－－－－－－－－－－

When he ran to the gate of the Wei State Mansion, after Yang Xile stopped his mount, he did not dismount immediately, but turned around and asked Yang Dongdao beside him: "Do you know who the little woman was just now?" Whose children are they? ”

Yang Dong was stunned for a moment and then shook his head, "Fourth son, I don't know the little one!"

After taking a cautious look at Yang Xi, Yang Dong asked cautiously, "Fourth Prince, why don't you send someone to investigate it immediately?" ”

He didn't know what Yang Xi meant by asking, and he couldn't figure out whether Yang Xi had taken a fancy to this little lady, or if he wanted to get back face for the people in Mrs. Qiu's mansion, so he could only reply carefully.

"No need!" Yang Xi jumped off the horse as he spoke, threw the reins to the people who greeted him, and strode into the mansion.

He seemed to be interested in the little girl surnamed Guo just now.

What kind of people will the children of the Guo family be? Yang Xi was full of curiosity, but he was not in a hurry to send someone to investigate.

Yang Guozhong did not return to the house, and heard that he went to the palace, probably to discuss things with Emperor Li Longji.

After talking to her mother Pei Rou, Yang Xi returned to her room, closed the door, hid to write something, and drew a few pictures. After handling the matter, he also left the house and went to find Yang Guozhong.

Yang Guozhong was doing things in the political affairs hall, and when Yang Xi asked to see him, he had just finished discussing things with Wei Jiesu, Wei Fangjin and others, and was very surprised to hear that Yang Xi came here to find him.

"Xi'er, you're going to rush back to Tongguan after nightfall, why didn't you take a rest in the house in the afternoon, why did you come to the palace again?"

"Father, the child just went to the West Market and bought some things he needs, but there are more things he needs that he can't find in the West Market, and he wants his father to help," Yang Xi said and took out a copy of the things he wrote when he returned home just now from his arms, handed it to Yang Guozhong, and whispered: "Father, these things are things that children need, and they are very useful and can be used in war." It's just that the child can't get it for the time being, and when he went to the West Market for a while, he only found a few things, and I believe that there are many things written on it, and the father must have a way to get them. ”

Yang Guozhong took the manuscript written by Yang Xi suspiciously, and after looking at it carefully, he was very surprised, and asked in a low voice: "Xi'er, what do you want so much saltpeter, sulfur, and charcoal for?" And crystals? ”

Knowing that Yang Guozhong must have doubts, Yang Xi also explained in words that Yang Guozhong could understand as much as possible: "Father, saltpeter, sulfur, and charcoal are all things that can be burned. The child thought that if there were easily burning materials used to defend the city of Tongguan, these flammable materials could be used to inflict great damage on the rebels when the rebels attacked the city, so he wanted to collect some and use them before the battle. The rebels should still find a way to attack the city, and if they can stock up on these supplies in Tongguan, it will be of great help to defend against the enemy!"

As an excellent special forces commander in later generations, he has rich experience in how to train special soldiers with super individual combat capabilities, and he is also familiar with commanding small-scale special forces. Special forces also have some special abilities that are not known to many, that is, their super hands-on ability, such as **. In later generations, Yang Xi was an expert in making bombs, as long as he was given raw materials, he could quickly make bombs of various powers, and after crossing over to this era, he also immediately thought of making super-powerful explosives.

During the Tang Dynasty, gunpowder was not used in the military. Yang Xi probably knew that it was only at the end of the Tang Dynasty that historical records recorded the use of gunpowder, and there must have been no such powerful weapons in Li Longji's era, otherwise it would have come in handy during war. It's just that Yang Xi also knows that according to the conditions of the Tang Dynasty, it is impossible to make powerful explosives.

However, as long as gunpowder with ordinary explosive power is produced and used in warfare, it is likely to play a decisive role.

Many things are the most deterrent when they first appear, and Yang Xi believes that gunpowder must have this effect as well, so he wants to make it as soon as possible. The proportions are completely clear to him, but they have to be adjusted according to the purity of the saltpeter now. In addition to charcoal, which is easy to obtain, these other things are not easy to obtain, so I can only turn to my father for help.

He originally made the finished product, surprised Yang Guozhong or Li Longji with the power of the finished product test, and then asked the imperial court to give him strong support. But today, after visiting the east and west markets, I felt that these raw materials were difficult to obtain, so I could only ask my father Yang Guozhong for help.

"Well, Xi'er, since you think these things are useful, then my father will definitely find a way to raise some for you," Yang Guozhong didn't ask anything more after hearing Yang Xi say this, and immediately agreed.

"Father, the child designed these styles of weapons, and I also hope that my father can supervise the craftsmen of the Ordnance Supervisor to build some of them!" Yang Xi said, took out a few more manuscripts, and handed them to Yang Guozhong, "Father, this is a weapon that the child figured out when he was in Tongguan and felt that it was very useful, but I don't know what the actual effect is, and I hope that my father can urge the craftsmen of the Ordnance Supervision to build it first, and then see the effect of use!"

In addition to preparing for the production of telescopes and gunpowder, Yang Xi also had to build some weapons used by special forces, such as special daggers, three-edged stabs, and sabers, which were most commonly used by cavalry in later generations. He knew the structure of the three-edged thorn and special dagger very well, and the drawings were also very fine. But he had never used a saber with a certain arc, so he could only draw the structure from memory.

In the past few days in Tongguan, Yang Xi saw that the sergeants used straight-edged horizontal knives, and there was no curvature of the blade surface, which ensured the solidity of the combat knife, but it was a little worse in terms of ease of use and killing effect. In the late nineteenth and early twentieth centuries, cavalry was still used in large quantities, and Yang Xi knew that the cavalry at that time used long, slightly curved sabers. can also understand the meaning of such a design from the structure of the saber, since there is no such weapon in this era, then Yang Xi is ready to figure it out. If everyone thinks that it is more convenient to use and the slashing effect is better, then it can be suggested that the imperial court produce it on a large scale.

After listening to Yang Xi's explanation, Yang Guozhong, who was a complete amateur in military affairs, looked like he didn't understand, but in the end he nodded and agreed to Yang Xi's request, "Xi'er, my father will take care of these things for you, and I will let the craftsmen of the ordnance supervisor hurry up and send them to Tongguan urgently!"

"Father, there's still this thing!" Yang Xi took out another pattern and put it in front of Yang Guozhong, "Father, today's war horses are easy to get injured, and the child thinks that if you can make an object and put it under the horse's hooves, even if the horse's hooves step on hard objects, it will not be easy to be injured!"

The horseshoe did not appear in the Tang Dynasty, this is the conclusion that Yang Xi came to after riding a horse, but he has not seen the appearance of the horsefoot, so he can only rely on his own speculation, roughly draw a look, and how to make it depends on the smart craftsmen of the Tang Dynasty to figure it out by themselves.

However, Yang Xi believes that if all the things he just said to Yang Guozhong are produced, it will definitely make the combat power of the Tang army change drastically!