In the main room of the museum, Fan was drinking tea and reading publications, and he was not fascinated.

When I finished reading the publication, it was already four quarters old, and it was already dark.

She got up and walked to the window, looked at the night scene, and closed the window.

Since Xuewang supported the Mojia Workshop to focus on business, due to the hot demand for the night market, the curfew in Xianjing has also been lifted, and the movement is indeed more free.

But this night also made a fuss, making Fan feel like an outsider every night, so it is better to seek purity in the ink museum.

Only when her grandfather is at home will she be in a hurry to go back.

But grandpa, as the secretary of the school palace, is riddled with trivial matters, and Fengtian is about to guide the way, so I am afraid that I can only live in the school palace recently.

After stretching his waist and sighing, Fan picked up the small bag he was carrying, turned off the lights and walked downstairs.

Walking all the way to the staircase, I glanced at the empty board, and turned off the lights in the lobby.

At this time, she also realized that there was still light on the other side of the library.

By the way, that sandalwood is still there.

Fan Huashi didn't intend to greet him, but the last person to leave had to routinely lock the door, and it was always bad for her to lock the guests inside, at least to make sure that the other party would not go out.

Fan also carried a small bag all the way to the front of the library.

The door was hidden, but she knocked softly.

No one answered.

I'm afraid I didn't turn off the lights when I left?

Fan Huashi shook his head and pushed the door in.

And then......

Then she saw a beautiful man sleeping on his side under the oil lamp.

The flickering lights reflect the layering and charm of the beautiful man.

This beautiful picture, if it is a person with poor self-control like Yingli, I am afraid that he will drool on the spot.

But Fan Huashi only passed in a short time, all the way to Tan Ying's side, and glanced at the scattered books on the table.

It's all very basic math and science books, and it's just a tasteless thing that I read when I was seven or eight years old.

It seems that although this Tan He is interested in mathematics and physics, his foundation is very limited, so he asked his grandfather to help him come to the ink museum to study.

Is he the one who makes the argument?

Can he withstand the coercion and refutation of the lobby?

Thinking of this, Fan Huashi's face suddenly turned pale, and his voice became coarse, and he wiped his forehead with the desk.

That's it, when the Heavenly Dao is in the past, it has nothing to do with me for a long time.

At this time, she looked at Tan Ying again, only to feel that he was still reading these at his age, and it was a little late.

But the heart of learning is good after all.

Fan put down the small bag when he painted, returned to the main room of the museum, took his winter wrapped scarf and covered Tan Ying's body, and left a note on the left side of the book, which turned off the lights and left.

……

Tan Ying fell asleep on her stomach, and suddenly felt very unhappy.

Rinima, it's so hot.

Covered in sweat.

But sleepy and too lazy to afford it.

But it's too hot.

No way.

He finally opened his eyes and angrily removed the scarf from his body.

Damn, it's summer, it's crazy!

It wasn't until he lit the lamp and saw the white scarf, which seemed to smell the fragrance on it, that his mood finally eased a little.

And then there was the note.

It was left by the book, and she said that the guest room was on the westernmost side of the second floor, and she lived in it.

Underneath there is another line of obviously more delicate handwriting -

[Learning ink is not afraid of old age, and diligence can make up for it. 】

[The white towel will give the book left tomorrow]

[The door is locked, and I am tired of jumping out of the window. 】

？？？

Tan Ying was confused.

It's true that hard work can make up for my clumsiness, but am I that old?

He scratched his head and tossed the towel aside.

Cover me this in the summer, are you afraid that I will sleep too well......

After throwing the scarf, Tan Ying grabbed the big cup again and walked outside, ready to drink some water before coming back.

When he left the library, he found that the lights in the library were on, as if they had been specially reserved for himself.

Yes, very discerning.

He walked all the way to the water room.

No doubt as he passed by the staircase, he seemed to see something interesting.

As soon as the steps stopped, the body twisted, and the eyes narrowed-

[A zongzi sells for 3 baht, and after eating, you can get 1 zongzi leaf, and 5 zongzi leaves can be exchanged for a new zongzi.

[I have 1,234,500 baht, how many zongzi can I eat at most?] 】

Tan Ying, this is fun.

Haha, Elementary School Olympiad.

The Suwen Ink Museum opened to teach, and this question on the board must be for the children.

Looks like the kids haven't been able to figure it out.

It's okay, uncle, help you.

Just woke up, do a mental gymnastics to relax.

Although there are some modular infinite series concepts hidden in this, we can solve them with addition and subtraction multipliers without advanced mathematical tools.

So Tan Ying grabbed the charcoal pen, wrote down a few equations in three or two strokes, and finally answered -

【514374】

……

The next morning, when the general was about to be in the morning, he saw a young ink artist blocking the door of the ink museum.

There is no doubt that this stunned person can only be Zhu Qi.

At this time, Zhu Qi had black bags under his eyes and messy hair, and he obviously hadn't slept all night.

In his hand, he clutched a stack of calculus paper.

12345600.

Why, why does one have so many baht! Can't he exchange it for two and gold?

Zongzi, eat zongzi.

Why is he so able to eat, the zongzi in Chu State is not enough for him to eat alone!

Zongye, 5 Zongye for a new Zong.

Is there any serious illness of the owner of this stall, can't he sell 15 baht and 6 dumplings in a package!

Indeed, the algorithm of 15 baht and 6 dumplings is Zhu Qi's shallow thinking.

Just because on this basis, for every 75 baht spent, you can save an additional 5 zongzi leaves, and exchange one more zongzi!

On the basis of this multi-exchange, every 375 baht can be exchanged for one more dumpling!

And then 1875 and more!

And then 9375...... 46875……

Looping infinitely, superimposing.

It's so painful...... It's so painful......

Owner, you're so tormenting, it's really ......

What an abrasive little goblin!

Unexpectedly, I'll count it all for you!

Then came 234375, 1171875 and 5859375!

It's over, 5859375's finally over!

There's a kind of you add two more zeros!

It's kind of late!

At this moment, Zhu Qi was standing in front of the door, with only the last obsession left in his mind and eyes-

"Light skirt and socks...... Light skirt and socks ......"

He stood like this until four o'clock.

The porter yawned and came out of the small room at the edge of the courtyard.

"Quick! Hurry!

Zhu Qi roared desperately.

The concierge was also frightened enough, and trotted all the way to open the door of the hall and open the door of the building.

Zhu Qi climbed all the way, and finally rushed to the small board at the staircase, desperately grabbing the charcoal.

Then I saw the number that had been engraved in my heart for a night-

【514374】？？？？？

Zhu Qi was stunned for a moment, and his whole body was empty.

It was a long time before he-

"Ahh

Yes!

Yes!

”

……

At two o'clock, the ink hall was opened.

But none of the people who came and went to work did their work.

The little hundred people were all gathered in front of the small board at the staircase.

Zhu Qi was still sitting on the ground at this time, just staring at the simple few lines of calculation on the board, unable to speak, and his eyes were distracted.

Others are also constantly appreciating.

These lines are reckoned like this-

[First use 15 baht to get 6 zongzi and 1 leaf, then buy 4 zongzi for every 12 baht, plus the 1 leaf left before, you can change 1 more zongzi, and 1 leaf remains.

[That is, 5 rice dumplings for every 12 baht.] 】

[In this way, you can buy 514365 dumplings, and finally there are 3 dumplings left, plus the first 6 dumplings, total:]

【514374】

In fact, Tan Ying can be written more concisely, just to let the children understand.

People who are mixed with the ink museum, it is not difficult to understand this, seeing such a solution, some people shout wonderful, and some people regret it.

"Alas, I thought about it on the way back, and I thought about writing it today."

"Me too!"

"Is this really the right idea? I don't understand it. ”

"Ah, well, it's hard to say......"

As he spoke, the regular voice of Fan Painting, like a digital note, came from afar.

"But 514374?"

Everyone hurriedly got out of the aisle and turned around to salute: "It's ......"

"That's right." Fan was not surprised at all, and only walked forward with a small bag, "It seems that the question of this decade is indeed too simple." ”

As she spoke, she walked up to Xiaoban, looked at the solution and nodded.

"It's not the prettiest solution, but it's okay." After that, she left the upper floor, "I will prepare two meals, and the solver will come and knock on my door at noon." ”

Seeing the owner go upstairs, everyone looked at each other on the spot.

Who? Who the hell is it?!

This question has been asked for a long time, but no one has answered.

At this time, someone grabbed the young ink man and said, "When you came, Ayu was here?" ”

"Yes......" Zhu Qi shook his head dumbly, "It is impossible for someone to ...... earlier than me"

"That must have been written last night."

"I'm afraid it's not the left of the book? Drove us away and answered the questions ourselves? ”

"No way, Shuzuo doesn't have this brain!"

"Is there anything to hide? Is it necessary to be so low-key? ”

"No matter who it is, remember, light skirt and socks!

”

"Yes, Black Boots!"

"Black? White socks!

！ ”

"The style of the hall owner, shouldn't it be black socks?"

"It shouldn't be ??? in vain"

That's when another dispute began.

……

In the morning, Fan Huashi set a few official duties, changed a few drawings, and mobilized a few people, so he ordered Shuzuo to go out to buy a few dishes early, and he picked up the newly sent medical publications to read.

When it comes to touching fish, time always flies, let alone in the morning.

When Fan put down the publications, a table of dishes and the seats on the opposite side were already set.

Looking at the water clock in the room, it is almost noon, and the noon bell will ring soon.

She took out the bronze mirror, combed her hair slightly, gently combed her gray shirt, and sat down at the table with a generous and decent demeanor.

Although this question is simple, it is a bit clever to be able to figure out this approach.

Well, it's probably at the level of a five-year-old.

Rather, it depends on who comes, whether it is a man or a woman, an old man or a young man.

But it should also be made clear that it was only because no one had solved the problem for too long that I gave it a hand.

When- When-

The Xianjing noon bell rings.

Fan closed his eyes silently and smiled, imagining the cramped person outside the door, knocking on the door.

Three, two, one......

Nothing.

Fan couldn't help but twitch when he painted.

Is it so unpunctual?

Or maybe you're busy with business......

She then imagined the man who had put down his paperwork and hurried up the stairs.

Three, two, one......

Still nothing.

Or maybe there's something you can't get out of for a while.

Then, she began to imagine the person who was in a hurry to deal with the situation in front of her......

And so on, dozens of them followed.

Half an hour passed like this.

The dishes are cold.

Just when Fan was trembling with anger.

Finally......

Dong Dong Dong Dong –

He hurriedly took a breath and tried his best to calm down, and then pretended to be useless and said, "Enter." ”

As soon as the door opened, Shuzuo poked his head in: "Have you finished eating?" I'm here to collect the dishes......"

“……”

“……”

After an awkward silence, Shuzuo glared at the untouched dish and said, "That person didn't come?" ”

"Who? What comes? Fan Huashi turned his face and pointed to the seat in front of him, "There is an extra meal, you can eat." ”

"I've eaten it, the owner ......"

"Oh, then take it and feed it to the dogs."

"Don't, I'll eat!"

Shuzuo was forced to rush forward and sit down, grabbed the fast son and stuffed it one by one, and looked up and asked, "Pavilion master, do you eat it too...... I'm here to eat with you. ”

"Not hungry." Fan only tilted his head sideways when painting.

"......," Shuzuo said stiffly, "it could be ...... The solver has a temporary official outing, or someone passing by to solve it, and I don't know the rules in our museum. ”

"What are you talking about?" Fan Huashi turned his face sideways and said, "I'm not thinking about this at all, what kind of problem solver?" ”

"............" Shuzuo didn't dare to say much, only bowed his head and chewed.

Angry, angry, angry, the owner angry.

But she never wanted anyone to know that she was angry.

So they will pretend to forget about it......

Then I'll forget about it......

However, Fan Huashi shook his head again, and took out a pen and paper very casually: "By the way, the board is empty, it's time for a new question." ”

As she spoke, the bamboo pen in her hand seemed to be killing a pig, and Kaka slashed on the paper.

The left side of the book hurts to read.

When Fan finished writing when he painted, she even had a pain in her brain-

[Draw lots for fortune telling, each sign has 6 digits, a total of 1,000,000 lots, including all numbers from 000,000 to 999999.

[If the sum of the first 3 numbers of a lot is equal to the sum of the last 3 numbers, the sign is called auspicious.]

[Request: The sum of the numbers of all auspicious signatures is divisible by 13.] 】

"Pavilion Master! I can't help it! Shuzuo sprayed rice and stopped, "You are going to kill Zhu Qi!" He's afraid he's going to add up all the numbers!

”

"Whatever he wants." Fan slapped his pen when he painted, "Post it after eating." ”

"Then there won't be anyone working this afternoon." Shuzuo persuaded, "Curator ...... If I'm not mistaken, I'll solve two questions in a row...... Can be ...... with you Talking under the moon? ”

"That's right, I'm willing to have a deep friendship with someone who is good at arithmetic."

Shuzuo hurriedly put down the tableware, picked up the question and read: "But no one has been able to solve two questions in a row, and they all say that the second question of the hall owner is always unsolvable." ”

"The second problem is easy to solve, and the third problem is unsolvable." Fan Huashi chuckled, "It's just that I don't have a solution, so I wrote it out to solve it." ”

"It's easy to ???"

"Well, fifteen or sixteen years old is enough."

"But Zhu Qi will be considered dead!"

"Who is Zhu Qi?"

"This ......"

"Haven't finished yet?"

"Eat and eat ......"

…………

Before the time was over, Shuzuo had a heavy heart and pasted the new title on the board of the ink museum.

The people of the Ink Shop came after hearing the news.

"So fast? Aren't you going to have to wait for the next decade? ”

"You don't know...... The owner of the pavilion sat empty for half an hour, and did not wait for anyone. ”

“？？？ Dare to cool the owner's appointment? Is this in a hurry to go to the Westland Forest Farm? ”

"Shhh......h When the owner heard it, you went first. ”

During the discussion, I saw an ink man with black circles in his eyes pouring out.

"Take the question! I'm not going to leave tonight! ”

Everyone hurriedly got out of the way and asked this Mengshi to read the question first.

At this time, the left side of the book had just been pasted, and everyone stopped talking and carefully examined the topic.

Each signature has 6 digits, a total of 1,000,000 signatures......

If the sum of the first 3 numbers of a lot is equal to the sum of the last 3 numbers, the lot is called auspicious......

Request: The sum of all the numbers of the auspicious signature, divisible by 13. ……

This...... What is this???

It was Zhu Qi, who was also stunned on the spot, staring at the book and saying, "Pavilion master...... Is this what I want to do? ”

"The owner obviously doesn't care about your life or death!" Shuzuo only shook his head and said, "Don't forget it...... Can't count it......"

"Of course I know that......," Zhu Qi looked at the subject in despair, "to say that all the numbers are listed...... I may be able to write it all in a few days, but this question ...... Also add all the numbers together...... Divide by 13 to seek business...... Even if it's a museum, it's not a good idea, so it's obvious that you can only find a clever solution. ”

Just as he was talking, a few people next to him silently copied the question and walked away.

Only then did Zhu Qi react: "By the way, if this question can be solved...... It's a moon...... Oh! I spelled! ”

After that, he didn't delay any longer, and hurriedly copied the question and ran away.

Under his advice, many people also tacitly did the same thing.

The moon talks, that is, the meaning of deep dating are carried out one-on-one after dark by default.

There is no gender requirement in this conversation, but if two men have a dinner party, most of them will call it a wine conversation, emphasizing the moonlight will show that their relationship is not pure.

Therefore, over time, the moon talk was tacitly accepted that it was only between men and women who wanted to develop a relationship.

This kind of well-being is far more than a lunch at the opposite table, and even those who are not good at arithmetic are grinding their fists and want to give it a try.

There is only one sigh on the left side of the book.

I'm afraid that no one will do the afternoon work.