.

The range has been reduced by half again.

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

The range is again reduced by a third.

If he understood Meng Li's hint and Xinghai's hint correctly, the search range had been reduced to 1/48 of the original.

Zhang Zian raised his head, raised his mobile phone above his head, and looked for it line by line.

One bookshelf, two bookshelves, three bookshelves......

No......

No.

No!

There are fewer and fewer bookshelves left, and he is getting more and more anxious, could he really be wrong?

Oxford Interactive Illustrated Dictionary, Cambridge Advanced Learning Dictionary, Collins Dictionary, Oxford Contemporary Encyclopedia Dictionary, Dictionary of the Royal Spanish Academy, Macmillan English-English Dictionary...... Tomes of dictionaries appear and disappear on the screen of mobile phones.

Zhang Zi'an's arm muscles were sore again, and he was about to change his hand to hold the mobile phone, when the left and right hands were handed over, he suddenly saw that the picture of the mobile phone screen seemed to have a slight deviation from reality.

His heart was beating violently, and he hurriedly returned his phone to where it had just been, and through the game capture interface, he saw a scarlet book inserted between the Dictionary of the Royal Spanish Academy and the English-English Dictionary of Macmillan, the spine of which was bare and devoid of any characters.

Removing the phone, the scarlet book disappeared from view.

The phone was put back in place, and the scarlet book was in plain sight.

You can't be wrong!

Zhang Zi'an endured the ecstasy in his heart, held his mobile phone in one hand to observe, and slowly stretched out his other hand.

Prior to this, he had never touched the elves to be captured with his hands during the capture of Fina, Old Cha, Richard, and Pegas. Although these elves exist in reality in their real form after being captured, when they are in a state of waiting to be captured, they are between reality and illusion, and he can't imagine what it would be like to touch them.

Now, he was about to touch a book from the Void.

He pinched the spine of the book, not feeling the temperature, but other than that, it was about the same as a normal book, with the same thick texture.

With the added strength of his hand, he pulled the book out.

Sure enough, as the elf described, this book has no title, the cover, back cover, and spine are all bare, and the hard cover has a golden metal edging, heavy, you can't see the old and the new, and it feels good.

With Zhang Zi'an's character, he really wanted to open it to see if the book really included life, the universe and everything, and he also wanted to know why Meng Li could conclude that this book was placed in the reference book category, but he didn't have time, so after he took out the book, he immediately ran to the fifth floor with his armpit under his arm.

Some passers-by pointed to the sign on the wall with disgust on their faces, "No loud noise, running, spitting, and littering in the museum", but Zhang Zi'an ignored it.

He returned to his seat in one go, bent over, and typed a line through the chat room as fast as he could.

[Dashuaibi]: 3.1415926, I found your book, I'm standing now, holding your book in my hand!

He pushed away his keyboard and held the scarlet book of elves aloft like an Olympic torch, praying that it was still too late.