Li Bing was also very hesitant.

If you choose a compromise solution, you can also resist flooding to a certain extent. But if he wants to achieve the perfect solution, he must dig through the rocks.

When he hesitated, he found Zhu Xiang and Li Mu to discuss.

At this time, the affirmation of his confidant can give him great encouragement.

Li Mudao: "I don't know much about water conservancy, but if you go to war, the two choices you are facing now are to use close to half or even more than half of the troops in exchange for the annihilation of the other party's army; One is to use less than half the price, just to repel the opponent. Is it? ”

Li Bing nodded: "Yes." ”

Li Mu said: "This has to be considered from many aspects. First, whether the annihilation of the other side will bring us more stability and allow us to recuperate; Second, will the king fully support me in exchanging casualties for the annihilation of the other party's army. ”

Li Bing said: "If my water diversion dam is built, even if there is a flood, the Chengdu Plain will not cause large-scale flooding. As long as the levee is not destroyed, it is a matter of success once and for all. As for the king's ......"

He didn't know much about King Qin, and he didn't know if King Qin would support him.

"Your Excellency is a man of great talent, he gave you 50,000 prisoners, and gave you another twenty years, which is far more than the manpower and time required for the construction of water conservancy projects in previous dynasties." Zhu Xiang said, "He just wants you to use an extraordinary price to achieve an achievement that shocks the world." ”

Zhu Xiang half-jokingly said, "Do you remember what I said?" Creating a spectacle is something that even the male lord can hardly refuse. Right, Zheng'er? ”

Ying Xiaozheng, who was sitting on Zhu Xiang's lap, snorted coldly and said, "I don't like it." ”

Zhu Xiang poked Ying Xiaozheng's face: "I really don't like it?" Don't like it? After that, it is not allowed to be repaired. ”

Ying Xiaozheng stretched out his hand to block his uncle's strange hand, and said angrily: "Okay, okay, I like it too." Since Great-Father has given so many people and time to his uncle, as long as he can make achievements within time, Great-Father Great-Great-Father will not interfere. ”

Zhu Xiang said: "With the guarantee of Zheng'er, who is also the male lord, you can boldly let it go, right?" ”

Li Bing couldn't cry or laugh. With the approval of a drooping child, I can do it boldly? Isn't it a little weird?

But what's even more strange is that when Ying Xiaozheng recognized what Zhu Xiang said about the psychology of King Qin, Li Bing really put his mind at ease.

"Besides, it doesn't have to take that long to dig the mountain wall." Zhu Xiang said, "Li Bing, when I confronted Fang Shi in the Xianyang Academy Palace, did you watch? ”

Li Bing said: "I watched it, it's very exciting!" ”

It was after watching the battle between Zhu Xiang and Fang Shi that Li Bing was so respectful to Zhu Xiang that he couldn't say anything when he first met Zhu Xiang.

Zhu Xiang said: "The kind of thing called black powder I use can facilitate the opening of the mountain. Although it is not very powerful, you can instantly open the rock by selecting the weak point of the rock, chiseling a hole with an iron nail, and then putting black powder in it to detonate it. If it is a rock that is difficult to chise, it can be cracked by burning it with fire and splashing water, and by expanding and shrinking it in the heat and cold contraction. ”

The power of black powder is very poor, and it cannot be used directly to open mountains. Later engineering explosives were all modern gunpowder, that is, at least yellow gunpowder. However, if the gap has been chiseled, and then the explosive expansion of the black powder bag can be used to easily open the rock gap, reducing the amount of work to open the mountain.

Zhu Xiang actually knew the formula of modern gunpowder, but he chose to hide it.

At a time when the ideology and underlying technology are still very backward, rashly using too advanced technology is tantamount to a child's sledgehammer, which will cause great harm to society. Even this kind of harm may cause even more serious civilization breaks.

As long as the power of gunpowder is discovered, it will be used in war. However, it is impossible to completely block the gunpowder preparation technology, and soon the combat readiness of several sides of the war will begin to escalate, and finally it will be a pot of porridge.

This is not an alarmist statement after Zhu Xiang read a few science fiction books and ancient unsolved mysteries, but a lesson that has already happened in modern society.

The modern earth is not a peaceful world, Zhu Xiang just lives in a peaceful country.

Outside of China, the people in some areas may be in feudal societies, slave societies, or even primitive societies.

As an agricultural researcher, Zhu Xiang not only looks for seeds and farms in China, but also goes to the world to learn advanced farming experience and find seeds with different traits.

At the same time, as a responsible and suffering power, China will always use assistance to exchange interests with other countries in distress to obtain what it wants, rather than plundering it directly.

Agricultural researchers have always been at the forefront of international assistance.

As an outstanding young professor of agriculture, Zhu Xiang went to the frontier as an undergraduate, South Asia as a graduate student, Latin America as a doctoral student, and Africa at least once a year when he was taking graduate and doctoral students.

Therefore, Zhu Xiang knew very well that when those countries that were economically and culturally backward suddenly got advanced weapons, what was brought about was not technological progress, but the complete collapse of the civilized society that had finally sprouted, and the further plundering of internal resources.

Zhu Xiang was able to take out the black powder because now that Fang Shi had started to fry the furnace, it was very simple for him to explain the principle. Moreover, the power of black powder is extremely poor, far inferior to crossbow arrows. If you change to a divine archer, such as Li Shimin, black powder is not as good as a bow and arrow.

Therefore, many people who don't understand it say that "Huaguo invented gunpowder but used it to set off fireworks" is completely nonsense.

The use of black powder in war has been very thorough, but it is only because of the disadvantages of black powder that the Qing government, which is good at riding and shooting, is more despised, and the Qing government does not dare to develop its own technology - because if it is released to develop its own technology, the Han people, who occupy the vast majority of the population, will definitely have the most technical talents, so they gradually fall behind.

In fact, the Qing government was not pulled down too far in the era of black powder. It was only after the advent of modern gunpowder that the Qing government fell into a complete disadvantage.

Zhu Xiang did not continue to recommend coal to the Qin king, also because the accumulation of basic scientific knowledge and technology was not up to standard.

Coal contains a large number of impurities, and without cleaning technology, it is full of toxic smoke when burned, which is difficult to use.

Although the technology he knows can initially use coal, if the Qin King is now extensively mining and using coal, it will cause a lot of waste of coal and the environment will be greatly damaged.

At this time, people don't have the skills to patch the environment. Two thousand years later, when the earth was depleted of coal and the environment was seriously polluted, he was a sinner.

However, he left behind a study of the basics of how to use coal, waiting for future generations to study on their own.

He also left behind a map of the world's minerals, including coal mines, and prepared to make a mythological book similar to the "Classic of Mountains and Seas" to be handed down to future generations.

Zhu Xiang thought very much, is what he left behind a treasure map?

However, musketeers are less expensive to train than archers, and can be used to supplement ranged troops. He didn't mention this matter, King Qin should have thought of this.

Now that Zhu Xiang has used black powder on the opening of the mountain, I am afraid that it will accelerate the research and application of black powder by King Qin.

"Black powder can open mountains, can it also blast open city walls!" Li Mu's eyes lit up suddenly.

Zhu Xiang sighed in his heart. is worthy of Li Mu, who immediately grasped the key.

Zhu Xiang said: "The earthen wall will shatter when it is bombarded, which is similar to using siege wood; But to blast open the walls of the main city, black powder is not powerful enough. When everyone still doesn't know that there is black powder, use black powder to pretend to be a thunderbolt, pretend to be a ghost, and make the enemy surrender directly, I am afraid that the success rate will be higher. ”

Li Mu touched the stubble on his face, with a weird smile on his face, and began to simulate a blueprint for conquering the city in his mind.

"Ahem, I'm talking about building a dam, don't go off-topic." Li Bing coughed dryly and said, "Let's choose a hill to experiment first." ”

Zhu Xiang said: "It is necessary to formulate a detailed safety experiment process and be careful of blowing up people." ”

Li Bing nodded: "Yes." ”

Zhu Xiang was very happy. Working with a rigorous engineering friend is comfortable.

After they decided to open the mountain, Li Bing was busy preparing the experimental site.

When the experiment is successful, he will search for the materials of black powder and train talents who can use black powder.

The latter will be very difficult.

Thunderbolts and flames have always been considered the abilities of the gods, and it is a great challenge for Li Bing's organizational ability to get the craftsmen to recognize that they are just "techniques", to learn and master them without fear, and to strictly adhere to the confidentiality process.

Zhu Xiang: "I believe in you!" ”

Li Mu: "You are the county guard, you should do these things yourself." ”

Li Bing: "......" His hard backing, his best friend, how did he suddenly become like this? Why did he suddenly have the idea of breaking up?

Zhu Xiang: "I still want to continue breeding. ”

Li Mu: "I'm going to go to the border of Chu to hang around." ”

Zhu Xiang and Li Mu: "If you work hard, we will support you in our hearts!" ”

Li Bing was so angry that he brushed his sleeves away, and Zhu Xiang and Li Mu laughed crookedly behind him.

Ying Xiaozheng sighed angrily: "Teacher, why are you also contaminated with your uncle's bad habits?" Can't you talk well? Why are you teasing Li Bing Bofu? ”

Zhu Xiang smiled and asked, "That Zheng'er said, how can we talk well?" ”

Ying Xiaozheng continued to sigh: "Uncle Li Bing is the county guard of Shu County, and these things are his job. If you interfere too much, it will not be good. And if you are too involved, the construction of the equal water dike will probably be said to be your credit. Although Uncle Li Bing doesn't mind, none of you want to rob your uncle's reputation. ”

"If we speak well, he will be able to contradict us with reason. How much time are we wasting time by passing the buck and shirking like this? Zhu Xiang touched Ying Xiaozheng's head and said, "But if we leave him angry, he won't come." ”

Li Mu rubbed his eyes that burst into tears and said, "That's true." ”

Ying Xiaozheng shrugged his shoulders and spread his hands.

Although this is true, he always thinks that his uncle and teacher are deliberately bullying people. With what he knew about his uncle and teacher, his conjecture was absolutely correct.

Of course, my uncle and teacher would never admit it.

Li Bing really didn't continue to ask Zhu Xiang and Li Mu for help. Zhu Xiang returned to the field, and Li Mu did not go to the border of Chu immediately, but accompanied Ying Xiaozheng for a period of time and continued to teach Ying Xiaozheng to ride a horse.

After Zhu Xiang's poisoning, Ying Xiaozheng reluctantly accepted that he was six years old, not seven or eight years old.

Anyway, as long as you have enough power, you can be crowned at the age of fifteen or sixteen in advance.

In this life, my father's physical and mental state is good, and I am afraid that he can only become the king of Qin at the age of thirty. Even if my father is not angry, he will be my uncle's assistant in the future.

I will help my uncle deal with chores now, and in the future, my uncle will assist the government, so don't you do the work of the assistant government yourself?

I am an assistant to myself, and what makes the difference between when I am in power.

So it's good that my uncle is happy.

Six-year-old Ying Xiaozheng finally has the appearance of a handsome child, and is no longer a round ball.

His hands and feet began to grow and he slowly entered his first phase of growth, and he was able to grip the back of a horse when riding a foal.

Zhu Xiang, Li Mu, and Li Bing searched together for a long time, and found a foal with a thousand-mile horse blood for Ying Xiaozheng as a sixth birthday gift.

When he learned that Zhu Xiang was going to give Ying Xiaozheng a birthday gift and cook a birthday dinner for Ying Xiaozheng, Li Bing was very uncomfortable.

Birthdays are not celebrated in this era.

According to the ancient Chinese tradition, birthdays are the Good Friday of mothers, so not only should they not congratulate, but they should also be sad.

Although there will definitely be people secretly celebrating birthdays in private, at the level of society as a whole, birthdays should not be celebrated on a large scale.

It was not until Buddhism prevailed that "Buddha's Birthday" entered the people's sight as a religious festival, and "birthday celebration" gradually became popular.

In the period of Tang Taizong, Tang Taizong sighed and angered the impurity of the folk customs because the people began to celebrate birthdays, and tried to order correction.

However, during the period of Tang Xuanzong, Tang Xuanzong thought that his achievements were big enough and should be celebrated, and became the first person among the emperors to publicly celebrate his birthday, called "Qianqiu Festival", and later renamed "Tianchang Festival". Since then, the emperor's birthday has become a national holiday, which has been continued by later emperors.

It has also become a public tradition for people to celebrate birthdays.

So in the pre-Qin period, it was an incredible thing to celebrate a child's birthday.

But Zhu Xiang said: "I am grateful to God for letting Zheng'er appear in this world. I think that mothers who love their children will definitely think that the day their children are born is a happy day. If she doesn't think so, she doesn't celebrate her child's birthday. Children can't celebrate their birthdays on their own. ”

Li Bing was persuaded by Zhu Xiang's "crooked reasoning".

Ying Xiaozheng actually doesn't care whether to celebrate his birthday or not. When his uncle helped him celebrate his birthday, he hadn't thought about it yet.

Because Zhu Xiang is a commoner, his parents don't pay attention to it, and he doesn't know his specific birthday. And the snow was picked up, and even the age was estimated. Zhu Xiang and Xue are not birthdays.

But both of them had to celebrate Ying Xiaozheng's birthday, and Ying Xiaozheng could only reluctantly accept it.

He thought that when he grew up in the future, he would designate a day as the birthday of his uncle and aunt by order of the emperor, and he would also celebrate the birthday of his uncle and aunt.

He was the emperor, and he said that his uncle and aunt's birthday was the same day.