"This Liu Zeqing, so bold, dared to come back." Inside the governor's yamen, Zhu Dadian was blowing his beard and glaring, slapping the table angrily.

Two days ago, Liu Zeqing actually returned to Shandong with soldiers and horses.

Six years of thieves into Henan, Liu Zeqing was moved to Zhangde (Anyang), Henan Province in September of the sixth year, first did not go to the sick side, but the above urged tightly, seven years at the beginning of the year to see that the thieves had returned to Shaanxi, this led the soldiers and horses to Zhangde.

As a result, within a few months, he left the town without permission with his soldiers and horses and drove all the way back to Heze, Shandong. Liu Zeqing can be said to be the most slippery warlord in the late Ming Dynasty, and he has always been in line with the attitude of 'the dragon does not leave the abyss', why can't the Ming court move him, and what he is best at fighting is naturally soy sauce.

Zhu Dadian has never had a good impression of Liu Zeqing, mainly because when Zhu Dadian commanded the soldiers and horses to suppress Kong Youde in the sixth year, Liu Qingze guarded the water gate, but Liu Qingze was too frightened to approach when he encountered Kong Youde's thieves, and he was not familiar with firearms, which caused Kong Youde to enter and exit the water gate as if he was entering and leaving his home, and finally let Kong Youde escape to the sea.

However, this Liu Zeqing has more than 3,000 soldiers and horses in his hands, and Zhu Dadian can only cry out in vain, and he can't move!

In a bad mood, Zhu Dadian asked the following: "Then what actions does Zhao Yan have in Huang County?" ”

"Tell your lordship, it's very peaceful."

"Have the soldiers and horses of the Wenden battalion been put back?" Zhu Dadian then asked, Wu Anbang's waste materials allowed Zhao Yan to capture nearly 2,000 people.

"It has been released to Ninghaizhou."

……

Zhao Yan was indeed relatively peaceful in Huangxian County, and there was no military transfer. The nearly 2,000 captives were released after the road was built.

After all, they are also officials and soldiers, and Zhao Yan has no right to detain them anymore. The section from Huangxian to Zhaojiapu has allowed these free laborers to be repaired smoothly and widely, and the traffic problem is a preliminary solution.

Those Shandong businessmen are obviously very interested in making nitrate from the soil, after all, no one will refuse what they have to make money, and they all brought a technician back.

After more than a month of training, these technicians have mastered the technology from nitrate collection to purification, preservation, and transportation.

I believe that in the near future, this kind of local nitrate making workshops will be all over Shandong, and the urine will be sold for money at that time, which is really to generate income for the people!

Zhao Yan has been teaching those craftsmen in the Ordnance Bureau these days, and Zhao Yan has selected a batch of craftsmen from among them to experiment with new types of cannons.

At present, the technology of iron molded cannons has been overcome, and the craftsmen of the Ordnance Bureau have mastered this method, and the speed of cannon construction is naturally much faster than before.

Before the advent of iron molded cannons, people relied on clay molds to build artillery, which could only be used once, and then they would be scrapped, and there would be a lot of honeycombs in the barrel, and if the process was not strict, it was very easy to blow up.

In addition, it is not easy to make a clay mold, it takes a month or two to make a clay mold, and it may take a few to get a usable one, and if it encounters rainy weather, it will take longer.

The technology of iron mold casting cannons appeared in the late Qing Dynasty, when Westerners had already used boring machines to build artillery.

With the technology of iron mold casting cannons, the production of artillery is undoubtedly much more convenient. However, the standard artillery has not been determined, and a lot of experiments are still needed.

Zhao Yan invented the safety fuse, and then told these craftsmen about the knowledge of artillery, and the most important thing is to learn the unit of measurement, at least to be able to understand Arabic numerals, understand the concepts of meters, decimeters, centimeters, and millimeters.

Some of the craftsmen in the artillery laboratory have just been selected from various guard houses in Shandong, and these craftsmen know the relevant techniques of cannon casting.

With a safety fuse, these craftsmen can experiment with different magnifications one by one, then record the data, and then select the one that can be tried the most from this data.

This time, Zhu Dadian asked him to choose craftsmen, and most of the ones he chose were shipwrights. Most of these shipwrights were recruited to Shandong to build warships when Yuan Keli was the governor of Denglai.

After the Kong Youde Rebellion, many of these shipwrights disappeared, but hundreds of them could still be found. These hundreds of shipwrights are currently settled in Longkou Port.

Longkou Port is located in Huang County and is a good port. Although Shandong has imposed a ban on the sea, small-scale maritime smuggling still exists, but the amount is not as large as that of the southeast coast, and the Shandong officials have mostly turned a blind eye. Mao Wenlong once detained the merchant ships that went to trade with him, and later Yuan Chonghuan beheaded Mao Wenlong privately and returned the ship.

After these craftsmen came to the Ordnance Bureau, although they could not bring any advanced artillery, they improved some technical details.

Among them, there is also a craftsman named Lu Lu'an, who is good at creating a swarm of bees. A swarm of bees is a primitive version of rocket artillery, and when the Ming army faced the enemy, it often fired tens of thousands of rockets at a time.

However, the lethality of this swarm of firearms is very low, and it can even be said that it is not easy to kill people.

Lu Lu'an's mention of this kind of swarm reminded Zhao Yan of a good weapon-Gris rocket. This kind of rocket is like the kind of cupola that later generations played during the Chinese New Year.

A small rocket, tied to a stick, takes a little fire, and then flies out with a 'boom'. The GrisRocket is an enlarged version of the Cupola, with shrapnel mounted on the head and dealing area damage when exploding.

The manufacturing technology of this rocket is not difficult, the launch is also very simple, and the power is even better, especially in incineration, which was still used by the British during the Opium War.

The disadvantage is that the landing point is relatively large, and it is generally used for intensive bombing, with a range of about 1000~3000, and if the rocket is equipped with the army, it will inevitably increase the amount of gunpowder.

There are also grenades to be developed, the technology of grenades is very simple, but there will be some requirements for ignition fuses. Grenaders have appeared in the West, but when Zhao Yan studied the history of war, he found that these grenadiers generally did not exert much effect.

After all, the ignition method is a bit troublesome, and it is impossible to blow it up as soon as it is pulled and thrown like in later generations. This primitive grenade is a relatively weak weapon in the field.

Zhao Yan suddenly had the idea of equipping the troops with Gris's rockets, plus grenades, longbowmen, and artillery.

The musketeers fired first and then retreated to the rear, some in close combat with knives and some throwing grenades in one or two rows behind. Part of the musketeers retreated to the rear to put rockets in support, the longbowmen in the back fire, and the artillery used howitzers to fire in the rear......

There are four types of fire support: grenades, longbows, rockets, and artillery, with the grenadiers at the front, the longbowmen at the back of the horizontal line, and the artillery and rocket troops at the rear, forming a layered fire support. The grenade exploded closer, and the longbowmen extended a little back. The artillery was extended a little more, coupled with intensive bombardment by rocket artillery......

With such a dense firepower network, then the five rows of deep horizontal teams can completely block the impact of the cavalry, and the cavalry of the Manchu Qing Dynasty, no matter how well they are equipped, are just flesh and blood, and the words of 'Manchu people are less than 10,000, and 10,000 are invincible' are just blown out to bluff people, and with the addition of the brutal massacre, it really makes people talk about it.

For such an army, the logistical supply requirements are relatively high. After a battle, it is estimated that a lot of arms will be consumed.

The most important thing is silver, and it is obviously not a good thing to rely on glass mirrors alone.

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The third watch, call for tickets!

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