Three Kingdoms: Cao Cao, please answer the question!

Cao Cao was surprised and said, "Can this be measured?"

"This is the knowledge that suddenly appeared in my head. For example, the sun does not always rise at sunrise and go down at night."

"The sun is more than a million times bigger than the moon? But it is so far away from us that it appears so small."

"The sun is more than thirty million miles away from us."

The speaker is emotional, and the listener is shocked.

"How big is Haori!"

……

Chapter 118 Ordering You as a Fertilizer Order

For Cao Cao, this knowledge is enough to make him happy.

He asked Yu Gengnian to tell him what he knew and heard from the rewards he received.

In fact, Yu Gengnian himself didn't know much. After all, those insights were just incidental, in order to let him understand the function of the telescope.

Ordinary telescopes can only magnify things several times before the eyes, and even finer ones can even magnify hundreds or thousands of times.

And Cao Cao is most interested in the vastness of the starry sky.

For example, if the stars in the sky turned out to be individual suns, those stars are very far away, and thousands of miles are only a small step in front of them.

The reason why they can be seen across such a long distance is because they are big enough and bright enough.

In front of these stars, the sun can only be regarded as a small ant.

Cao Cao yearned for the starry sky, but he couldn't climb it, which is really a pity.

Another thing that interests him is that light also has speed. Light can travel 80 miles in a second, and 21 miles in a year (one mile in the Han Dynasty was more than 400 meters).

No wonder the world does not know the speed of light.

After listening, Cao Cao could only sigh with emotion how big the world is.

People are so small.

After recovering from a trance, he said: "I will let you supervise the construction of this telescope. After I return to Xudu, I will order you to enter the Taifu and give you the post of administrative order."

Yu Gengnian said repeatedly: "Thank you, Prime Minister, for the reward!"

Cao Cao nodded: "Make the telescope as soon as possible."

After Ping Tui Yu Gengnian, Wen Pin said: "When I was looking for it, I met Sun Quan and Liu Bei's people, so I beheaded a hundred of the enemy's heads."

It turns out that Wenpin was not the first to find Yu Gengnian, but Liu Bei's subordinates.

Afterwards, Wenpin took Yu Gengnian back, but Yu Gengnian didn't mention it just now.

"Yeah!" Cao Cao nodded and said, "If the telescope is useful, I will reward you very much."

"The matter of Xiling is over, I need to go back to Xiangyang, you follow me."

"Yes!"

……

This is just a small episode.

Of course Cao Cao was not idle all the way, and ordered Xun You and Cheng Yu to return to the battle situation. When he learned that there were only [-] people left in the end, Cao Cao's face was extremely dark.

I don't know whether to win or lose this time.

He ordered the two to return to Xudu, and asked the generals to lead the army to guard the east and west of Wuling County.

The east is naturally guarded by Lingling County, Changsha County, and Guiyang County.

If you are lucky, you may be able to catch Liu Bei.

To the west is Yizhou.

Cao Cao wanted to control Yizhou after Hefei, Xiliang and the north were pacified.

Jia Xu is right, the country needs peace and security before expansion.

It took several days before Cao Cao returned to Xiangyang, where he met Jia Xu.

Jia Xu is only six years younger than Cheng Yu, and is eight feet tall, with a majestic appearance and a domineering eyebrow.

It can also be said to be an old man.

"I've met the prime minister!" Jia Xu said eagerly, but still bowed his hands.

"Come on, why is Wenhe looking for me?" Cao Cao asked.

Jia Xu took out a book with a few large characters on it, as if you knew what to ask.

Basic knowledge of fertilizers!

"It is for this reason that such an important book will be used for the present and for the future."

"The prime minister, please entrust this matter to me, and I will do my best!"

Jia Xu is still a counselor at such an advanced age, he is the same as Cheng Yu, the so-called money has long been ignored.

The reason why he is still "old and vigorous" is that he wants to live forever and leave his name in history.

And this book made Jia Xu see this possibility.

Cao Cao knows Jia Xu's ability.

But Jia Xu is a poisoner, and his strategy is unparalleled, and it seems a bit overkill to use it for fertilizer.

"Now the war in Jingzhou is undecided, and the three southern counties are not under control, you..."

Before Cao Cao finished speaking, Jia Xu scrambled to reply: "I will finish it together!"

Its voice is sonorous and powerful, and it is resounding.

Jia Wenhe is so confident.

Cao Cao laughed and said, "Then I will leave these two matters to you!"

"Since you want to do this, I will order you to be the Jingzhou Fertilizer Order. This may be the first fertilizer order in the world!"

the first!

Although the name sounded bad, Jia Xu didn't care about it. As long as he did the job well, who would laugh at his official position in future generations?

Everyone only knows Jia Xu, the promoter of fertilizer, the great man who solved the problem of food and clothing in the Han Dynasty.

"Follow the prime minister's orders."

Having said that, Cao Cao is more concerned about the three counties of Jingzhou.

He said: "After taking down the three counties of Jingzhou, Jingzhou was completely under our control."

"At this time, Sun Quan is in Yangzhou and sent troops to Hefei, so we can take Jingzhou without any scruples."

"Liu Du, the prefect of Lingling County, Han Xuan, the prefect of Changsha County, and Zhao Fan, the prefect of Guiyang County, are all brave and foolish people. Xu Xiaoli, no matter how large the army is, they will surrender in an instant."

"But what you need to pay attention to is Liu Bei. Liu Bei traveled south from Jiangxia, and he should have arrived in Changsha by this time."

"He may be able to convince Han Xuan that if Liu Bei annexes the three counties, it will no longer be easy to fight."

How could Jia Xu, who is a top strategist, not know this information?

He knew that Cao Cao told him that he wanted him to win the three counties as soon as possible, so as not to have long nights and dreams.

As for the fertilizer, things need to be put aside.

"Yes!" Jia Xu replied solemnly.

Cao Cao nodded and turned back to the matter of fertilizer. He said, "I will not only promote this fertilizer in Jingzhou, but also other states will produce fertilizer."

"But this matter needs to be worked out gradually. It may not be possible in a year or two. After you win the three counties, you will concentrate on this matter."

Jia Xu nodded happily.

Things were prioritized, and Jia Xu didn't stay in Xiangyang for a long time.

He generally knows the things in the south, so Cao Cao doesn't need to explain too much.

The reason why Xun You and Cheng Yu were recalled and replaced by Jia Xu was because Jia Xu had a more precise control of the current situation in Jingzhou.

The next day Cao Cao received the news that Jia Xu was going south, and at this time, the remaining four good generals also came back, Cao Hong and Cao Chun followed.

In the south, Cao Cao left generals such as Zhao Yan, Xu Chu, and Man Chong.

When they saw Dian Wei, these people couldn't hide their surprise on their faces, and of course they couldn't hide it at all.

"It's really resurrected!"

"This muscle, this appearance, is exactly the same as before."

"Zap, it's amazing."

It is easy to cut alone!

Dian Wei was speechless looking at the generals surrounding him.

"It seems that Sun Jian's resurrection is real, so Sun Quan has already been exposed to answering questions, which is not good!" Xu Huang frowned.

The five sons of good generals are first-rate generals in the world, and each of them is at least a second-rate adviser.

They immediately figured out the question and were deeply concerned.

Cao Cao felt that there was no need to hide the news from the answering space from his subordinates, so he told the news from the answering space to the five good generals.

"I see, but what exactly is an answer space?"

"If we can find its source, maybe we can know its purpose!"

Zhang Liao felt that this was very necessary. Through the history of ancient, modern and future, no matter how much the Four Books and Five Classics were read, people in the Han Dynasty could not think of the reason why the space for answering questions existed.

"That's the method of the immortal!" Le Jin said that he didn't want to participate in the war, and the immortal is an existence that cannot be desecrated.

This discussion is ultimately inconclusive.

In the end, I returned to the Hefei matter!

……

Chapter 119 Debridement and Suture

"Hefei is indeed a top priority."

Zhang He understood what the prime minister meant by asking them these things. It seemed that the prime minister wanted to choose one of them in Hefei.

After occupying Jingzhou, Sun Quan felt the crisis, and now Hefei has gathered [-] soldiers and horses.

Everyone suspects that Sun Quan has the idea of ​​jumping over the wall in a hurry.

"If Hefei is built, then the prime minister can start from Jingzhou and Hefei at the same time, can Jiangdong hold it?" Zhang He asked others.

Cao Hong and Cao Chun were at the side, and they both shook their heads.

"So Sun Quan is determined to win Hefei?" Cao Hong said.

"Yeah!" Zhang Yun nodded and said, "Sun Quan himself has Jiangdong affairs, so he probably won't go to the Hefei battlefield."

"Attacking Hefei will generally be Zhang Zhao and Zhou Yu."

"Prime Minister, I think we can send an envoy to persuade Zhang Zhao first, he approves of the Prime Minister!"

Everyone here is very familiar with the situation in Jiangdong.

Zhou Yu is the main combat faction, while Zhang Zhao is the main descendant faction.

Before the war, Zhang Zhao persuaded Sun Quan to surrender because Cao Cao went south, but how could Sun Quan agree?

Therefore, Zhang Zhao was sent to Lujiang County, and he was not allowed to participate in the affairs of Jingzhou.

Cao Cao thought for a while and said, "It should be true. Even if Zhang Zhao is still loyal to Sun Quan, Sun Quan may not trust him anymore."

"This is our chance. If the Jiangdong clan's opposition to Sun Quan and the Zhang Zhao faction also wavers, it will make Jiangdong even more chaotic."

"And we can take advantage of the chaos and enter."

The specific matters need to be reported from Hefei. Cao Cao doesn't plan to stay in Xiangyang for a long time. He has to go back to Xudu first, and then start preparing for the north.