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Before I knew it, it was June of the tenth year of Zhenguan.

This year's June was so hot that the sun shone on the ground, burning the slate on the ground. Under the shade of the trees in the street, several old dogs lay on their stomachs, stuck out their tongues, and breathed so loudly that even when others passed by them, they would not raise their heads to look at the upper half of the time.

It was in such weather that Zhang Yunwen stood in the sweltering factory and watched the craftsmen put the finishing touches on the cast barrels.

"How many batches is this?" Zhang Yunwen asked softly.

When Master Lu who was standing beside him heard this, he immediately replied respectfully: "This is the fifth batch!" In the past few years, we waited for two years to build a batch of ten doors in each batch. In the past few years, the year has been better, almost a batch of batches are made every year. Today, there are thirty in the storehouse, ten of the other thirty are allocated to the academy for teaching, and the other twenty are in the artillery barracks. Oh, by the way, that's an order signed by you yourself! ”

Zhang Yunwen nodded, but his eyes fell on the craftsmen who were adding wire grooves to the gun breech. The craftsmen are using a special tool to cut a spiral groove in the newly formed barrel. This is not an easy task, and while the chamber is still very hot, a special tool is used to draw two rotating wire grooves inside the chamber. Often, craftsmen wrap their hands in thick linen cloth and process them. Despite this, there are still cases of burns from time to time. Moreover, it can only process two line slots, and the artillery is gradually cooling down, and it is not easy to carve line slots again.

Although conical shells were fired with smoothbore guns, the accuracy of this kind of shelling was extremely inaccurate, and often the shells fell far from the target, at least ten zhang. This made the craftsmen and the artillerymen of the academy discouraged, and when Zhang Yunwen was asked later, he patted his head and said with a wry smile that he patronized to reduce the friction of the gun chamber and prolong the life, but he forgot that the smoothbore cannon could not be this kind of tailless conical shell, otherwise the shell would be extremely unstable when flying in the air, and it would be very easy to somersault, and it was even more common to miss.

As a result, several craftsmen and the academy have been injured, but fortunately no one has died. Later, Zhang Yunwen asked the craftsman to carve a spiral rifle in the barrel. However, at this time, there was no large machinery such as lathes to use, and Zhang Yunwen had no choice, so he had to let the craftsmen figure it out by themselves. Eventually, after continuous exploration, the craftsmen still found a way.

And those craftsmen who came up with a way finally got ten copper coins rewarded by Zhang Yunwen.

Seeing that the second batch of cadets of the Military Academy was about to graduate again, Zhang Yunwen planned to expand this artillery unit. And this expansion is mainly centered on this Tianwei General who is being manufactured.

Standing in this processing workshop for three quarters of an hour, Zhang Yunwen was already sweating. Look at the craftsmen again, the dark skin is like being soaked in water, and the beads of sweat are dripping down. Later, Zhang Yunwen couldn't stand it anymore, so he went out of the processing room with Master Lu.

"Heh, stay in this processing room for a while, and you don't even feel hot in the scorching sunlight outside!" Zhang Yunwen said with a smile, "By the way, Lao Lu, it's so hot in this processing room, you go and arrange people to burn a few large barrels of herbal tea every day, and put them in the processing room, so that the craftsmen can also drink to quench their thirst!" ”

When Master Lu heard this, he immediately showed gratitude, and said with a fist: "Thank you for your kindness!" ”

When I came to the test site where the artillery was tested, I saw three groups of trainees surrounding three guns conducting this test.

I saw three guns loaded and fired at the same time. Three shells whistled out, making three large holes more than 800 paces ahead.

Just after the shell was fired, three trainees who were closest to the location of the explosion and were in charge of the survey immediately rode up, measured the distance, and waved the red flag in their hands to this side.

The student next to him was looking at the red flag fluttering, and immediately reported the data: "Eight hundred and sixty-four steps, eight hundred and eighty-three steps, nine hundred and five steps!" ”

Another student immediately wrote down the numbers in a notebook.

Then, one after another, the bombardment of the escapes was like rain, blowing up the area of 1,000 steps of the 800 trails to pieces, and the whole area seemed to be ploughed aside, and wisps of gunpowder smoke were still scattered from the deep pits and the turned over crusts.

Finally, I heard a student scream: "Wow, it's so hot!" "But the cannon body is so hot that you can't get your hands down.

The student next to him immediately laughed and said, "Work hard, this cannon is about to crack!" ”

This is a test of the number of consecutive shots that the barrel can withstand.

Zhang Yunwen watched the skillful movements of these students with great interest, it seemed that they were already very familiar with this kind of cannon.

When a cannonball was fired, I saw a crack suddenly appear on the barrel. The chamber of the cannon exploded.

"Two hundred and five shells! Two hundred and five shells were fired in a row! The students suddenly muttered: "This is much better than the last cannon, the last one only fired one hundred and eighty-two shells and then cracked!" ”

"Stupid, this shows that our craftsmen are more skilled in making this cannon! There are fewer mistakes, too! Didn't you hear Mr. say in class that when casting a cannon, the molten iron is mixed with air, producing bubbles, which makes the cannon body form holes, the density is uneven, and the service life will be greatly shortened! ”

"Oh, I see!"

Seeing these students pointing at the country, Zhang Yunwen suddenly felt a sense of being honest and old.

After inspecting the situation of the equipment institute and the trainees, Zhang Yunwen's long-planned expansion plan has already been seen.

When he returned home, Zhang Yunwen spent a day writing a letter, mainly discussing the expansion of the reconnaissance battalion and artillery.

In the recital, he first recounted the situation encountered by the reconnaissance battalion during the Tuyuhun campaign, and then wrote: "In the long run, if the reconnaissance battalion dies. then there is no successor. Therefore, the ministers asked the whole army every three years, all the folds and the palace, and the soldiers of the soldiers, so as to fill the reconnaissance battalion and make up for their war losses. It can also be used to garrison the imperial city! ”

When introducing the artillery, it was written: "Today, General Wei Da has taken shape, and his power is huge, straight as thunder, wind and fire roaring, and it is even more victorious in the long run." Siege the city and pull out the village, cut down the grass, such as pushing the sand city and cutting the grass and trees, it can be done. "Finally, the benefits of an artillery as a strategic deterrent are introduced.

After writing it, I read it twice again, and then I put away the music and prepared to present it to Li Shimin when I went to court tomorrow.

Just after he inadvertently told Li Yu about it before going to bed, Li Yu grabbed Zhang Yunwen's hand and said, "Xianggong, don't tell this matter in the main hall tomorrow!" ”

Zhang Yunwen suddenly asked suspiciously: "Why is this?" ”

Li Yu's face was calm, and his eyes flashed with wisdom: "If Xianggong tells this matter, it will definitely arouse suspicion, saying that Xianggong wants to expand your power." Although my father will not doubt it, it is inevitable that he will not be affected by the ministers below, and he will not care about this matter! ”

Zhang Yunwen pondered for a moment, suddenly felt very reasonable, and immediately asked: "Then when do you tell me when will my husband present this piece?" ”

"Well, just after the Scattered Dynasty! At that time, you presented it to your father alone, and if your father was silent after reading it, it means that he had doubts about the content of the recital. If he takes a look at Xianggong after reading it, it means that his father has doubts about Xianggong. If it is the latter, the concubine suggests that the prime minister take the initiative to make a statement to His Majesty and give up a department in charge. In this case, the concert of the Xianggong will surely pass! As for whether the father will allow the prince to step down, this concubine can't guess! Li Yu said while tilting his head to think.

After Zhang Yunwen heard this, he was suddenly shocked, he couldn't imagine that this Li Yu usually looks quiet and quiet, with a cute face, but there is a big gully in his heart! chuckled at the moment: "Hehe, I didn't expect that my family Yu'er is still a female Zhuge ah!" Why didn't you see it before as a husband! ”

Li Yu smiled shyly: "I didn't tell people before!" ”

Zhang Yunwen thinks about it, it is true.

At this time, Li Yuyou said: "By the way, Xianggong, you just said that the female Zhuge is this, who is this Zhuge and is it very famous?" ”

Zhang Yunwen: "......"

On the second day, Zhang Yunwen followed what Li Yu said, and kept the chapter in his arms, until after the dispersal of the dynasty, he followed Li Shimin to the side hall.

"Hehe, I am above the court meeting, and when I see you looking around there, I know that something is wrong with your kid! As expected, this scattered dynasty is coming! As soon as he saw Zhang Yunwen coming, Li Shimin laughed and said.

Zhang Yunwen laughed twice and took out the chapter from his arms: "Weichen is indeed in trouble!" As he spoke, he handed it over.

Li Shimin took the chapter with a smile, turned to the first page, looked at the handwriting, and suddenly smiled: "Yunwen, you have to practice this character well!" ”

Zhang Yunwen suddenly smiled embarrassedly: "Well, the word Weichen has already taken shape, and no matter how much you practice, you won't be able to practice anything famous!" Besides, Weichen still has official business to do every day, so he doesn't have much time to practice calligraphy! ”

Li Shimin also smiled: "Forget it, although I like people who write beautifully, I prefer people who do practical things!" ”

Laughing with Zhang Yunwen, Li Shimin slowly flipped the chapter, and the words gradually decreased. In the end, there was only silence in the entire side hall.

After Li Shimin finished reading this recital, he closed his eyes slightly and was silent. After a while, Li Shimin said: "The matter is very high, and I have to discuss it with you before I can make a decision!" ”

When Zhang Yunwen heard this, he immediately said in a little anxious: "But Your Majesty, these two things are beneficial to Datang!" ”

Li Shimin nodded: "I know!" Now, although the Tang Dynasty has died, Tuyuhun has been destroyed, and the four Yi have surrendered. But I also know that although the world is peaceful, it is dangerous to fight. Moreover, there is Goryeo in the east that has not yet been uprooted, and the land of Liaodong has not been recovered, and Tubo in the west has risen strongly, and it has bordered my Tang Dynasty. Under such circumstances, I also want to expand my armaments and destroy these countries that may threaten our Tang Dynasty in one fell swoop. However, the stakes are very high, and this reconnaissance battalion is close to the Imperial City, and the artillery battalion is also stationed in the north of the Imperial City. Moreover, recently, some people in the DPRK and China have even asked for the government to cut off the soldiers. On the cusp of this, I don't want you to be attacked by these people! ”

Hearing what Li Shimin said, Zhang Yunwen's heart was slightly moved, but he expressed his dissatisfaction with those officials who asked for the reduction of government soldiers.

"Don't worry, I will discuss this matter with the eldest grandson and Xuan Ling, and when the time comes, you can find a few more martial artists to strengthen their momentum and overpower those civil officials, and this matter will be done!" Seeing that Zhang Yunwen's face was not worried, Li Shimin said with a smile.

"But Your Majesty, since you support the two expansions, you can just pass it directly!"

Li Shimin said with a smile: "Those who are kings must be upright and impartial." There's more to it than you know! ”

When Zhang Yunwen heard this, he was silent.

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