The workshop is currently focused on civilian use, and the military is not urgent. Just follow the steps. The most important thing is gunpowder.

The four great inventions of China are gunpowder, the compass, papermaking, and movable type printing.

The three major inventions touted on the Internet were simply laughable in the Song Dynasty. The compass was improved by Sinan and already existed in the Sui and Tang Dynasties but was learned by the Arabs; papermaking was improved by Cai Lun; only movable type printing was born in the Northern Song Dynasty, but

It was not widely used. In the Ming and Qing Dynasties, engraving was still the main method. After all, not every worker was literate...

During the Tang Dynasty, gunpowder was born, widely used in warfare, and began to show its impressive features.

Drawing on the explosive power of gunpowder, the Tang Dynasty applied it to crossbows as a booster, which increased the range of the crossbow arrows.

However, the explosiveness and lethality of gunpowder were ignored.

"Daozhang Xu, how is the research? In the past few months, I have sent thousands of kilograms of food to you one after another, and I have told you the formula. Haven't you figured it out yet?"

This time Li Jia came to the Taoist temple in Danzhou again, but he was urging Taoist Xu to conduct research on gunpowder.

"Actually, Lang Jun, you should find those pyrotechnics masters. To me, sulfur and other substances are just materials for making alchemy!" Taoist Xu said calmly.

"This kind of thing is too harmful to nature. Don't use it unless it's critical!"

Following Taoist Xu, who looked like a master, he came to a cold and dry basement. On the wooden boxes, there were balls, some big and some small, about hundreds of them.

The gunpowder was wrapped in sun-dried earth to prevent accidents.

"After lighting the fuse, no grass will grow within a radius of one foot of the small ball; while a river of blood will flow within a radius of three feet of the big ball!"

"What Lang Jun said is too general. If it's just a hair's breadth, it's power will be vastly different. It took Pindao several months to improve it before he came up with a truly suitable ratio!"

Then, Li Jia had a piece of paper in his hand, with these lines written on it:

"Lang Jun, these things are too shocking and harmful to the heaven and earth. Please be careful!" Taoist Xu said with a sincere face.

"So-and-so already knows!" Li Jia said equally cautiously.

Looking at Li Jia's leaving figure, Taoist Xu pondered:

At this point, I don’t know if it’s a blessing or a curse. It depends on God’s will!

He had a look of disgust when he came, but after returning, Li Jia was really excited. With gunpowder in his possession, who else in the world could stop him? Ah?

Wait, now that I have gunpowder, how do I fire it? How do I make a cannon? Should I just get an iron cylinder?

However, Li Jia, who is familiar with history, knows that bronze cannons have always been the mainstream of history, and it will take a long time to be eliminated.

"Let me know, Xiling City has been looking for more copper mines recently. We are currently transporting some copper materials from Yongzhou. I will be of great use!"

When a boat reaches the bridge, it will naturally go straight, and when a car reaches the mountain, there will be a road.

Just think about it first, you need to try more, you will always get it right.

"Before artillery was manufactured, how would these shells be fired? Could they be hung on a crossbow?"

"The bed crossbow is quite suitable!" Li Jia kept thinking in his mind. Forgive him as a liberal arts student, he could only think of this.

"The trebuchet is not bad! It feels more reliable than artillery!" Thinking about the Mongols' invincible return artillery, which is rampant in Europe and Asia, it is obvious that the trebuchet is not outdated at present.

After thinking about it, Li Jia decided to carry out a two-pronged policy, researching both artillery and trebuchets, artillery siege and trebuchets killing, wouldn't it be beautiful to take into account both?

Thinking about it, Li Jia was very excited along the way. This yaya feeling was really good.

"Hey! What are these?" I don't know where I walked. Suddenly, wooden houses with railings appeared in front of Li Jia. The walls seemed to be plastered with mud. Not far away, Li Jia could even see through the crack in the door.

A black figure inside.

"Lang Jun, it seems that they are the Kunlun slaves you once plundered at sea. You didn't make any arrangements, and they ended up here!" Zhang Huzi looked around for a few times before saying.

"There were also a lot of Kunlun slaves on the ships that were robbed at sea a few days ago. Together, they numbered at least two hundred!"

"Kunlun slaves?" After thinking carefully, the Li family realized that these people were the big food merchants they robbed outside the city, and the Kunlun slaves on the ship.

However, they are not the Kunlun slaves or Southeast Asians that were common in the Tang Dynasty, but black people from Africa! Although both are quite dark, they are slightly similar...

"Then what do they rely on for food on weekdays?"

"Before, they all worked by themselves and went hunting in the forest, and their life was quite happy. I heard that a while ago, they caught too many people and it was difficult to tame them. These Kunlun slaves are quite methodical, and they can be tamed strictly.

Really, so they are now in the mine, as the head of the mine, managing the mining of those people!"

"Then which one is here?" Li Jia asked.

"It must be the wife they married! There were several women in that group at that time, and they all looked exactly the same, and we couldn't tell them apart!" Zhang Huzi said in a confused manner.

"What, these people haven't been castrated?" Li Jia was shocked. Didn't he say that Arabs like to castrate black people the most? He blamed himself for being too comfortable, so he just left and left.

"Why do we need to castrate them? Wouldn't they lose their strength to do things this way?" Zhang Huzi asked doubtfully.

"It's okay!" Li Jia shook his head. Castration was indeed inhumane. "It is strictly prohibited to marry these Kunlun slaves!"

"Don't worry, Sir. We are a kingdom in heaven. Who would marry them? This is no longer a big joke. Besides, these Kunlun slaves are extremely well-behaved and obedient, and they don't dare to disobey them! Those who gave birth to children

, Mr. Wang agreed because it was helpful to tame the officials."

"I heard that because these Kunlun slaves are easy to use, Mr. Wang plans to let the strong Kunlun slaves multiply so that we can get better labor force!"

Li Jia felt relieved after hearing that everything was under control.

"This is very good. We will leave a few strong ones for breeding, and castrate the thin ones. We want sustainable development!" Li Jia approved of this method. Even Washington often uses strong black people to breed, so as to obtain the best labor force.

, considered control.

With strong curiosity, he came to the area where Tiaoren was imprisoned to see how effective these black slaves were! After all, the Arabs' training of black slaves is world-famous.

The boundary where the Liao people were imprisoned was not far away, but it was indeed very large. The enclosed space was about the size of ten football fields, and the wooden fence about ten meters high prevented most of the Liao people from escaping.
Chapter completed!