After returning from the hall of the chamber, Zhao Feng's mind was full of the matter of the attack on the city by the demonic beast, and he thought about it for a long time. Zhao Feng decided to make some defensive means to resist the siege of the Demon Beast. Thinking about it, Zhao Feng took out a pen and paper and began to record the method of defending against demonic beasts.

Early the next morning, Zhao Feng hurriedly got up.

"Zhao Jian, you said that these 100 optical modules will be handed over to the old man of the artifact shop, and he will be responsible for selling them in the future. Zhao Feng looked at Zhao Jian, who was going out at the same time as him, and said to him.

Looking at Zhao Jian, who was not moving, Zhao Feng said helplessly. "I'm only in the City Lord's Mansion today, and I won't go out. You go and come back quickly. ”

Seeing that Zhao Feng didn't go out today, Zhao Jian could only nod helplessly, took the optical module and quickly left the house. When he was at the gate of the City Lord's Mansion, he also specially instructed the subordinates guarding the door that if Zhao Feng left the mansion, he must be stopped, and he must not be allowed to go out of the City Lord's Mansion.

Zhao Feng picked up the manuscript paper he had written last night and walked to his research room. The only thing I can do for Warcraft now is defense. As long as you can make cement, I believe that the defense level of Warcraft City will go to a big step, and you can only understand some of it, and you don't know how to operate it, so you can only experiment again and again, hoping to catch up.

It's not that I haven't thought about weapons, I don't have to think about hot weapons, I can only think about cold weapons. It's just that the cold weapons on the earth that I know are not one or two points worse than the weapons of the other world. I can only help improve the purity of steel and speed up production. But for Warcraft City, which has already prepared for a long time, there are only a lot more weapons.

"Go and prepare some white stone, clay, and the slag left over after the iron ore is refined, well, prepare more. Zhao Feng instructed his subordinates to prepare things.

The white stone is similar to the limestone on the earth, but the name is different, and the material is somewhat similar. It's a pity that I didn't find the gypsum ore, and I don't know if I can succeed.

After thinking about it for a while, I felt that I still had to find a fire-based great mage to come over, and magic was still very helpful for experiments. There is no need to look for the big fighter, Zhao Jian will come back in a while, and he will be a good coolie.

Zhao Feng hurriedly walked to the hall of the chamber, and when he arrived at the hall of the chamber, he saw his father sitting in the middle of the hall talking with a few soldiers. Didn't bother, waited quietly at the door.

"You have organized a team to go deep into the Warcraft Forest to conduct a detailed investigation, and as soon as there is definite news, come back immediately to report it. With the order of the city lord Zhao Tian, all the soldiers immediately received the order and walked out of the hall of the chamber.

Seeing the soldiers come out, Zhao Feng hurriedly stepped forward. "Father, can you send a fire archmage to help me do a more important experiment?"

"What are you going to do?" Zhao Tian was a little confused and a little curious, what experiments could require the help of the Great Magister.

"It's some magic experiment, father. "If you really tell the truth, I let the Great Magus go and get the white stone, and my father doesn't kill him.

"Okay, I'll let you Uncle Yan come over in a while. However, all your future optical modules must be handed in, and you are not allowed to sell them. Zhao Tian said sternly to Zhao Feng, since there is no way to let the whole city have optical modules in a few months, then you can only equip the army first and maximize the advantages of the army.

"Ah, you can't sell it, what about the money, father, don't covet your son's hard work, it's not easy for your son to earn some money. "When I heard that I couldn't sell it myself, Zhao Feng was not in a hurry, he knew that his father would never be able to come up with so much money.

Zhao Tian smiled. "Also, it's not easy for you to earn some money, son, so the father will buy it at the price of 1 gold coin per optical module. Okay, that's it, you go back quickly, and I'll let Zhao Jian go to you to get the optical module in the future. After speaking, Zhao Tian hurriedly urged Zhao Feng to leave.

"Father, you are so ruthless. Zhao Feng, who was dumbfounded, was pushed out of the hall by his father. After a long time, Zhao Feng looked back at the door of the hall behind him, which was tightly closed, and shouted, hurriedly leaving this sad place.

I was actually cut a hundred times the price, one dragon coin and one optical module, isn't this a free gift? Zhao Feng really wanted to hit his head to death, who called the bargain was his father, and he could only admit that he had suffered a loss.

Back in the lab, look at the white stone, slag and clay that have been prepared.

I tried to smash the fireball technique on a piece of limestone, and found that only a small piece of limestone turned white, and my magic power was still not good, so I could only wait for Uncle Yan to come over.

Zhao Feng fell into deep thought, hoping that the method of making lime on the earth would be successful, but not like gunpowder.

"Xiaofeng, what are you thinking, you asked your uncle to come over and help you do some experiments. Zhao Yan came to Zhao Feng curiously, he was also very curious about what kind of experiments Zhao Feng did that could be used by himself.

Zhao Feng, who was interrupted by Zhao Yan, saw that Uncle Yan had arrived, and hurriedly said. "Uncle Yan, you use fire magic to refine all these white stones, slag, and clay. ”

Zhao Yan lost his voice. "Ah, call me

It's about burning these things. ”

"There are still some in the backyard, and there are more in the backyard. Zhao Feng said with a dry smile, the backyard is indeed a bit much, but I didn't expect to ask my subordinates to prepare a little more, they actually prepared so much.

took Uncle Yan to the backyard and saw several piles of limestone, slag, and clay that were several times taller than people.

"All of them. Zhao Yan's mouth trembled, this was a preparation to make himself desperate.

"It's not Uncle Yan either. Zhao Feng hurriedly said that he was afraid that Uncle Yan would do a magic spell, and all these things would be forged.

Hearing this, Zhao Yan suddenly felt better, as long as it wasn't all forged, it was okay to forge a little.

"For the time being, we will forge half of everything first, and then we will talk about Uncle Yan when the rest comes. ”

"Got it. Listening to Zhao Feng's words, Zhao Yan felt that his mouth began to tremble again, he really shouldn't have listened to Zhao Tian's words, Zhao Yan shouted angrily.

As Zhao Yan released the fire tornado, everyone only felt a heat wave coming, and then they all walked out of the backyard.

Zhao Yan refined the materials in the backyard one by one. In an instant, the entire backyard was covered with dust. Zhao Yan was panting and coughed violently due to the inhalation of dust. Completely collapsed on the ground, Zhao Feng hurriedly stepped forward to help Zhao Yan into the inner hall of the laboratory, so that Uncle Yan could rest more.

The magic of the fire tornado is not for nothing. The limestone, slag, and clay in front of you do not need to be milled at the same time, and all of them are turned into powder.

As Zhao Feng asked his subordinates to put the powder into a bag one by one, take it into the laboratory, and start experimenting on what ratio is more suitable.

"No. 1, you take notes, record the proportions and samples in detail. No. 2 and No. 3, you come and do the proportional mixing. On the 4th, you will carry out the water mixing experiment with the mixed cement. As long as this cement experiment is successful, you will no longer be subordinates, understand?" Zhao Feng said solemnly to the four of them.

The subordinates have no name, in addition to making great contributions, the main family gives a name, otherwise it is a nameless person who has no name and no surname for a lifetime.

"It's the young master. The four of them immediately knelt on the ground excitedly.

As the experiment began, after a day's work, the cement was made, but the hardness was really unimaginable.

With a slight pinch, the cement block was easily crushed. If you use this to build a city wall, you don't need a demonic beast to come, and if a gust of wind blows, the wall may fall by itself.