Zheng Lang walked around Chang'an for three days, and also went to the upper reaches of Danshui to take a look.

However, it was at a loss.

In his thoughts, the Tang Dynasty had already built a part of the water conservancy, transported the materials to Shangzhou, and then entered Guanzhong from Lantian Pass, and the Tang Dynasty in Guanzhong built a canal to directly enter Chang'an City.

It's not that it didn't work, after the Anshi Rebellion, Henan was lost, and it was from this way that most of the materials were continuously transported to Guanzhong, supporting the Tang Dynasty army and the rebels.

It seems that this transportation road by land and water has always played a role in the Ming and Qing dynasties.

Ouyang Xiu also said this in his book last year, the old canals of the Tang Dynasty were wasted, the Weishui was blocked, and there were three dangers. Therefore, he came up with a way, Liu Bang entered Qin, not from the east of the Guandong to Nanyang, the minister asked to Nanyang, asked his widow, Yun from Dengxi to Yongxing (Chang'an) six or seven hundred miles, now small businessmen often do. Liu Bang entered the customs, his soldiers were 100,000, and the road to accommodate 100,000 soldiers should not be too narrow and dangerous. But since Luoyang is the capital, the travelers tend to the east of the country, and its road has been abandoned for a long time. Now according to the seeking, then Wuchang, Hanyang, Ying, Xiangyang, Liang, Yang, Jin, Shang, Jun, Fang, Guanghua along the Han Dynasty 12 states, can be Caodun Nanyang. Since Nanyang is a light car, people are transported, and the fifteen or sixteen shops of the soldiers are paved, and the things of more than ten states are said to enter the customs endlessly.

Sling the bull.

An army of 100,000 can work, not together, but in batches.

This mountainous road is not narrow and dangerous. Six or seven hundred miles down the mountain road, the freight and loss will be sky-high. If you want to open up this road, you can't change from the downstream of Danshui in Nanyang to dry road transportation, you must open Danshui and connect the channel to the middle reach, so as to enter Guanzhong from Lantian Pass, otherwise the materials transported are not enough to be lost. Ouyang Xiu has not studied history in detail, Wu Zetian and Tang Zhongzong have already started to open up this road, and the effect has not been significant. When it came into play, it was in the Anshi Rebellion. And it is impossible for these state capital materials to be transported to Guanzhong from this road together, and some state capitals seem to be in the Hanshui basin on the map, but in fact, there are dozens of mountains separated by them, and they cannot be transported to Hanshui at all.

This passage refers to the Han River all the way to the Yangtze River, extending to Dongting Lake, and south to Tanzhou, which can transport these materials close to the Han River, the Yangtze River and the Hunan River to Guanzhong. Don't think about the rest of the place.

But after reading it, he shook his head again and again.

The water sources in Guanzhong have decreased, and the water conservancy of the Tang Dynasty cannot be restored, and if you want to open up, you must spend a huge price. Now that the two sides are at war, the imperial court can't come up with this money at all.

And thinking about Tanzhou, there are also many difficult places.

Tanzhou is Changsha.

China's development of the south, starting from the Jin Dynasty, moved from the Eastern Jin Dynasty to the south, and the population began to increase. Lay the foundation for the prosperity of Jiangnan in the future. Until the Tang Dynasty, the main areas of development during this period were in the Taihu Lake basin and Hangzhou, Wuyue. Then in the Song Dynasty, the population was large, and they had to find ways to increase the area of cultivated land. Then there was Jiangdong Wei.

The Southern Song Dynasty moved south and developed to Tanzhou, which was the beginning, and it was not until the Ming Dynasty that Changsha became the four major rice markets.

The development of Changsha and Dongting Lake basins has natural geographical factors, but at this time, there are several unfavorable factors due to the pressure of Meishan barbarians. If the Dongting Lake basin and Changsha cannot be well developed, it seems that the cost of opening up the Danshui basin is very huge, and the significance of development has been lost.

It is also necessary to dig out the potential from within Shaanxi.

After returning from outside the city, Zheng Lang called Xia Zhu to discuss the matter of Sanbaiqu.

Sanbai Canal is also called Bai Canal, Han Wu Zhao Zhong Doctor Bai Gong suggested and repaired, the diversion of Jing water first from the valley mouth, the tail into Liyang, into the Wei River, and Zheng Guo Canal together called Zheng Bai Canal, is the most important water conservancy project in the Han Dynasty.

At the end of the Tang Dynasty, many water conservancy projects were gradually destroyed due to long-term disrepair. Therefore, when Song Taizu, Shi Jiye, the judge of the festival, presided over the Han affairs of the Sanbai Canal, and hastily built a temporary surname building with a slightly inlaid fence stack in the water weir in Jingshui. Although it is grassy, it has also produced an effect, and the people of the edge canal have benefited from it. But because of its sloppiness, every time it comes to the flood season, it will be washed away, so every autumn to control the weir, the use of the retake of the people, the people are troubled by several servants, can not be fixed.

During the time of Taizong of the Song Dynasty, at the request of the people, the stone masonry of the general was restored to reduce the heavy burden of repairing the weir every year, so he sent the supervisor to repair it around Zhou. Because the project is huge, it was not completed. Chen Yaosuo and Liang Ding wrote again, Zheng Bai Erqu, the original irrigation land of 44,500 hectares, now the survivors are less than 2,000 hectares, please the imperial court to repair the weir. Huang Fuxuan and He Liang were sent to investigate the site again, and the two put forward four suggestions, which could not be implemented.

When Song Zhenzong, he sent Shangbin to plan and organize the repair of the Sanbai Canal, and Shangbin probably repaired the water diversion channel project of the Sanbai Canal, restored some water-saving bucket gates, and the water conservancy was completed and the people were rewarded several times. However, the irrigation function of all the three white canals has not been restored.

This is going to be in the future, Wang Anshi asked Zhou Liangru and Jingyang Zhixian to check and put forward two suggestions, one is to build a weir from Hongkou to build Jingshui, dig a new canal 15, go to the east of Linjing Town into the white canal, can irrigate more than 20,000 hectares. The second is to open a canal from the north of Hongkou to the third limit, and then open 50 miles to connect the Yunyang boundary of Yaozhou, which can irrigate more than 30,000 hectares. The second option is more labor-intensive and costly than the first, but the benefits are more significant. So Song Shenzong adopted the second plan, and Yang Pan and Hou Ke organized the construction.

This project has enabled the Sanbai Canal to irrigate more than 35,000 hectares of farmland. One hectare is a hundred acres of land, and if the project is successful, from Jingyuan Road to Huanqing Road, there is almost no need for the imperial court to support food.

Zheng Lang called Xia Zhu and said that it was this second plan.

"There's a war ahead." Xia Zhu said hesitantly.

"If Yuan Hao attacks Sanbaiqu, it will be a disaster." Zheng Lang said.

What is the relevance of fighting a war in front and building in the rear?

"Money."

"You send someone to check first, as for the money, in another year, I will find a way to solve the cost of Jingyuan Road."

"Will you figure it out?" Xia Zhuhu asked suspiciously. Although he had a good impression of Zheng Lang, Zheng Lang had not yet come to Jingyuan Road, so he first withdrew three million yuan and sent it to Weizhou. In Xia Zhu's mind, Zheng Lang was scared, afraid that he would also be like Han Qi, asking Pang Ji for supplies and money did not arrive, so he grabbed the money in his hands first.

"Trust me."

"Okay, I'll arrange for someone to come and check it out."

"Xia Xianggong, you must pay attention to it. Fighting against the Tangut people would be a protracted war, not only in terms of the number of brave soldiers, but also in terms of weapons, logistical supplies, and food and grass. Once the food is settled, the chances of victory are increased. ”

"Xingzhi, I will send someone to see it, don't worry, but this matter is not up to me, I have to report to the court, and the court approves it before I can count it. In addition, the front line must be defended, otherwise the rear ditch will be opened and the enemy will be killed, which will be an extinction event. ”

"No, I don't want to be meritorious, but the defense is now a four-way strategy that won't go wrong." Including himself. After a pause, he said, "Also, you can write to Fan Zhongyan about this matter and ask him to participate together." ”

He winked as he spoke.

Xia Zhu pinched his nose and snorted bitterly.

It is only Xia Zhu's proposal, it is possible that the court will not approve it, and it will cause some impeachment, don't ask whether it is reasonable or not, if you want to talk about you, you can talk nonsense.

La Fan Zhong drowned in the water, he is the eldest brother of the Junzi Party, plus Zheng Lang, there will not be many people who oppose it, so it can be implemented. And Fan Zhongyan is different from Han Qi, Fan Zhongyan has a large belly and can tolerate things, as long as it is for the country, there will be no other bad ideas, and he will definitely support it.

Zheng Lang said: "This is war. Compared with marching and fighting, our dynasty may not be as good as the thieves, but compared with construction, governance, and wealth, the enemy is far inferior to our dynasty, and its strengths are used to fight its shortcomings. ”

"Fight for attrition."

"Exactly."

Xia Zhu's forehead, this plan is quite in line with his mind, and of course, it is also in line with Fan Zhongyan's thoughts.

Suddenly, there was a burst of laughter outside.

A burly man walked in, and Xia Zhu introduced Zheng Lang: "This is General Cao." ”

"I've seen General Cao."

"I've seen Zheng Xianggong."

"Don't call Xianggong, every time I hear it, I feel uncomfortable, or call Zheng Zhizhou."

Cao Cong laughed again.

The three of them sat down again, and Cao Cong said: "The imperial court has successively sent troops to the front, and the army I gave you is ......."

You know, in addition to some of the troops recruited this time are from Shaanxi itself, a large number of forbidden troops have also been sent from Hezhong, Henan and Beijing, and no matter where they go, they will be reorganized and requisitioned from Jingzhao Mansion. It is not difficult for Cao Cong to do some small tricks.

"Thank you, General Cao," Zheng Lang said.

Without Cao Cong's secret help, the imperial court was also very cautious about Jingyuan Road, Haoshuichuan was defeated, and all the elite soldiers were sacrificed, and Jingyuan Road was flat and not easy to defend, so the imperial court sent the most troops to Jingyuan Road, reaching 70,000 people, not including some local archers.

The overall number of troops has not decreased, but because of Zheng Lang's advice, the number of organized archers has increased. Unlike the original archers, these archers were all staffed, issued with some weapons and some allowances.

The military power has also increased compared to history, and of course, the cost has increased.

Zheng Lang was helpless about this.

can only do not let the tragedy of the battle of Dingchuan happen, otherwise the blow to the Song Dynasty is unimaginable.

Cao Cong asked again: "Zheng Zhizhou, who do you think has the right strategy, Fan Zhongyan or Han Qi?" ”

Zheng Lang didn't let him call Xianggong, so he changed his words, after all, it was only this big, and Cao Cong himself felt suffocated.

He didn't ask who was higher or lower between the two, but he was asking if the defense was right, or if the offense was right.

"Whose strategy does General Cao think is good?"

"Yuan Hao can't be underestimated." Cao Cong did not answer directly, but said this.

"Of course, you can't be underestimated," Zheng Lang smiled.

How beautiful was the battle of the good water river? Fan Zhongyan and Han Qi were treated by Yuan Hao as two monkeys.

Zheng Lang had a faint idea in his heart, and he didn't see the comments of later generations, it was his own idea. Yuan Hao started fighting in order to establish the confidence of all ethnic groups, and they kept fighting, and there was a deep blood feud between each other, and all ethnic groups would unite and become hostile to the Song Dynasty.

Zheng Lang uses archers as a compilation, and the surname is about the same, kill it, if you die, it was killed by Western Xia, and the people of the tribe will hate Yuan Hao in the future, and they will not be caught in the middle and fall on both sides.

But Yuan Hao launched too many attacks, first Sanchuankou, then Haoshuichuan, then Linfu Erzhou, and then Dingchuan.

This was a deliberate attempt to take advantage of the long border to constantly look for the weaknesses of the Song army, and to defeat the Song army one by one, so that the entire northwest would be eroded. If you think so, Yuan Hao's picture is very big.

However, Yuan Hao cannot be called a peerless genius.

First, he did not train a strong army, and the advantage of the Western Xia cavalry made him buried.

The second is that he has no long-term vision, which not only caused Princess Xingping of the Khitan to die inexplicably, but also disrespected the Khitan people. So Liao Xingzong, who had a worse vision, got the benefits of the Song Dynasty and led a large army to ask for the guilt, fortunately there was a gust of wind!

Although it won, after all, it is the Khitan, if the Khitan and the Song people are united, the Western Xia will be destroyed, just when the Song Dynasty sued for peace, so it agreed to negotiate peace. It was only about the Khitan expedition that changed his policy. Subsequently, the vitality of Western Xia was restored, and because of the effectiveness of the anti-plot of the seed master, many things happened in Western Xia, including the death of Yuan Hao himself.

That is, Yuan Hao has a vision of battle, but he has no talent for strategy.

You can take a look at the Tang Dynasty, which was subject to the Turks, sought satisfaction with grievances, and immediately counterattacked the Turks after dominating the world. Or learn from the Yue Kingdom in the Spring and Autumn Period, practice lying down and taste the courage, and succeed in one fell swoop. If it weren't for the conflict with the Khitans, with Yuan Hao continuing to fight, the Song army would be exhausted, and it would not be impossible for Western Xia to expand its territory to Yanzhou and Yuanwei.

Of course, Liao Xingzong's vision is even shallower.

In fact, the Song Dynasty and the Western Xia competed, and the Khitan could make a profit, and only one year because the Song Dynasty forbade discussion, the horses and furs sold to the Khitan cheaply could generate huge profits. Even in the end, the Khitan could take advantage of the decline of the Song Dynasty to invade Hebei.

In short, this is an era of starry fall, an era of literati, not a time when military generals are shining.

Zheng Lang's own military ability is not good.

But he has Di Qing in his hands, and there is another person, Chong Shiheng, and now the court has not paid much attention to it, so it is better to ask him to come over, and after the battle of Dingchuan, he will be returned to Huanzhou. Let him go with peace of mind and make the counter-plot go.

Thinking of this, Zheng Lang couldn't help laughing, this person is good, a knife that kills people without seeing blood, Tong Ming said that there is yin and yang, who can yin Mr. Lao Chong?

"Zheng Zhizhou, why are you laughing?"

"With General Cao's intentions, is Fan Zhongyan's strategy the best, or Han Qi's strategy?"

"Fan Zhongyan."

"Why?"

"No one in our dynasty can match Yuan Hao's military talent, if Yuan Hao is not moved, there will be a gap, and Yuan Hao can be found, then it will be another fiasco." Cao Cong kindly reminded Zheng Lang. Don't look at you as smart, but this is a war, not a Confucian monograph, the smarter you are, the easier it is to fall for Yuan Hao.

And the more Zheng Lang laughed, the more worried Cao Cong became.

After all, his recommendation to be the governor of Shaanxi is not a joke, but also a recognition of himself.

"General Cao, I know, and I won't be self-conscious. But do you think this method is appropriate? Fan Zhongyan built a wall and guard, it is not inappropriate. However, he wanted to build all the fronts into a fortress and build an iron bucket so that Yuan Hao could not invade. But what I don't understand is another question, starting from Fulin Erzhou, has been suppressing the army, this border is thousands of miles long, how many fortresses have to be built, how many soldiers have to be stationed in order to form this iron wall? Is it half a thousand, or a million forbidden troops? ”

That's a really serious problem!