Zhao Jiaren once heard a 20th-century joke. When a tour group went to the Yellow River, one of the middle-aged people shouted at the Yellow River with full of emotion and energy: "Ah! Yellow River! ”

Hearing this, the rest of the tour group was shocked. Everyone didn't expect that there would be a poet in the small tour group. The crowd waited with bated breath for the poet to say the next sentence that shook the earth. The middle-aged man pondered for a little time and continued to shout: "Why are you so yellow!" ”

Standing by the Yellow River, Taiwei Zhao didn't say anything. The Yellow River in front of him is completely different from the Yellow River in the 21st century, which seems to be flowing mud, and now the Yellow River is just muddy.

Although Zhao Jiaren didn't speak, his silent appearance made all kinds of associations among the people around him. Someone had already come up and said, "Captain, are you worried about whether this will be successful?" ”

Turning his head to look at this staff officer, Zhao Jiaren wanted to get angry, but he held back. He turned to the group of soldiers who were following him and said, "Do you believe in science? ”

The soldiers looked at each other, and after a while, Li Yun replied: "Whatever the captain wants us to believe, we will believe!" ”

"Huh. So I'm going to tell you right now, I'm a firm believer in science. I want you to learn science, use science, and understand science. Your children and grandchildren, both men and women, are required to learn, use, and understand science. Zhao Jiaren's tone was very tough. Because all the propaganda he saw when he was a child demanded that he believe in science, he naturally had this kind of thinking.

These basic worldviews rely on subtlety. In the 21st century, there are Ph.D. doctors of the True God Church who use their doctoral dissertations to prove that 'the earth is flat', because that's what the True God scriptures say. In the 21st century, satellites revolve around the earth every day, and there are still people who are so foolish that it is no longer possible to explain this matter simply by sensationalism.

"Also, what I'm thinking about isn't really the success or failure of this matter. If you do it scientifically, you don't have much success or failure. I'm thinking about environmental issues now. Comrades, I want to tell you that as long as I am still in power, as long as the society is still there, environmental protection will always be mentioned. Why? Because we're going to build that concept. It is necessary for soldiers, officials, members of the academy, and the people to have this concept. Only in this way can everyone suffer less losses, suffer less crimes, and take fewer detours. ”

Even though the expressions of these soldiers were confused, Zhao Jiaren still told his thoughts with a tough attitude. As the Grand Lieutenant of the Great Song Dynasty, Zhao Jiaren certainly has the right to take such a tough attitude.

The soldiers had never heard much about environmental issues, but seeing that Captain Zhao was so tough, Li Yun couldn't help but ask, "Can Captain Zhao give me a few words?" ”

"You haven't been to the Yellow River before, and you don't read much about it. In fact, the water of the Yellow River is very turbid and looks like mud. Zhao Jiaren said.

Li Yun and the others have been by the Yellow River these days, and they feel that the river is relatively muddy, but it is far from the mud. The staff officer of the 11th Division asked, "Captain, but I don't know why the Yellow River is not as muddy as you said." ”

"The cause of the turbidity of the Yellow River is human activities, frantically cutting down trees and violently cultivating farmland, completely destroying the natural environment of the original Guanzhong, causing irreparable damage to water and soil. Now the Yellow River is not muddy, because the Mongols do not kill one out of ten. When human activity decreases, this destruction is weakened. Zhao Jiaren explained what had happened. After finishing speaking, he turned his head and said coldly: "But I don't mean to praise the Mongols for killing people well!" Make no mistake about it! ”

Hearing the words that there is not one in the population of Guanzhong, the soldiers are also terrified. In the construction of the army in recent years, Captain Zhao has carried out various propaganda activities in the army, among which is to let many witnesses tell the situation. The Mongols broke through Chengdu and slaughtered the people in groups of fifty, and the corpses were piled up. Zhu Yusun talked about him hiding in the pile of corpses, dripping blood gushing into his mouth, and he didn't dare to move in order to survive. Speaking of this, Zhu Yusun couldn't cry by himself, which made the soldiers also choke.

After the Mongol army retreated from Chengdu, the Song general He Jing returned to Chengdu, which was riddled with holes, and collected 1.4 million bones in the city, and there were even more corpses outside the city, which were difficult to count. These gory figures are a reminder of the brutality of the Mongol army.

"Captain, we will never forgive these beasts." Chen Zaixing, a member of the society, said loudly.

"Never let these beasts go!" The soldiers shouted loudly.

"It depends on how well you have scientific knowledge. Let's go to the breach. After speaking, Zhao Jiaren took the lead in leaving the Yellow River. Not too far north from the Yellow River, a long ditch heads northeast. The Mongol captives played a significant role in the construction of the northern section of the ditch, which was dug by the Song commanders and fighters near the Yellow River.

Seeing that Zhao Taiwei came with the commanders, Dong Ruhai, who was in charge of the survey, said in a trembling voice: "Taiwei, we have measured it several times, the depth of this old river is lower than the current Yellow River, if the current channel of the Yellow River can be blocked after the river is excavated, the Yellow River can be diverted!" ”

The surveying department followed Zhao Taiwei to carry out longitude and latitude measurement, and was the first department to systematically receive scientific education. In the current crowd of the Great Song Dynasty, they are the most imperceptible group. However, Zhao Jiaren's imagination is still completely beyond the limits of these people's thinking, and the excavation of the Yellow River is already shocking, but not no one in Chinese history has done it. A hundred years ago, Du Chong did it, causing the Yellow River to go south to seize Huai. However, blocking the river channel to the south of the Yellow River and forcing the Yellow River to move north and north was done in history in the Han Dynasty, which was done thousands of years ago.

Before Zhao Jiaren arrived in Bianliang, he thought about it repeatedly, and he felt that there was not much point in having a war with the Mongols. As long as the Mongols suffered losses, they would not go head-to-head with the infantry of the Great Song Dynasty. The best way for Mongolia to feel the power of the Great Song Dynasty was to divert the Yellow River. Once the Yellow River was diverted, the Great Song Dynasty could move the front a few hundred miles north and occupy most of Henan and Shandong. With the Yellow River as the boundary to negotiate peace with Mongolia, Mongolia should agree.

For more than a month, after a lot of surveying work, Song Jun found the 'new river channel' with the largest drop, which was actually an old river channel. Looking at the nervous expressions of the surveyors, Zhao Jiaren smiled: "Don't worry, if it fails, I will shoulder the responsibility." As long as you do your best, I won't blame you. ”

Dong Ruhai's face changed greatly, "Captain, I'll definitely do my best." ”

Listening to the traditional speeches of the engineering dogs, Zhao Jiaren was happy in his heart. Polytechnic men are such creatures, they accept all laws and theorems, and it is easy to have this black-and-white attitude in academics. So Zhao Jiaren just patted Dong Ruhai on the shoulder and said, "Keep up the good work!" ”

The river is generally divided into three layers: upper, middle and lower. The upper layer is dug into a gap, and as the river flows away from here, the sediment and dead branches and leaves carried by the river are deposited here, and the river can easily block the river. It's like a small opening in the human skin, and after a while, the blood will automatically clot on it, blocking the wound.

The middle layer is a sedimentary layer of soil, and there is a technical difficulty in destroying it to this extent, if you dig directly from the top, it means that before it can be damaged to this depth, the water will wash down because of various leaks.

If you really want to break the embankment completely, you have to destroy the bottom of the river, and if you can dig a ditch as deep as the deepest part of the river, the river will roll out of this new outlet. It's like cutting off a human artery, and the blood will flow outward with a bang, and it can't be blocked.

In order to achieve this purpose, the Song army dug more than 20 meters deep and placed a series of powder kegs in the thinnest position, using a total of nearly ten tons of fine black powder. The Mongols also cooperated, and there was no harassment at all when the Song army was engaged in civil engineering. If the current physical strength of the Song army is consumed, the Mongolian army still has an advantage in physical strength. The project went very well, and now that the gunpowder was in place, all that was left was to try to blow up the embankment and divert the water to the north.

Zhao Jiaren likes to read historical records very much, which talks about the real majestic mountain of the river gourd plug.

In the third year of Emperor Yuanguang of the Han Dynasty (132 years ago), the Yellow River broke in Guzi (now southwest of Puyang), and the flood flooded to the east, invaded the Huai River basin in the south, and the sixteen counties were affected. First, Ji Di and Zheng were gaged, but they were unsuccessful. For the sake of personal gain, Prime Minister Tian Wei opposed the blockage, saying that the river was "providential" and could not be forced by manpower.

Twenty-three years later, in 109 BC, the Han court decided again to block the breach.

This time, Emperor Wu participated in the gagged Emperor Wu's personal commanders and ministers, Shen Baima and Yubi sacrificed to the river god, and officials carried firewood and grass from the general to participate in the construction. In order to gag the mouth, the bamboo of Qi Garden (a famous garden of the Warring States Period) was also cut down for emergency needs. The construction method used in the plugging is: "The tree and bamboo plug the mouth of the water, slightly spread and plugged the tree, the water is slightly weaker, and the order is dense, which is called the tree." He stuffed it with grass, and filled it with earth. There is a stone, and the stone is for it. "This method is similar to the current flat plugging method. After the gourd plugging was successful, the "Xuanfang Palace" was built at the plugging place. Later generations often used "Xuanfang" to refer to the construction of flood control projects.

Soon after the gourd was blocked, the Yellow River broke at the Guantao mouth on the north bank of the lower reaches and diverted to the north, called the Tunshi River. The Tunshi River is parallel to the Yellow River and plays a role in diverting and reducing water. 70 years after the diversion of the Tunshi River, the Yellow River broke again in Qinghe County, and then the breach continued, to the end of the Western Han Dynasty and the Eastern Han Dynasty, the Yellow River finally abandoned the old road to take the new river, the main river channel is then southeast, in the present Shandong Qiancheng into the Bohai Sea, this route is similar to the Yellow River in the 21st century.

Zhao Jiaren has never advocated monopolizing knowledge, and related materials such as "Historical Records" and "Book of Han" have been taken out for everyone to see. Fortunately, Zhao Jiaren's direct leaders are soldiers, and if they were literati, they would probably be scared to death now.

Looking at the deep pit and the barrels of explosives, Zhao Jiaren closed his eyes. At this time, he suddenly felt that he had a new understanding of history. Those heroes are celebrated forever because they set the upper limit of history. Let future generations see how great human beings can be. And those scum villains create a lower limit, allowing people to see how far humanity can fall. When Zhao Jiaren wants to change the course of the Yellow River, at least China's glorious history is used as a signpost.

Thinking of this, Zhao Jiaren opened his eyes and ordered loudly: "Order the troops to assemble." I have something to say to you! ”