The next day, in the central army, Lu Bu called Zhang Langzhong and the head of the Wooden Vessel Supervisor.

"In these fierce battles, there were a lot of soldiers injured. After a war, thousands of injured people were calculated. The amount of medicinal materials was quite large, and the carrying of Chinese medicinal materials in the military has been messy. Let's take a look at how this medicine cabinet truck?"

Lu Bu handed the drawing to the two of them. When Doctor Zhang saw it, "It's great. If you put all the commonly used medicines in the medicine cabinet, it's most convenient for Doctor to get medicine. But there are restrictions. If the road conditions are not good, the carriage cannot pass through."

"This is a place where nature can only be accessed by road conditions."

The wooden supervisor looked at the drawings: "It can be done, with a lightweight rack truck as the chassis and a medicine cabinet on it, so that the four cars can carry hundreds of commonly used medicines."

"Then start doing it. Doctor Zhang communicated with the wooden instrument supervisor in time and made it into practical things."

"OK."

Lu Bu asked again: "How many double bow chariot crossbows are there in stock now?"

"There are two thousand now in stock and two hundred thousand crossbow arrows."

Lu Bu is still very satisfied with this quantity, and these commonly used things must be in stock.

There are now as many as 1,500 wooden artisans at the headquarters, and they are divided into four workshops. This is the result of Lu Bu's control. If the number of people is not controlled, it would have exceeded 3,000.

Langzhong Zhang and the owner of the wooden ware supervision went back, and soon Zhuge Liang came again.

"Kong Ming is here, has his home settled?"

"Good morning, I've been thinking about something at home during this period. Let's see if it's practical."

"Oh, what is Kong Ming thinking about?"

"In the yard, lord, please follow me."

Lu Bu followed Zhuge Liang to the yard, and there were two large items on the cart.

"This is a city defense crossbow improved with small crossbows."

Lu Bu looked at it and found that this was a large crossbow with a large arrow box on it, which could make it very good to drop arrows.

Next to it is a wrench that can quickly get on the arrow after firing.

Unlike double-bow crossbows, this city defense crossbow has a single-armed crossbow.

"Send a launch."

Lu Bu adjusted the direction of the crossbow, aimed at the archery in front and pulled the wrench in the open space, and shot six arrows in a row.

The range looks quite far: "The stone pulls the rope to measure the distance."

Now Xuzhou Army is a dual-track system, with units of lengths of zhang and rice.

The range of the single-arm crossbow is quite considerable, with the farthest being 240 meters, and the last being 210 meters, and the actual lethality is still more than 100 meters.

"Okay, very good. When using the city defense, it can form dense firepower from a high place on the city wall, and its power is quite considerable. Arrange a thousand wooden instruments to make a practical test."

Lu Bu was more decisive in doing things and he quickly arranged it.

The second thing is more common. This is a windmill, which is used to generate wind by hand-turning the impeller and swell the millet.

"This is a windmill, used by Yangguzi. Have you ever tried it?"

Zhuge Liang was very surprised: "This lord knows it too?"

"Food is the foundation of a strong country, and agricultural tools are the key to growing good food. This is named Zhuge Fengmill, arranged to be made by Mo Jun, and it will be fully promoted if appropriate."

"I have tried to remove impurities from wheat, and the effect is good. I can also use rice to remove bran."

Zhuge Liang was very happy and went to arrange for Mo Jun to build a windmill.

Although this little thing is inconspicuous, it is practical and easy to use. It may not be acceptable to small households, but it can still be used in the production of military and civilian towns.

The hot weather is so hot that not to mention war, even the training has been changed until dawn and evening.

The most difficult time at this time was the soldiers at the post station. They transported materials, letters, official documents, etc. all year round.

There are both contributions and hard work. After four years of development, Liao Hua's ministry now has more than 300 post stations in Xuzhou, Qingzhou and Youzhou, with more than 15,000 post stations. It undertakes most of the material transportation. Due to the hard work of post stations, it usually rotates one year. Post stations engaged in transportation can change jobs and become stationed in post stations after one year of work, which avoids the fatigue caused by long-term transportation of soldiers.

At noon that day, Liao Hua was called to Pengcheng.

"Master, you're looking for me."

In the past four years, the wind and frost have become more mature.

"Yuan Jian, I have been running around in the past few years. Thank you for your hard work, but I have been working as a dispatcher and cannot exert your excellent combat capabilities. I want to transfer your position to you. I wonder what you think?"

Liao Hua clasped his fists and said, "It is the duty of soldiers to obey orders, and the lord's arrangement is."

"Let's go, follow me into the mountain, but what I see today is a military secret and cannot be disclosed to anyone."

Lu Bu took Liao Hua into the mountain, and the mountain pass was a blocked military restricted area. Even Lu Bu had to check his waist card when he entered.

The group rode for several miles and arrived at the test site.

Liao Huaxin said, what is this doing? It's so strict.

Two small iron barrels of medium black size were placed on the ground. The small one was only 80 centimeters long, the middle diameter was only the size of a duck egg, and two small claws were supported in front. The large one was installed on the heavy wooden wheels, which could be one and a half meters long. The thick iron barrel should look more than one thousand kilograms, and the diameter could be as thick as a calf.

"This small one is called the Crouching Tiger Cannon, and this big one is called the General Cannon. It is a powerful tool for siege and fighting against heavy cavalry."

Liao Hua is all confused and doesn't understand how to use this thing.

Lu Bu waved his hand and asked someone to prepare the torch and arranged for Liao Hua to block his ears.

I lit the small creeping tiger cannon first, and then I heard a loud bang.

The wooden target dozens of feet away fell down.

Liao Hua was surprised and ran over to take a look. It was amazing. The target hit it not just one shot, but dozens of shots.

Lu Bu explained: "There are shots here, and there are hundreds of mung bean-like iron sand, which are shot out in a bang. The cavalry is very powerful when dealing with the unarmored infantry."

"So that's it. It seems that the speed of the shooting is very fast, and I didn't see the iron sand."

"Yes, the speed is very fast and cannot be seen by the eyes."

Lu Bu arranged for the soldiers to start operating the general's cannon. This time Liao Hua watched from the side, and the process was not complicated. He added gun medicine, added large iron bullets, and ignited them.

There was a loud bang, and even if it was blocked, it would make the liver tremble.

This time, Liao Hua widened his eyes and finally saw the iron egg that was beaten, but the landing point was too far away and he didn't see where he landed.

After walking for three miles, the group found that the iron eggs were hit by the pile of rocks and smashed all the stones.

Liao Hua was extremely surprised. It was very hot to pick up the iron egg. This iron egg was not big, but it weighed five or six pounds. Such a heavy thing could hit so far.

"What the lord means to use this general's cannon to bombard the enemy's city walls and city gates?"

"Yes, that's exactly what it means. After forming an army, we will become the first team with artillery. No matter how strong the enemy's city is, it will not escape the bombardment of artillery. The most important thing is that our artillery can hit three miles, and the crossbows at the top of the city cannot hit so far no matter what."
Chapter completed!