Liu Cheng said nothing wrong, after Liu Shui finished the addition and subtraction of the two large pieces of paper he produced, when he was tested by Liu Cheng, there was no need to count with his fingers at all, basically there was no extra hesitation, and he could directly say the answer.

This effect is quite normal.

Anyone who has done so many simple additions and subtractions in a short period of time can calculate quickly.

At this time, it was already late, and Liu Cheng was ready to go to bed and rest.

But Liu Shui, a person who hates less when he is experiencing the use of books, doesn't want to rest, and just wants to learn more arithmetic knowledge.

Seeing this, Liu Cheng once again wrote two sheets of paper for him to add and subtract questions, this time within a hundred.

Liu Shui took it and looked at it, and it was difficult.

Addition and subtraction within ten, when he was not skilled at first, he could calculate by counting his fingers, but now this is not possible.

He simply doesn't have that many fingers and toes to do this.

At the critical moment, Liu Cheng, who was the elder brother, stood up and sacrificed the vertical calculation method of addition and subtraction.

Liu Cheng wrote it vertically, first told Liu Shui about the rules, and then began to calculate step by step.

After Liu Cheng made a few vertical poses, he began to let Liu Shui do it himself.

Vertical calculation method is a very good calculation method, which can simplify complex numerical calculations and turn them into single-digit addition and subtraction.

After the devastation of Liu Cheng's previous two volumes, Liu Shui was very proficient in the addition and subtraction of the numbers, and in this case, after spending some more time and figuring out how to use it, he quickly discovered the benefits of this kind of thing.

"Brother! That's nice! That's really good stuff! ”

After Liu Shui experienced the good use of the vertical calculation method in his predecessor, he couldn't help but praise loudly, and the whole person was extremely happy and excited.

This is certainly good stuff!

This thing can appear in textbooks under the nine-year compulsory education system nearly 2,000 years later, which is definitely a very useful and practical thing, otherwise, it would not be qualified to be placed there for students all over the country to study......

It was late at night, Liu Cheng was already asleep, and there was still an oil lamp in the room where Liu Shui was.

Liu Shui was lying on the table, holding a pen in his hand, constantly writing and drawing, seriously calculating the topic......

Niu Fu didn't sleep either.

Not because of how industrious he is and doesn't want to sleep, but because he can't.

At this time, he was in Dong Zhuo's room, talking to Dong Zhuo about today's events.

"The affairs of the clan are their royal affairs, this time the little emperor directly issued a will, and Zong Zhengqing Liu Song's kid personally came out...... I think this is also a good thing, after all, Brother Cade was picked up by your father-in-law, and he looks glorious, and it is ......good for you to your father-in-law."

Niu Fu said cautiously.

One thing descends one thing.

Niu Fu, a guy who has always been lawless, was really honest when he was in front of Dong Zhuo's father-in-law.

They all seem to be careful when they speak.

Dong Zhuo nodded and did not speak, but turned his gaze to his other son-in-law, Li Ru, who had not spoken much.

After receiving Dong Zhuo's gaze, Li Ru paused for a moment before speaking, "Father-in-law, I don't think things are so simple.

After Liu Cheng's King Jing of Zhongshan, he talked about it himself on weekdays, let's just listen to Yile, but now Xiao Tianzi suddenly did such a thing, I am afraid that he has the intention of using this to win over this person.

Liu Chengxin came to Luoyang, there is no foundation, but this person has extremely high force, and the purpose of Xiao Tianzi to do these things at this time is self-evident. ”

Li Ru said this, paused, and then continued: "The little emperor is too young, obviously he can't think about so many things, and there must be someone else who plans these things for him." ”

Dong Zhuo nodded: "This is reasonable, after all, we are border generals, and when it comes to the qualifications to be officials, we are not as good as these guys."

We abolished the Son of Heaven and established a new Son of Heaven, and these people were trampled under our feet, so that we came out on top, and their hearts were naturally unbalanced and uncomfortable.

It's normal to make some small moves now.

These people are intertwined one by one, we have only been in power for a short time, and people's hearts are unstable, so we need to use them to calm people's hearts and stabilize order, otherwise, we will pick up a knife and cut them down one by one.

These people, which one is hacked to death, none of them lose! ”

After speaking, Dong Zhuo's tone couldn't help but increase, bringing out some killing intent.

Seeing this, Niu Fu on the side couldn't help but turn his head and secretly kicked Li Ru.

Because Dong Zhuo said these words, it was tantamount to agreeing with Li Ru's words, but not his own words.

Li Ru didn't answer Dong Zhuo's words, and he didn't see Niu Fu's action.

Instead, he waited for a while and asked, "Then for Liu Cheng, how will you face it in the future?" What kind of attitude should you have? ”

"Let's look at it for a while, the rest can be better than before, but when it comes to troops, don't move for the time being."

Dong Zhuo thought for a while, then said.

He is a military general, and he knows the power of soldiers and horses, so he takes it a little seriously.

"But, but father-in-law, it's none of Kid's business! It's the little Son of Heaven and those damn people doing it, Brother Kede, he ......"

Niu Fu made a sound, distinguishing Liu Cong, and he was uneven.

Dong Zhuo glared at Niu Fu, but after repeating it a few times in his heart, 'This is his son-in-law, he chose it by himself at the beginning', and then opened his mouth to explain to him: "This is the yang conspiracy used by those guys, after they do such a thing, Liu Cheng is so ceremoniously recognized as a member of the Han family, no matter what, I will be on guard against it in my heart, after all, he is different now than before......