The letter was written by Xie Xinghua, deputy of the Fusi of Beizhen, and when the northern expedition to the Rakshasa Kingdom triumphed, at the invitation of the Chahar Khanate, Xie Xinghua took a dozen hundred households and a general banner of the Shenji Battalion to train the firearms troops formed by the Chahar Khanate.

It also had the task of figuring out the internal situation of the Chahar Khanate, including the neighboring Rakshasa state.

Liu Hongjian didn't believe that the hairy bear would admit it so easily, which was not in line with the characteristics of a fighting nation.

In the letter, Xie Xinghua made no secret of his contempt for the musketeers of the Chahar Khanate, and bluntly said that the barbarians were like old ladies carrying a burning stick, and they seemed to be more suitable for carrying knives and cutting people.

The muskets that Liu Hong gradually sold to the Chahar Khanate were all fired pistols of the generation eliminated by the Daming firearms army, and this thing was also used against the nomads who were also cavalry.

Now the remaining Tunguska people have been dragged by him to Hada Mountain to dig silver mines, and further west is the Rakshasa country bordering the Chahar Khanate, although Maozi's musket is not as far as the second generation of the Ming Dynasty's front-loading rifled rifle pistol, but it is far more advanced than the first generation of sui firing pistol.

If the Chahar Khanate wants to deal with Maozi with these half-used sittings, it is nothing more than a fool's dream.

But after reading the letter written by Xinghua, he realized that Polochi didn't want to use this gun against the Rakshasa people at all, but for Liwei.

The Chahar Khanate was still made up of numerous Mongol tribes that had been autonomous for decades, and it would take strength to make them obedient, and it was only fitting that the guns were fired against sword-wielding cavalry.

A few rounds of muskets, and then hedging with the iron cavalry of the headquarters, can almost already occupy a great advantage, plus the small number of grenades that Liu Hongjian privately provided to Polochi, it can be said that they are all Chahar's killer weapons.

With a good conscience, the Chahar Khan couldn't say anything good about these dozen instructors of the Ming Dynasty.

After all, there is a request for people, Chahar Khan Abnei and Empress Dowager Sutai not only personally met with Xinghua, but each of them was named a Menggu official, not to mention, he took two copies of Daming and Chahar Khanate, and each of them rewarded a Menggu girl.

Seeing this, the corners of Liu Hong's mouth gradually rose, and he could almost think of how embarrassed Xie Xinghua should be, this man with a full face and beard, although he was the deputy of Jinyi Wei, he was sloppy and disliked by his colleagues.

I didn't expect to be treated so well when I arrived in Menggu, and I heard that the ancient people of Menggu didn't take a bath once a month, which can be regarded as smelling similar.

The letter stated that after the signing of the Treaty of Erkou, Tsar Alexei Mikhailovich of the Rakshasa kingdom was furious, the commander of the Far East, Morozov, was removed from his post and imprisoned, and Norton was dismissed from the post of marshal.

The Rakshasa country was in an uproar, and the call to send troops to conquer the Ming Kingdom and regain the lost territory was crazy high, but Alexei was suppressed.

Liu Hongjian didn't believe that this young tsar was afraid of the Ming Dynasty, which was not in line with the temperament of the fighting nation, and this guy must be waiting for the opportunity.

This Alexei is not simple, Liu Hong gradually said in his heart.

Seeing the middle of the letter, Liu Hong's brows gradually furrowed.

"What's wrong with the master, but the border is tight again?" Sun Xiuxiu sat aside with her son in her arms, and when she saw Liu Hong's eyebrows tightly locked, she asked as if she was worried.

This afternoon, Jin Yiwei sent a letter from the border gate, she knew about it, and her husband was finally able to accompany them at home, as a wife, she didn't want the border pass to have another incident.

"It's nothing, it's okay to close the border!" Liu Hong said casually.

"The food is going to be cold, you guys don't have to wait for me to eat first." Seeing that the three wives were sitting at the table with their children in their arms and had not moved their chopsticks, Liu Hong gradually urged.

The Rakshasa Kingdom has even developed a grenade!

This was too shocking for Liu Hongchuan, Xie Xinghua made it clear in the letter that the Jinyi Wei in the Rakshasa Kingdom saw it with his own eyes, and risked his life to send the news to Xie Xinghua.

It's just that the power doesn't seem to be as great as Daming's grenade, and this Liu Hong gradually understands in his heart, after all, Daming's black powder formula is the best ratio summed up after thousands of experiments in later generations.

Without precise values, the power is not optimal.

Sitting at the table and thinking for a while, Liu Hong gradually felt relieved, after all, the structure of a grenade is not complicated, it is nothing more than a container, a piece of gunpowder and a fuse.

With a little study by experts familiar with firearms, the problem of fuses is not difficult to solve.

The Rakshasa country has mastered the method of making grenades, which is definitely bad news for the Ming Dynasty, the Rakshasa country is adjacent to the countries of Europa to the west, maybe it won't be long before the entire country of Europa can learn it.

Alas, it seems that we have to find a way to develop more advanced firearms to deal with it, and nations such as the Rakshasa Woolly Bear must be subdued and scared, so that it knows that even if there are many of them who can't do it, maybe they will be really smart.

But...... What should I do to research?

The rifled gun was already the most advanced musket of its time, but it was always limited by the speed at which the projectile could be loaded.

Although the drawings of the reloading gun have been provided to the Ordnance Institute, the difficulty of implementation is still a bit large compared to this era, which is almost the same as the difficulty encountered in the rearloading gun and grenade.

Rear guns require the bottom of the gun to withstand a huge impact force, and the bullet must also be changed to a firing pin type, and the excitation device is also very different.

Whether it is the material of the gun, the material of the bullet and the firing pin, it must have a strong industrial level as the foundation.

Steel is no better than iron and copper, just rifling is useless, not to mention more precise metal shell primer bullets.

There is also the selection of the primer of the bullet, and the musket projectiles of the Ming Dynasty are all paper cartridge shells, and the projectiles are made of lead.

One of the advantages of lead bullet is that it is slightly larger than the barrel of a gun when it is made, and the lead is soft, and the soft lead projectile is flattened by striking it through the strip, so that it fits snugly against the wall of the chamber.

Although this increases the reload speed, it has an Achilles' heel, that is, the projectile is flattened by the ball, and the shooting accuracy is greatly affected.

If it is replaced with an aftergarment, there will be more problems, which need to be pondered by the craftsmen of the armory.

Alas, let's take the time to go to the armory station to have a look, maybe I can help you, Liu Hong gradually said in his heart.

"Daddy, eat—" As he was thinking about it, he shouted at him with a smile on his face.

"Well, here it is." Liu Hong gradually responded.

Putting down the things in his heart, Liu Hong gradually paced and sat down at the table, and Kun Xing got up and handed him a bowl of rice.

"Husband, tomorrow the queen will summon the concubine into the palace." Sun Xiuxiu wiped the rice grains from the corners of her son's mouth and said warmly.

After Zhu Cihong ascended the throne, the crown princess Chen Kexin was promoted to queen, and the side concubine Qin Qiaozhen was named a concubine.

"Oh? What is it? Liu Hong gradually sandwiched a chopstick dish and said while eating.

Because he was still during the national funeral, the table was full of vegetarian dishes, and there was no meat, but Liu Hong gradually ate extremely sweet.

"The concubine doesn't know, the queen is about to give birth, maybe she is uneasy, and she wants to hear about some postpartum matters." Sun Xiuxiu whispered.