In the later period of Jian'an, Liu Bei repelled Cao Cao in Liangzhou, and in order to prevent Cao Cao from making a comeback, Liu Bei migrated Tianshui, Longyou and other Han people to Hanzhong to expand the population of Hanzhong.

Jiang Wei was moved to Hanzhong with his mother at that time, because he was good at reading since he was a child, he liked Zheng Xue, and when he grew up, he studied hard and studied hard, and he was quite talented, so he was recruited by the county in the past two years to be responsible for data statistics.

At this moment, he came to Shen Chen, bowed his hand to Shen Chen, and said, "Governor, now there are 1.77 million acres of land in Hanzhong, and 220,000 acres in Dingkou. ”

"That's all?" Shen Chen frowned: "I remember that the population of Hanzhong was more than 400,000 during the Zhang Lu period, and later His Majesty migrated more than 100,000 people from Liangzhou. Jiang Wei replied: "Yes, but later Hanzhong was divided into Hanzhong County and Shangyong County, and the population and land were divided. ”

"Oh." Shen Chen patted his head and said, "It was my negligence that I actually forgot about this, what about the two counties combined?" ”

"The two counties have a total of 2.57 million mu of land, and 440,000 acres of Dingkou."

"Where did the more than 100,000 Dingkou go?"

"I've moved to Bashu."

"Is there only such a little field in Hanzhong now?"

"Yes." Jiang Wei replied: "This is already under the governance of the deputy minister, and before the treatment, there were fewer acres of land. ”

"Are they all big acres?"

"Yes."

"What about the small acres?"

"There are 2.65 million mu of small land, totaling 5.22 million mu." Hearing this, Shen Chen frowned.

Shouldn't it, the Hanzhong Basin is so small? One acre of land in the Han Dynasty was different from later generations. At that time, 100 steps was a small acre, which was about 140 square meters.

Then two hundred and forty steps is a large acre, about 465 square meters. In later generations, one acre was 666 square meters.

According to the Hanshu Food and Goods Chronicle, the average labor force cultivated about 50 small mu, or 20.83 large mu, or 14.4 city mu, each household had 100 small mu, or 41.66 mu, or 28.8 city mu, and each household occupied 20 small mu, or 8.332 mu, or 5.76 city mu.

That is to say, if a family of five wants to solve the problem of basic food and clothing and taxes, it must plant 28 acres of 666 square meters of land to be able to maintain a living, and basically the farming ratio of each Dingkou is 1 to 8 Han mu.

At present, the total land in the Hanzhong Basin is only 5.22 million mu, which is 3.37 million mu of land, and according to the proportion, it can only afford 420,000 people.

Of course. In addition to the large and small acres of land, there are not a large number of vegetable fields, ponds, mulberry forests, and breeding land, which also belong to the category of cultivated land, which can also produce grain.

If these are counted, Hanzhong as a whole can support five or six hundred thousand people on cultivated land. It is probably the limit of Zhang Lu's presence in Hanzhong in history.

However, the Hanzhong Basin covers 5,000 square kilometers and the plain area is 1,400 square kilometers, and according to the number of acres, there should be nearly 3 million acres of land, and this is still calculated according to 666 square meters per mu in later generations.

If we calculate according to the Han mu, under normal circumstances, only the plain area is counted, and the maximum cultivated land area in Hanzhong can be more than 5 million mu, which is far from the limit.

So Shen Chen asked: "The area of Hanzhong is still very large, can you continue to reclaim the land?" Jiang Wei replied: "It can be cultivated, but it is limited by the water source." ”

"I see." Shen Chen immediately understood the reason. In the era of science and technology in later generations, industry was developed, and rivers were dug without a problem.

In ancient times, the level of technology was backward, and it was all done by manpower. Therefore, even if Hanzhong is rich in water resources, it is still very difficult to make water sources run through every plain, and it takes a lot of manpower and material resources.

The problem is that although there are still many plains that can be cultivated, they cannot be expanded due to lack of water.

Thinking of this, Shen Chen nodded, walked at the front of the team with his hands on his back, and said to Huang Zhong and Li Yan beside him: "In the future, when Your Majesty wants to go on the Northern Expedition, we will send troops from Hanzhong to attack Guanzhong, and Hanzhong will become a place to provide grain and grass, but at this time, Hanzhong is only self-sufficient, and tens of thousands of soldiers and horses can still afford to be stationed, but once the Northern Expedition is carried out, a large number of people are mobilized to serve in the army, and the grain and grass must be provided by Bashu. Therefore, we must try to hoard a large amount of grain and grass as much as possible, and in peacetime, we should hire a small number of people from Bashu to move grain to Hanzhong, and at the same time, we must vigorously develop agriculture, so that the land of Hanzhong and Shangyong counties can support our Northern Expedition. Li Yan said: "But the Metropolitan Governor, now that the cultivated land in Hanzhong has reached its limit, it is difficult to cultivate new fields." ”

"When you encounter difficulties, you have to think of a solution." Shen Chen said: "There are water sources everywhere in the depths of this big mountain, it depends on how we use them, have you heard of the terraced fields in Ailao County, Yongchang County?" ”

"Terraces?" Everyone looked at each other, in this era of underdeveloped information, not to mention that it was still in the deep mountains and old forests of Yunnan in later generations, where did they know where to go.

"Not bad." Shen Chen nodded: "The temperature in Hanzhong is suitable, suitable for growing corn in the north, and also suitable for growing rice, and there is abundant groundwater and abundant precipitation, so rice is better to grow than corn." If you want to cultivate agriculture, you need to dig more ponds, build canals, and dig up groundwater. The two are farming in the mountains, and in the upper reaches of the rivers in the mountains, terraces are cultivated. As a hussar general deeply rooted in the grassroots, Shen Chen can not only lead troops to fight when he gets on his horse, but also govern the country and the country when he gets off his horse, and at the same time he can work in the fields.

Let's not talk about his previous life, he traveled all over the country as a design dog before traveling, collecting style and architecture, and at the same time, he also learned about some rural life and crop planting.

The environment in which he lived before and after the crossing also allowed him to get in touch with the countryside and know about farming.

Before the crossing, his family was also from the countryside, and when he was a child, he also followed his parents to plant rice and farm, and went up the mountain to herd cattle and sheep

To "run Wu", it is necessary to first plant seedlings in dry land and then insert the seedlings into paddy fields. And more importantly, he was born in a small mountain village in a poor county in the south-central Hunan Province of the later generations, and their family's fields are terraced fields, and there is also the famous Purple Magpie Terraced Scenic Area in his hometown.

Therefore, Shen Chen is no stranger to the terraced fields, and he also plans to promote them in the south, so as to increase the population and grain production.

Hearing his words, the disciples who followed Shen Chen over at this time immediately began to make notes. This time when he entered Xichuan, Shen Chen's headquarters did not bring many soldiers and horses, including the Ganning department.

However, he brought Huang Menpai and capable disciples such as Zhou Tai, Deng Ai, Huo Yang, Wu Dang, Wu Tao, and Shan Yi to join the army, and the rest of Xie Hui, Zhang Li, Hu Wei, Li Qiu and others were civil officials, and they had been transferred to places that were not by his side.

Jiang Wei was originally a master of the plan, and he was a data officer, and when he saw Deng Ai and they were writing, he also wanted to write, but when he touched his body, he found that he didn't bring pen and ink at all.

He immediately looked at Deng Ai, and their gazes became different. It is still a smart student of Mr., and it turns out that when you follow Mr., you should carry a pen and paper with you.

But he didn't have a pen, so he was in a hurry, so he picked up a piece of firewood on the ground, stained it with some mud, and began to make notes on the paper.

Li Yan said at this time: "If this is the case, you should investigate the water sources in various places. ”

"Hmm." Shen Chen nodded and said: "Farming in the mountains is not as good as the plains, so it will be much scattered, but if you can find a relatively flat place near the water source in the mountains, you can establish a village, and for the people who are willing to go into the mountains to open up the wasteland, we should also support them, reduce or exempt the levy tax, and encourage them to produce more." If Hanzhong Shangyong can have 8 million acres of fields and millions of people in Dingkou, why can't there be grain for the Northern Expedition? As they spoke, they went north into Nanzheng County.

On the same day, Shen Chen convened a meeting of the generals and officials of Hanzhong, and now Liu Bei's group is mainly recuperating and recuperating, but they must be ready to prepare for war at all times as the front line.

The problem in Hanzhong is the difficulty of transporting grain, and historically Bashu has always been a big granary under the governance of Zhuge Liang, and there has never been a shortage of grain.

Zhuge Liang also used Hanzhong as a grain and grass base, but even so, he often had to stop the Northern Expedition due to lack of food.

This shows how serious the grain road problem is for the southwest. At the meeting, Shen Chen summed up some of the difficulties that Hanzhong is currently facing, such as the poor roads for transporting grain, the low grain productivity, the small number of dingkou, and the fact that in the event of a war, the dispatch of conscripts and people will almost hollow out the youth and strength of Hanzhong.

It stands to reason that he has just arrived in Hanzhong and does not understand the actual situation, but he directly talks about these things in a meeting, which inevitably feels like he is talking about it and being unrealistic.

But no one thinks what he said was wrong. Because these are all things that Xu Shu summed up, Zhuge Liang also visited Hanzhong and thought that these were indeed the predicaments of Hanzhong.

So what Shen Chen said is actually a cliché, and there are shortcomings that have existed in Hanzhong for a long time. So how can that change?

Shen Chen did not give guidance at that time, but thought that he should first inspect Hanzhong, personally walk around the country, and then make conclusions.

After the meeting, Shen Chen summoned the Hanzhong County Shangji Peng named Jiang Wei. The backyard of the Taishou Mansion in Hanzhong. It was late afternoon, and the sun was about to set.

The weather is gloomy, as a basin deep in the Qinling Mountains, the precipitation here is very abundant, and the upper reaches of the Han River are also collected by rainwater.

It hadn't rained yet, and after a meeting with the generals and officials in the afternoon, Shen Chen temporarily lived here.

The soldiers brought were led by Zhao Yun and Pang De and stationed in the military camp outside the city. Except for the bodyguards Shan Yi, Wu Dang, and the outstanding disciple Deng Ai, the rest of Shen Chen's side have now returned to the barracks and assumed their responsibilities and obligations as middle-level officers.

Under the courtyard corridor, Shen Chen sat cross-legged on the ground, Deng Ai sat beside him, and Jiang Wei sat cross-legged on the opposite side.

Jiang Wei looked a little nervous. Because what he learned was Shen Xue, in addition to Zheng Xue, he also governed "Zhuziyan" and "Shen Shijing".

Now the person who wrote these two books is sitting in front of him, and this feeling is like a law student in later generations, when he is in class, he suddenly looks up and finds that the old professor who taught him today is the lawmaker of our country.

"What's your name?" Shen Chen asked.

"Jiang Wei, the word Boyo." Jiang Wei replied honestly. Deng Ai next to him was making tea, looked at him and smiled, then sent the brewed tea to Shen Chen, and made another cup for Jiang Wei.

"Since you are in charge of the county, you want to have some opinions on the affairs of the county." Shen Chen said: "Now that the Han family has perished for the second time, Your Majesty has followed the example of Emperor Guangwu to inherit the great unification in the south, and is determined to attack Cao Wei in the north and restore the Han Dynasty. Sending me to the northwest is to attack Guanzhong and return to the old capital, do you think we can do it? ”

"Yes!" Jiang Wei said without hesitation.

"Why?"

"Because as long as the gentleman is here, he will definitely be able to."

"Oh?" Shen Chen laughed: "Believe me so much? Jiang Wei bowed his head and bowed: "I also studied "Zhuziyan" and "Shen's Sutra", from which I can see that Mr. has great wisdom, so Wei believes that as long as Mr. is there, he will definitely be able to." "Sycophants.

Deng Ai and Shan Yi and Wu Dang, who were standing guard next to him, both rolled their eyes. Shen Chen laughed and said, "Hahaha, since you learn "Zhuziyan", then I will test you." In the third year of Jian'an, Xu Zi asked: "How to be one with body, mind, mind, and knowledge when things are outside?" "How did I answer?" Jiang Wei thought for a while and said, "Mr. said, the ears, eyes, mouth, nose, limbs, and body are not at ease to see, hear, speak, and move?" The heart desires to see, hear, speak, or move, but cannot have ears, eyes, mouth, nose, or limbs. Therefore, if there is no heart, there is no body, and if there is no body, there is no heart. But it refers to the body that fills the words, the heart that refers to the words that dominate the words, the meaning that refers to the activation of the heart, the knowledge that refers to the clarity of the mind, and the things that refer to the things that involve the words, are only one thing. If the intention is not in the air, it must be attached to things, so if you want to be 'sincere', you will be free to do something, and go to the desires of others and return to reason, then the conscience will be in this matter, and there will be no concealment. This is the work of 'sincerity'. ”

"Not bad." Shen Chen nodded with satisfaction, and then said, "This shows that you have indeed studied well, you have not answered my previous question, what do you think about the affairs of the county?" Jiang Wei said: "The problem of grain transportation that Mr. said is indeed an old problem, and Mr. is also thinking of a solution. If I want to talk about it, in addition to the problem of transporting grain, there are also the inconvenient transportation between Liangzhou and Hanzhong, the difficulty of rapid communication between soldiers and horses, and the increasing neglect of training and lax armament of the army. ”

"Hmm." Shen Chen sighed: "This is also a matter of no way, since the battle of Guanzhong, Hanzhong has not fought for two years, it is not easy to maintain a training state for a long time, to provide sufficient food to the soldiers, this is also a way to save." "If soldiers train every day, the physical exertion is huge, and they have to ensure that they have enough food and grass to feed, and the consumption will be very high.

Therefore, reducing training, for example, in the past, it was a three-day small training and a five-day major training, but now it has been changed to a small training in 10 days and a major training in 15 days.

"But since I'm here, I want to prepare to capture Chang'an, so naturally I want to change this situation, I will stay in Hanzhong for a few months, solve some problems in Hanzhong, and then go to Liangzhou." Shen Chen looked at Jiang Wei and said, "I heard that you are from Liangzhou, are you willing to go with me?" ”

"Naturally." Jiang Wei was overjoyed, and bowed his head and said: "I am a scholar of Shen Xue, and I hope to always follow Mr. to listen to Mr.'s teachings." ”

"Hahahaha." Shen Chen said with a smile: "Since you have learned my doctrine, you can also be regarded as my outer disciple, are you willing to worship me as a teacher?" Jiang Wei's eyes widened, and then he was ecstatic, and kowtowed without hesitation: "I am very willing, Jiang Wei, meet Shijun!" ”