After testing his skills, Zhang Twelve walked back satisfied.

Chen Qiaoxi's room was still lit by orange candlelight, because it was too late, the window was already closed, but the thin but full figure was reflected on the window lattice, and it was stretched very long by the candlelight.

Zhang Twelve didn't need to look to know that there must still be a thick account book in front of the figure at this moment, and he couldn't help but laugh a little:

This stupid woman doesn't care about herself too much, right?

You still have a few years left in your youth, aren't you afraid of boiling yourself up?

Zhang Twelve wanted to go back to the house directly, but after thinking about it, in this Lu family, it seems that only this woman is good to herself, and Lu Fujing criticized when she bullied herself - although it didn't work very well, people at least took care of him in their hearts!

If you treat me as a countryman, I will repay me as a countryman!

Thinking so, Zhang Twelve walked over, raised his hand and knocked on the door - the sound of "pop pop" seemed to be a little dirty, but there was a way, it was really "pop pop" sound!

The figure in front of the window was stunned, and said softly: "Who?" ”

My body was so stiff that I almost knelt there...... This woman's voice was so charming, she quickly sorted it out and said, "Miss Chen, it's me." ”

Chen Qiaoxi naturally heard whose voice it was, but he was a little puzzled, why did he come to knock on his door so late?

Maybe he thought of some inappropriate scene for children, and his face turned red again, but he still walked over and opened the door unconsciously.

"Zhang Gongzi, it's so late, is there anything wrong with you?"

The body was leaning against the door, stretching lazily, anyway, that means - if you have something to say, want to come in? No way!

But Zhang Twelve didn't understand what she meant, but "chuckled" in his heart: She's straight-chested and twisted her waist, won't she be seducing me?

Uh, should I go in or go in?

"I'm almost over, and Miss Chen is still reading at night, isn't it, or is she calculating the account book?"

"Hey, thank you Zhang Gongzi for your trouble. The little woman's qualifications are mediocre, and the work that should have been completed during the day has to be delayed until late every time, which makes Zhang Gongzi see the joke. ”

It turned out that she thought too much about herself, and thought about other people's kindness, so she couldn't help but be a little shy and embarrassed, but fortunately, Zhang Twelve didn't know what she was thinking, otherwise she would have to die of shame.

"Miss Chen, can you let me go into the house and look at your account book? Maybe I can make Miss Chen's arithmetic speed several times faster! ”

Zhang Twelve, this is not bragging, not to mention the rest, just the replacement of Chinese characters from one to nine with Arabic numerals, it is estimated that the arithmetic time of this era can be greatly improved, not to mention that he is also proficient in the advanced operation of addition, subtraction, multiplication and division - don't laugh, addition, subtraction, multiplication and division in this era, it is indeed very advanced, okay?

Chen Qiaoxi pursed her lips, a little crying and laughing: Is this person really stupid or fake stupid?

I said that my qualifications are mediocre, but I am just modest, right? Do you think I'm really slow at arithmetic? I'm so much faster than those bookkeepers, okay?

Your poems are better than mine, but this arithmetic may not be as good as mine!

And said that you can make your arithmetic speed several times faster, and you can blow it too well!

It can be seen that Chen Qiaoxi is unconvinced of what Zhang Twelve said.

But the body moved uncontrollably, gave up the position at the door, and then said charmingly: "Then bother Zhang Gongzi!" ”

Zhang Twelve listened to this numbing voice, smelled the faint aroma, and his heart fluttered again, and the whole person slid in.

Chen Qiaoxi looked out of the door like a thief, except for the mottled shadows of the trees reflected in the moonlight, there was nothing else, bit his lip, and then closed the door.

…………

The long night, the stars and candles, the fragrance of mugwort, and the lonely men and widows inevitably make people's hearts ripple.

Zhang Twelve pinched his thigh and secretly reminded himself: Remember what you are here for!

Then he sat down at the table, picked up the brush on the table, and began to look through the ledger.

Not to mention, I really don't have a clue when I look at this account book, it is densely packed with small characters, and it is easy to get dizzy when I read it, I really don't know how this woman saw it.

Frowning and flipping, Zhang Twelve subconsciously bit the other end of the brush - this is a bad habit that Zhang Twelve developed when he was in school, he wanted to bite the pen as soon as he took it, but he didn't expect it to be the same in a different era.

But don't say it, a big family is a big family, even this head is fragrant, sweet, and the taste is much better than the ones he has bitten before!

And Chen Qiaoxi looked at the scene in front of him, opened his mouth and froze on the spot, pointed at Zhang Twelve, and said Mumu: "You, you, you, ............"

How can you bite my pen! That's what I usually bite!

Yes, Chen Qiaoxi also has the same bad problem as Zhang Twelve, that is, he also likes to bite the pen.

"Huh? What's wrong, Miss Chen? ”

"Ah...... No, nothing...... Zhang Gongzi, are you still used to using this money? Why don't I get you another one? ”

"Don't bother, this one is very easy to use, and the pen is sweet and fragrant, especially good!"

Chen Qiaoxi covered her mouth and didn't speak again.

Isn't this an indirect ...... Oh~ It's embarrassing! A face turned red again into an apple.

Zhang Twelve didn't know what was going on, but looked at Chen Qiaoxi a little speechlessly, you blush too quickly and too often, right? Are you an apple in the flesh?

…………

After looking at it for a while, Zhang Twelve sorted out his clues.

This ledger is quite chaotic because of the full Chinese characters, but in fact, his difficulty is not difficult for a primary school student.

Addition, subtraction, multiplication and division! The primary school students of my Great Celestial Empire are familiar with the road that can even control the king pesticide and eat chicken, this thing, the wood problem~~

Now that he has sorted out the clue, Zhang Twelve quickly converted the Chinese characters above into simple Arabic numerals and arithmetic symbols of addition, subtraction, multiplication and division, and divided five by two, and it took only a quarter of an hour to get it all done!

After checking the numbers on the ledger, I found that most of the data on it were correct, and only a few numbers were added in two places, so the calculation was wrong.

Zhang Twelve immediately told Chen Qiaoxi about this result, Chen Qiaoxi then calculated the two mistakes by himself, and the final answer turned out to be exactly the same as Zhang Twelve's, and then looked at Zhang Twelve's eyes, it was no longer doubt, but shock and worship!

It took him a quarter of an hour to finish what it would take her days to complete.

Sure enough, it's faster than her algorithm, and it's not half a star!

This man can really surprise himself!

Staring at the strange number symbols on the paper, Chen Qiaoxi couldn't help but ask curiously: "Zhang Gongzi, what are these?" ”

"Numbers and arithmetic symbols."

Digit? Arithmetic symbols?

But Chen Qiaoxi has grown so big, why has he never seen it?

"What is this method called?"

"Zhang's arithmetic method!"

After thinking for a while, Zhang Twelve spoke.

(Do you want to see poetry slap in the face, or weapon slap in the face, or martial arts slap in the face?) Although Zhang Twelve will - but I want to see your comments, otherwise the single machine is so uncomfortable! ）