"Haha, I don't know if the prince has arrived, I missed the distance, forgive my sins." Yang Heng intercepted the path of the prince of the Li family halfway, and he actually said such a sourly.

"Haha, it's easy to say, it's easy to say, it's not that this king didn't go to inform your county." Li Daozong also immediately bowed his hand to Yang Heng, "I knew that your kid would go to report the news, come, nephew, tell Uncle Wei what you think." ”

Li Daozong complained about his son, and then pulled Yang Heng along with him.

"Lord Wang, what do you think of this avenue I designed?" Yang Heng pointed to the road under his feet that was beginning to take shape. "You're trying to build a road in the grassland?" "Well, yes, my road is preparing to lead to the envisioned border trade city, Lord Wang, look here, after a period of transportation, this road has a prototype, plus I arranged for people to dig ditches on both sides, isn't this a gallop road, and I also plan to pave this gallop road with cement, so that this is a fast gallop road."

At first, Yang Heng did not plan to build this road first, but when the carriage transporting materials passed here, it slowly pressed out a road, but the cars were all heavy vehicles, once the road was depressed, it affected walking, Yang Heng temporarily transferred some people to dig ditches on both sides of the road, and the excavated earthwork was just paved on the road, and slowly this road was formed. In this way, the soil on the new mat is compacted, and then it is pressed by the wagon, and the shape of the road is even more obvious. Even. Yang Heng also planned to be on both sides of the road. Rows of trees were planted on the outside of the ditch, so that the road had a later shape.

"But nephew, what should I do if there is still a river crossing in this city defense?" Li Daozong raised a very practical question, you must know that the inside and outside of the Great Wall pass through the county seat, if a prosperous gallop road passes through the county seat, it is easy to let some spies enter the city and open the city gate without paying attention. Then the city is in danger.

"This, Lord Wang, I plan to close the gate of the county to the outside of the city, if there is no military action, the general will not open the door, and over there, that is, a separate pass on the Great Wall, and even build an iron bridge over the river over there, so that the problem will not be solved, and there is no trading area in the county. This saves you from trouble. ”

"Well, that's a good idea. In particular, a separate jack gate should be set up on the city wall, so that if the enemy army enters the Great Wall, the city gate can be closed in time. ”

"Jack Gate?" "Yes, this is according to your assumption, if someone comes in, then it will be too late to close the city gate, and it is okay to put a jack gate, and we still have the city on the side, this road is feasible, isn't it appropriate." Li Daozong said very easily, but how to do this jack gate?

"You're thinking about how to make the jack gate, don't you have a lot of steel, you can make it with steel?" Oops, I forgot about this, sometimes, it's really not as flexible as the minds of the ancients, Yang Heng patted his head hatefully, although he hadn't seen the jack gate, but Yang Heng understood its principle, this is a kind of thing mentioned in the commentary of the previous life, and even in the game, that is, a steel plate, slide it on both sides, and pin it with a mechanism, when it is urgent, knock off the mechanism with a hammer, and the jack gate will fall, and then it will be a lot of trouble to lift the jack brake up, But a war will also change because of the addition of the jack gate, and even Yang Heng can completely isolate the city wall from the city gate, people can't go up and down the city wall to the city gate, nor can they go up to the city wall from below, this is just a small change, and the people guarding the city gate are divided into two parts, one part is to open and close the city gate under the city, and the other part is to look at the jack gate on the city wall, and there is a lookout, this, Yang Heng is more and more happy to think about it, "Well, just do it, thank you Lord Wang, but this needs to be reported to Your Majesty, right?" "That's nature, you think you can open the gates on the Great Wall and build a bridge over the river, let's go, let's go to your so-called castle."

As he spoke, Li Daozong sped up the speed of the horse, but what he was most concerned about now was the matter of the castle, and he didn't know if this thing was very suitable, otherwise it would make Yang Heng stop work.

Now the first castle is already in the initial scale, and it is even about to be capped, and at this time, Li Daozong came.

"Brother, this is the castle you are talking about, and it's not very good, such a small building?" Li Yuncong looked at the building in the distance and asked with some confusion.

"I said dude, don't underestimate this castle, if it is a person from outside, they don't have giant trees, no trebuchets, it is difficult to capture this place, and this place does not need to be built too big, but can temporarily put down more than a thousand head of livestock, more than a hundred people will become."

"Ming Gong, Ming Gong." When Yang Heng and Li Daozong got closer, the craftsmen and the grassland tribes all greeted Yang Heng, "Come, let me introduce to you, this is our Tang Dynasty's Li Daozong Li Wangye, this is the little prince." "The prince is good, the little prince is good." It's a mess of greetings, but fortunately, no one knelt, this is where Yang Heng is more satisfied, at this stage of Datang, people's kneecaps are still relatively hard, not that they have to kneel casually, that is, in the case of great gratitude, or some other special circumstances, there will be kneeling things.

"Okay, you're busy with yours, I'll take a look." As he spoke, several people entered the construction site, "Lord Wang, you put this on." Yang Heng took out a few willow hard hats from the side and gave them to Li Daozong, as well as Li Yuncong, "You guys, don't come in, it's too small." ”

"What is this?" Li Daozong took the helmet and asked, "This is a helmet to prevent falling objects from heights." Yang Heng just said simply, and he put it on his head first, "Well, this is a good thing, I don't know if it can be used on the battlefield?" "This, it can be, but it is not durable, if you smash it a few more times, it will break down quickly." "I can stand a few smashes." As he spoke, he not only put it on, but even struck it a few times with his fist, "This thing is better than an iron helmet, at least it is light and brisk, and there will be no sound, it can withstand three smashes, and a war is basically over." ”

"yes, it's also very light to use this to weave rattan armor, but it's a little afraid of fire." Yang Heng also suddenly remembered, isn't there a rattan armor army in the Three Kingdoms, as long as these branches are processed, they can be completely woven into rattan armor, and even horse armor.

"Don't talk about this, write it down first, you can introduce me to the structure of this castle first." Li Daozong still remembered that he had come to inspect the castle, so naturally he didn't say anything else.

"Lord, you see, this castle has a radius of fifteen zhang, this side is the front yard, the front yard is divided into two floors above ground and underground, these two floors are placed in the ground for large livestock, the upper floor is for some small livestock, although a little crowded, but you can put the livestock in this one in, and the walls of the castle are made of bricks, cement, and stones, that is, with giant trees to impact, it is difficult to hit in a short period of time, the height of the wall is more than three zhang high, it can completely avoid outsiders to climb, naturally, it is impossible to persist after a long time, But what we need is three or two days, isn't it, and here, there is a well,......" Yang Heng took Li Daozong to introduce him to the structure of this castle one by one.

"The most important point is that if there are enough people here to defend the direction of the grassland, but if our army comes to attack, they will not be able to hold on, I have additional sharp weapons, this Your Majesty knows."

Yang Heng's so-called sharp weapon is naturally gunpowder, and even if you don't use gunpowder, as long as you use a trebuchet far away, it is very simple to smash this castle to the ground. This is the reason why Yang Heng is confident in building this castle, and the foreign enemy, they have the ability to transport some stones over a long distance, and there are trebuchets, even if they are transported, it will also delay their speed, and before they can attack, support will come. (To be continued......)