[Today's first update!] 】

In the Taiji Hall, Li Shimin sighed at the speed of the formulation of Liu Minghua and others' plans, and then looked at it carefully.

However, after reading it, Li Shimin's face became solemn and he didn't speak for a long time.

When Ma Zhou saw Li Shimin's expression, he was a little apprehensive in his heart, he hesitated and asked in a low voice, "Your Majesty, is this plan feasible?" ”

Li Shimin shook his head and said: "Dredge the main canal, pave all the main canals with stones, and carry out long-distance water transfer?" This...... It is feasible, but according to the amount of work in this plan, it may not be until next year when these water conservancy facilities are built, right? But this far water can't quench the thirst of the near! Now that the drought in the north is getting worse, if these water conservancy facilities are not effective in a short period of time, it will ......"

Ma Zhou breathed a sigh of relief, and then complimented: "Your Majesty's eyes are like torches!" After Weichen read this plan for the first time, he thought about it for a long time and asked Liu Minghua this question. It's just that Liu Minghua said that these are not problems, and he is very sure that he can speed up the construction of water conservancy projects, so that those places with severe drought can be connected to water within a month! ”

Li Shimin was dumbfounded and said, "What? Water in a month? How is this possible? At present, the main canals everywhere are all dirt, and even if some water is diverted through the drought time, most of the water will be absorbed by these earthen ditches before it reaches the arid land. Everyone knows this, but there is no solution to it.

Liu Minghua naturally knows the disadvantages of soil ditches, so he said that all these main ditches should be paved with stones! That's what you mean, don't you? ”

Ma Zhou nodded and said, "Yes, we currently have some rivers that can divert water. But this water, like blood, has not yet reached the arid regions that need to be saved. It was sucked dry by those dirt canals. Minghua called those dirt trunk canals 'vampires'!

In order to solve this 'vampire', Minghua said that laying stones is the best solution! ”

Li Shimin sighed: "Who doesn't know this? Cui Yuantai of the capital water supervisor. Several times the table said that the main canal should be repaired, and it was also built to lay stones. But how many stones does it take to lay all the stones for such a long trunk canal?

The north is mountainous, and there is naturally no shortage of stones. But in a month, it is necessary to lay all the stones of such a long main canal, which is ...... No amount of quarrying is enough! ”

It's not that Li Shimin doesn't understand architecture. In those days, most buildings were civil structures.

A large part of the "soil" of this civil structure is stone.

Some water conservancy facilities in the palace. It is paved with stones, so that the water is relatively clear and there is no silt under the water.

In the past, Li Shimin went up the mountain to inspect the quarrying situation, and knew that those quarryers were really hard! Use an iron drill and a sledgehammer to cut out the stone in one go! Sometimes, one person can't mine a few stones in a day!

Therefore, when Li Shimin saw Liu Minghua's plan, he immediately pointed out that the biggest shortcoming of this water conservancy plan is the stone! If we can't mine so many stones, there will be no way to solve this year's drought.

Ma Zhou hesitated, a little uncertain, and said, "Your Majesty." Liu Minghua seems to have told me what kind of medicine he would use to bombard the boulders on the mountain? At that time, the boulders on the mountain will be torn apart, and there will be no need to mine them manually! At that time, everyone just went up the mountain to carry the stones! ”

"What? How is this possible? Do you know how strong are the boulders on the mountain? What medicine...... Can these boulders be torn apart? ”

Ma Zhou shook his head and said, "This ...... I don't know exactly how Weichen is. Liu Minghua said. What kind of medicine must be kept secret and must be in the hands of the royal family. That's right. Liu Minghua seems to have told Princess Li Lan'er about this, could it be that Princess Li Laner didn't tell Her Majesty? ”

Li Shimin snorted: "These days. Those two crazy girls always go out to find Liu Minghua, the princess. What is this system? I'll let the eldest grandson empress discipline them! It seems that I'm going to go to Lan'er and ask, what kind of medicine did Liu Minghua say, what is it? Can you blow up the rocks on the mountain? It's unimaginable! ”

Li Shimin paused, nodded again, and said, "Ma Zhou, you should step aside!" In the past few days, you and Liu Minghua have been focusing on water conservancy construction, environmental protection, greening and cleaning streets, making wine, and inspecting the entire Chang'an City...... It's up to you to prioritize things! ”

Ma Zhou immediately said: "Okay, that Weichen will retire!" ”

Seeing Ma Zhou leave, Li Shimin frowned and walked towards the place where Empress Changsun lived.

When he arrived outside the door, Li Shimin heard Le'er coquettish there: "Queen Mother, we haven't been out of the palace for a day, and I'm suffocated here!" Shall we go out and have some fun? Don't worry, this time we won't go out to find Brother Minghua, just go out to play, I swear! ”

Empress Eldest Sun said angrily: "Children swear at every turn? The Queen Mother doesn't know what's going on in your mind? When you leave the palace, how can you not go to Liu Minghua? Hey, after all, the two of you are princesses, what kind of system do you run to Liu Minghua every day?

Besides, your father didn't say that he wouldn't let you associate with Liu Minghua, but Liu Minghua has had too many things in the past few days? If you two princesses go to him, wouldn't Liu Minghua want to put down everything to play with you? Le'er, do you think that's appropriate? ”

Le'er opened her mouth and stammered for a while, then lowered her head, and said reluctantly: "It seems, it's not appropriate, right?" Okay, then we won't go out, anyway, after a while, Brother Minghua will also come to the palace to study with us! ”

Li Shimin walked in and said with a smile: "My little Le'er, this is sensible!" Your queen mother is right - Liu Minghua can't finish those things with three heads and six arms in the past few days. Well, let's not talk about that. Lan'er, Liu Minghua asked you to tell me, what kind of medicine does he want to make? Can you blow up a boulder on a mountain? Hurry up and talk to your father! ”

Lan'er hurriedly stepped forward, handed an envelope to Li Shimin, and then said to Li Shimin: "Father, Liu Minghua just told me that he would make a very powerful gunpowder, this gunpowder is too lethal, and the formula must be in the hands of the royal family!" Moreover, Liu Minghua told his father: At present, this gunpowder can only be used in construction, and the military is still suspended, otherwise it will violate the peace of heaven and will be punished by heaven. Inside the envelope is the gunpowder formula, please take a look at it! ”

"So it's gunpowder? This thing already existed in the Sui Dynasty! However, this thing can be used to make fireworks or juggle, how can it be used to blow up boulders? Li Shimin was very puzzled.

In the Sui Dynasty, the three-element system of saltpeter, sulfur and charcoal was born. These are all things that alchemists can't get, of course Li Shimin knows.

Lan'er shook her head and said, "I don't know about this, Liu Minghua said that he would have a special formula, right?" Liu Minghua didn't tell me these formulas. He said I knew there was no benefit to these recipes, and maybe they would kill you! So, I didn't dare ask. ”

"Murder?" Li Shimin's brows jumped, and his face became extremely solemn.

Such a small gunpowder formula can actually make a princess-level person kill himself? Can you see how powerful this gunpowder recipe will be?

Li Shimin hesitated, but slowly opened the envelope.

Empress Eldest Sun immediately pulled Lan'er and Le'er to avoid it. Since Liu Minghua regarded this gunpowder formula as a top secret, the eldest grandson queen naturally knew to avoid suspicion.

After Li Shimin finished reading the gunpowder formula, his expression was a little puzzled. Because the materials listed in this recipe are the most basic saltpeter, sulfur, and charcoal, which is similar to the current fireworks gunpowder?

However, there are some special materials that Li Shimin can't understand. Moreover, the proportion of this configuration is also different. Li Shimin is a little strange -- the same thing, but in different proportions, plus some special materials, the gunpowder that comes out in this way will turn the gunpowder that sets off fireworks into fierce gunpowder that can blow up rocks?

Inside the envelope, Liu Minghua repeatedly emphasized that this recipe must be kept secret! Even the person in charge of making gunpowder will burn it after reading this recipe! This recipe is finally written down in the brain and cannot be saved in the form of words. Otherwise, once this formula spreads to the enemy, then Datang may even have the disaster of destroying the country!

"The catastrophe of national annihilation?" Li Shimin repeated this sentence, his face becoming more and more solemn.

How amazing Liu Minghua is, Li Shimin has seen it. The gunpowder that can make Liu Minghua treat it so carefully must be extraordinary, it must be amazingly powerful and amazingly lethal!

Who are you looking for to make this gunpowder? What about the use of this gunpowder? After thinking for a while, Li Shimin said loudly: "Come on, quickly summon the two generals Cheng Zhijie and Niu Jinda into the palace!" ”

According to Liu Minghua's water conservancy plan, this gunpowder must be manufactured as soon as possible, and then it can be mined on a large scale! Therefore, Li Shimin did not hesitate.

He was going to put Niu Jinda in charge of the gunpowder formulation and the production of gunpowder.

Let Cheng Yanjin be responsible for supervising and using these gunpowders.

Cheng Biting Jin and Niu Jinda are definitely people that Li Shimin can trust!

The most important thing is that Cheng Yanjin and Niu Jinda are very good to Liu Minghua, so there should be no problem with them cooperating!

"Second brother, is this gunpowder really amazing?" At this time, Empress Eldest Sun came over and said softly.

Li Shimin nodded and said, "It should be!" Liu Minghua is not a person who is ashamed of his words, right? ”

Empress Eldest Sun nodded and said, "Not only will he not be ashamed, he is simply too modest!" For example, he saved me, but he told the doctors that he was just a coincidence. ”

Li Shimin was stunned: "Yes! It seems that Liu Minghua also has reservations about the fierceness of this gunpowder? ”

Empress Eldest Sun smiled: "It must be! Minghua: He will definitely leave room for doing things. If he says that this gunpowder is very powerful, it is really gunpowder, and it must be 12% powerful! Majesty, Minghua is the Tang Dynasty, and has repeatedly performed miraculous feats for the royal family, which ......"

"Haha, okay, it's time to reward, I'll make an order!" Thinking that there would be a powerful gunpowder in Datang, Li Shimin's blood boiled! In this case, if Liu Minghua is not rewarded, Li Shimin himself feels that he has become a faint king! (To be continued......)