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After turning for a long time, Li Yunfei had thoroughly figured out the details of the entire city wall, and at the same time found a lot worth thinking about, so he simply sat on a pile of throwing guns and fell into deep thought.

Seeing that his lord was chattering, Kao didn't want to disturb him, so he stood aside with the soldier and acted as a guard.

It's just that what he didn't expect was that Li Yunfei held his chin and thought for a while, and suddenly took out a blackened carbon rod, a stack of paper, and began to write and draw on it.

While writing, there are words in my mouth, and it looks mysterious.

After a long while, seeing that his master had finally stopped his pen and looked at the drawings in his hand with satisfaction, Kao stepped forward and said cautiously, "My lord, my lord?"

"What's wrong?" Li Yunfei looked up and asked suspiciously.

"The giants have dispersed, should we go back?" asked Kao, while secretly glancing at the drawings in Li Yunfei's hand, his heart full of anticipation.

You must know that on the drawing that Li Yunfei gave him last time, the design of the blast furnace has made him fascinated, and he doesn't know what a good thing it is this time.

"Scattered?" Li Yunfei said in surprise, "When?"

Just now, the group of low-level giants suddenly turned around, and two of the sand giants beat each other, and the rest all dispersed, and now the largest group was only a dozen giants. The city guard soldier next to him said, and at the same time he was a little disapproving to the young earl. Originally, I thought he was here to inspect the city defenses, but I didn't expect to start writing and painting there after wandering around for a while, and I thought of this place as the study of the Earl's Castle.

"Okay, then let's go back. Li Yunfei stretched his waist and said as he put the drawings in his pocket.

At this time, the huge crowd dispersed, the alert was lifted, and the auxiliary defense forces on the walls of the entire giant city were all relaxed. The hundred guards of the Luo Lin family, led by Martin, lined up in two teams and came to report in front of Li Yunfei.

The captain Mike also came to say some words of thanks to Li Yunfei.

After the greetings were over, Li Yunfei immediately said hello to Mike, took Kao and the others into the pod, and left the walls of the giant city.

Looking at Li Yunfei's distant figure, Mike couldn't help but shake his head.

Although the young Earl has a good reputation at present, it seems that he is still a young man after all, and he simply regards this wall guard as a play. But after all, people are aristocrats, and they don't need to do their part, as long as they are fed enough.

"My lord, you are ......" Unlike others, although Kao has known Li Yunfei for less than a day and has just been recruited by Li Yunfei, he has some understanding of this earl's ability in some aspects.

Therefore, before the pod landed, he couldn't wait to ask.

Li Yunfei smiled slightly, handed a few drawings to Kao, and asked, "I handed these things to you, can you make them?"

Kao understood that this was the result that Li Yunfei had just obtained from writing and painting on the city wall for a long time, so he immediately took it in his hand and looked at it carefully.

At first, there was no expression on his face, but each drawing had to be carefully looked at for a while, and by the time everyone left the pod and mounted their horses and began to return to Lorraine Castle, Kao had already read all the drawings.

His hand holding the drawings trembled slightly, and the expression on his face was utterly shocked!

Oh my God! This is what the Earl had thought of for a moment after inspecting the city defenses!?

If this thing is real, and it works, then ...... It's unimaginable!

Originally, although Kao had been down, he had always thought that it was bad luck and claimed to be a genius, but after seeing Li Yunfei's drawings, he suddenly had a feeling of being ashamed.

Taking a deep breath, he suddenly grabbed the reins, rolled over and dismounted, and fell to his knees in the dust with a "poof".

Martin and the others couldn't help but be startled when they didn't know what to do.

Li Yunfei stopped, looked at Kao who was kneeling on the ground, and couldn't help laughing and scolding: "Manly man, I've knelt twice a day, you're not ashamed, I'm ashamed, get out of here!"

Kao looked up at Li Yunfei, his face was full of excitement, and his eyes were a little red: "Lord Earl, I have thanked the people of Roland City for my humble position!"

Li Yunfei said: "Get up, these things are still assumptions, everything is done by you, before that, no rumors are allowed to leak." ”

"Yes!" Kao replied aloud at the thought that he was still responsible for making these things, and his body trembled a little with excitement.

But then he couldn't help but hesitate: "My lord, these things also need money, although there is no need for alchemy items, but if they are to be manufactured in large quantities, they are still ......."

Li Yunfei nodded, indicating that he understood. After all, he had only drawn some of the experience and common sense of his previous life, and the final shaped item still required a lot of experiments.

"I'll give you another 10,000 gold coins, and I'll give you two farms in the name of Count Rollin as testing grounds. In addition, you can recruit your own craftsmen, but you must recruit honest and reliable people. Li Yunfei thought for a while and said, "In addition, during the production process, you can use this method to prevent leakage." ”

At the moment, he briefly talked about the method of assembly line production in his previous life, and he nodded again and again to show that he understood.

After explaining these things, there was no word all the way, and before dark, he had returned to Lorraine Castle.

After returning, Li Yunfei immediately allocated the gold coins needed for Kao's research and manufacturing work to him at one time, and arranged for two guards recommended by Martin to follow Kao as guards and assistants.

He wasn't worried that Kao would run away with his own money, after all, judging from the other party's reactions, the importance of fame was far more important than money. And after all, Kao's son is still here, and taking a step back, those two guards also have a role to watch.

At this time, Li Yunfei deeply felt the problem of insufficient manpower around him.

After becoming the Count of Rollin, this big mess needs reliable people to handle everything. Fortunately, I was able to meet Kao today and solve my urgent need.

Of course, what gave Li Yunfei more of a headache was the problem of money!

Money is needed for the training of the 3,000 private army, money is needed for the supply of the city defense army, money is needed for the development of Kao, and money is needed up and down the entire Count's Mansion of Lorraine.

Now that he has lowered his taxes, forgiven his debts, and the iron ore has just begun to be mined again, it will be a long time before he can make money.

At present, the only living money left is the gold coins in the underground secret room of the Earl's Castle, and there are only a hundred thousand left.

It is foreseeable that after Kao succeeds in experimenting and makes large pieces of iron, which can be used to build giant equipment, he will definitely need more money.

Money, money, money, I want money......

That night, Li Yunfei was so worried that he didn't sleep well, he kept thinking about the way to get money, and he didn't even carry out his daily Douqi cultivation, but he was at a loss.

Early the next morning, while eating breakfast, after taking a sip of slimy freshly squeezed juice, Li Yunfei's eyes suddenly lit up and he thought of an idea!

"Go, get Grand Butler George and Chief Smelter Kao!"

Ten minutes later, the two henchmen were already standing in front of Li Yunfei.

"Uncle George, what is the property of our Rollin family besides that iron mine?"

"Young master, our Luo Lin family used to have a trading house, but then it didn't open again because of poor management......," George said embarrassedly.

"There are no other specialties in the Luolin Territory?" Li Yunfei continued to ask.

"Our Luo Linling, the most famous specialties are wheat and fruits, tsk, some distant nobles, specially come to us to buy fruits, saying that we have enough light here, and the fruits are sweet. When Old George said this, just when Li Yunfei was about to be completely disappointed, he paused, and then said: "By the way, there are still a few salt wells in the southeast of our Luolin Territory, but the salt brine is bitter and astringent, and there is no ......."

"And Yanjing!?" Hearing this, Li Yunfei couldn't help but be overjoyed, someone sent a pillow when he was really sleepy, and the idea he had just now seemed to be realized!

Then he immediately looked at Kao, who instantly understood that his own earl had a good idea again!

Just those drawings yesterday had already made him so excited that he didn't sleep all night, I don't know what kind of whimsical ideas were this time?

Li Yunfei immediately told Kao what he had just come up with.

The idea is very simple, that is, to make a soda drink! People in this world have not tasted the taste of sparkling drinks, and if they can make it successfully, it will definitely be a huge business opportunity!

However, this thing is easier said than done, if you want to get a large amount of soda powder, you first need to make soda ash, and the manufacture of soda ash requires a series of chemical industrial processes. The raw material can be used with brine from the salt well, while other things still need to be tested again and again.

After listening to Li Yunfei's words, Kao thought carefully for a while and said, "My lord, there is such a thing as alkali in the kitchen, but the large-scale manufacturing you mentioned is really too troublesome, and it still requires corresponding time and ...... This gold coin ......"

Li Yunfei also thought at this time that his idea was not very reliable, and if he wanted to get money, he had to spend money first. But now that he has this idea, he doesn't plan to give up completely.

He rubbed his temples at the moment and said, "I'll give you five hundred gold coins, you can do it if you can, and forget it if you can't do it." ”

When Kao retreated and looked at Li Yunfei's sad face, Old George couldn't help but feel distressed and said, "Young Master, don't worry, why don't we raise the tax a little more?" It's all to blame for the Earl of Carden who robbed our trade routes, otherwise, the price of our Rollin family's property would not have been so low. ”

Hearing this, Li Yunfei, who was still lying on the chair rubbing his head, jumped up with a "poof" and said with joy: "What? Our trade route has been robbed? Great! Snatch it back! Beat him! Let him lose money!" Listening to his tone, it was as if he had robbed someone else's things.

"Martin, Chuck, go, come with me for the money!"