The next day, Liu He got up early, took a quick wash, and went to the study. Sure enough, Xun Yu and the other two had not arrived yet.

"Come on, the boss of the system, come out and find something urgent."

"What instructions does the host have? Just go to the corresponding interface and don't call this system."

"Uh... your personality is still so cold." Liu He complained, but since his power grew, he has rarely dealt with the system. Except for some triggers such as triggering stunts in the system on weekdays, there are almost no intersection, so that he almost forgot that he is a time traveler with gold fingers.

He hurriedly clicked the system's "item redemption" interface in his mind, and then flipped down all the way to the item list of the level 4 system.

This item list has been too long since I read it, and Liu He himself has forgotten it.

Level 4 system redemption items:

1. Ordnance part:

Battleship Manufacturing Map: 800 Points.

Large military equipment map: 600 points.

2. Materials:

Kitchen Record: 500 points.

Total mineral record: 1000 points.

Rejuvenation Record: 1200 points.

Divine Works Magazine: 1000 points.

City Building Sacred Classic: 800 points.

Water control meridian: 1000 points.

Secret record of pest control: 600 points.

Three, special items part:

Global Nautical Chart: 1500 points.

Upgrade the Meditation Tower to the Soul Tower: 1000 points.

Among these items, he had already exchanged these four items, "Magic Military Equipment Map", "General Record of Minerals", "Secret Record of Water Control", and "Secret Record of Pest Control", and handed them to three smelting masters, Qian Li, Tong Jian and Zhan Lian. On the same day, outside the Huguan, he suddenly appeared in the carriage and fire beasts in the well railings. They were created based on the map. The power was so powerful that it was shocking, and this was just the tip of the iceberg in the map. As for the other three books, they were also extremely effective.

In view of this, Liu He is naturally full of confidence and is looking forward to the items in the fourth-level system.

"Come on, exchange the "Divine Works"."

"Ding... The host consumed 1,000 points and successfully exchanged items."

On the table in front of him, a very thick and exquisite book appeared, and Liu He reached out to weigh, probably five or six pounds.

I opened a few pages and saw that the content was indeed very complete, with pictures and texts, and the explanation was extremely detailed. It was simply an encyclopedia of ancient handicrafts.

"Haha, with this thing, I'm afraid I won't make any money?"

Liu He held this book and felt like he was getting a treasure, smiling from ear to ear.

"Well, this is a big treasure. It would be a waste to give it to the business directly. I think about it, who is the right one among the in-laws..."

Liu He quickly thought about it in his mind.

"The Zhang and Su families have second and third brothers as pillars, and each has a son as a local official. Both of them have become county magistrates. After I ascended the throne, I will be a great honor to be a hero and become a prefect. It is natural that they will be promoted to the official position and become prefects. For a while, there should be no need for support. But the Zhen family..."

Her eldest son Liu Zheng and Zhen Mi of the Zhen family had a baby marriage. However, although Zhen Mi had a brother, she was only thirteen years old and could not become an official. Although her father Zhen Yi inherited the position of Shangcai Ling, she was mostly empty. Her family still mainly engaged in business and was not very powerful. After she took over the power of the court, she never gave them special treatment. The existing Class A VIP merchants in the business were all accumulated by themselves.

"Well, this is my own in-laws. We should take care of one or two. The Zhen family itself operates a wide range of businesses, so it is most appropriate to do this. So I decided. After a while, I sent someone to Zhongshan to bring Zhen Yi to Luoyang and negotiate this big business with him."

Liu He looked at the book in front of him, as if he was looking at a mountain of gold, smiling and overwhelmingly happy.

Just as he was about to close the system page, he suddenly saw something.

"Hmm? This is..."

When he saw the book "The Holy Book of City Building", he immediately became interested.

"Looking at this name, it is obviously a book related to building a city. Haha, it's been a long time since the system was used, I forgot what's inside. If I exchanged this treasure earlier, I might not have the trouble with Yunhai County now. I'm really confused."

Without saying a word, he spent another 800 points to exchange the book "The Holy Book of City Building".

After the light flashed, another huge book appeared in front of me.

He opened the directory directly, searched carefully, and looked at it word by word, his eyes getting closer and closer to the book, and he wished his whole head would get into the book.

"Ha, I found it, it's true!"

He pointed his finger and the point where he clicked, and there were a few words written on the catalog: "Making various building materials-cement."

Liu He couldn't wait to turn to the corresponding page, line by line of words and pictures, which caught his eye.

He looked carefully and although he could not fully understand these contents, he could still understand five or six points more or less when compared with the pictures.

After reading it, he was a little disappointed.

"It turned out to be just a simple version of cement and concrete, not the kind I had seen in my previous life."

However, this disappointment was only a small part, and excitement and excitement still occupied most of Liu He's emotions.

This simple version of cement and concrete is based on the realization of this era. Some other materials are used instead of later chemical materials. Although there will definitely be a significant gap in hardness, according to the description in the book, it can fully achieve the "automatic filling, quick drying and fast hard" effect that He Chang imagined.

The most important thing is that this simple cement and concrete is easy to make and not expensive. Once it can be produced on a large scale, it will not only greatly save the cost of building a city in Yunhai County and smoothly control the construction period, but also allow you to make another profit.

"It's developed and developed, haha, it's a mistake, why didn't I think I came to the system to help me? I'm stupid, so stupid, haha!"

Liu He smiled while holding both books in his arms.

"I'll send someone to send this book to Yunhai County. After the Yunhai County project is completed, I reward the meritorious merchants and craftsmen according to my previous promise, and then take the opportunity to win over these craftsmen to form a team of craftsmen that belongs to me. According to the law in the book, the court will share the worries of the country when it needs it. In my spare time, whether it is to build roads or build houses for others, even if it is to build a tomb, are you still afraid that you won't make any money?"

If this can be implemented, I will be equivalent to having the first formal and professional large-scale engineering team of this era. Not only can I make a lot of money, but I can also make the roads within my sphere of influence wider than others and the city is stronger than others. Tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk

"Well, this thing is so precious, I'm really worried about giving it to ordinary people. I'd better ask someone to copy it first, and then hand it over to the Feiying Guards, so that they'd better have a trip."

Both major problems were solved, and Liu He was extremely happy and returned to Zhang Yu's courtyard running and jumping.

A few days later, the Zhen family's carriage was parked at the door of the General's Mansion. After a long time, the servants in the mansion heard a few crazy laughter from the study, which scared the servants and maids in the mansion very much.
Chapter completed!