Zhao Dan watched Zhao Heng get off the carriage, accompanied by several followers, walking towards the Huaxia Academy not far away.

Starting today, Zhao Heng will enter the Huaxia Academy as an ordinary student to study, and the gimmick of Prince Zhao entering the Huaxia Academy will surely promote the reputation and importance of the Huaxia Academy among all the people in the world.

In short, this is a matter that can be considered a benefit for both the Zhao royal family and the Huaxia Academy.

After Zhao Heng left, Zhao Dan did not immediately ask the car to turn back to the palace city, but continued to go north and enter the Guocheng of Handan.

The city of Guo was very lively at this moment, with countless people bustling, completely recreating the awesomeness that Yan Ying bragged in front of the King of Chu back then, "There are silences, sweats and rains, and they are all in line."

Just by judging by the prosperous scene in front of you, you can confirm with great certainty that Handan has indeed become the well-deserved largest city in the world.

Zhao Dan did not show off his kingly carriage today, but was riding in a carriage, which was equivalent to a private visit, so it did not attract much attention.

Zhao Dan looked around and soon found that there were many civilians on both sides of the road sweating profusely and digging ditches.

This is from Zhao Dan’s instructed to officially launch the “Handan Sewage Discharge Canal Project” this year.

It is said to be a canal, but in fact it is just digging a drainage ditch in front of every household.

But don’t underestimate these drainage ditches. With these drainage ditches and timely maintenance, the stinky problem that has always plagued Handan should be much lessened.

In fact, Zhao Dan recently discovered something very interesting in the memorial presented by the Supervisor, that is, another group of people are actively helping Zhao Dan solve the problem of excrement.

Who is it?

merchant.

In the past two or three years, a new profession began to emerge in Handan City, the manure picker.

Every day, these dung pickers would take a rickshaw to every household in Handan City to ask for feces.

The residents of Handan City are undoubtedly very welcome to these behaviors of the manure pickers. The manure pickers often take no time to leave with a truck full of feces.

Where to go?

These continuous feces were brought to a manor a few miles outside the city of Handan Guo by the feces.

According to the supervisory guard's return, the owner of this manor was no one else, but Lu Buwei.

A smart man who was once the top businessman in the world.

Obviously, even though Lu Buwei is not in Zhao State at this moment, there are still people with keen eyes in the Lu family.

What do you want so much feces to do? Of course it is used as manure.

With the strong promotion of Zhao State, farmers near Handan City have gradually accepted the idea that manure can increase production and actively applied manure to farming.

But the problem is that no farmer’s family has dozens of acres of land, or even hundreds of acres of land.

In addition, after the emergence of the curved plow, the requirement for the quantity of manure in meticulous farming has also become higher. It is definitely not enough to rely on one's own people and livestock to produce manure.

So the contradiction between the supply and demand of manure emerged.

With demand, merchants naturally emerge.

Zhao State is not Qin State. Qin State severely cracked down on merchants. Although merchants are not very respected in Zhao State, at least there is absolutely no problem in doing business.

So when the farmers near Handan City had a demand for manure, the Lu family immediately seized the opportunity and began to hire a large number of manure collectors to transport the manure out of the city and then make manure into manure in the manor, and then sell it to farmers near Handan City.

There are hundreds of thousands of people in Handan City, and the feces produced in a day are astronomical figures.

Even if you collect some of these feces, it is an extremely objective manure yield.

According to the information presented by the supervisor, "The Lü family has sold manure for more than two years, and the scale is increasing. It is roughly estimated that the annual income will be no less than the profit of selling salt and iron."

Salt and iron are both super profitable industries.

If you are a person, you have to eat salt. Needless to say, Qi, which was the first to dominate Duke Huan of Qi in the Spring and Autumn Period, began to make a fortune by salt.

There is no need to say much about iron, weapons, farm tools and other things.

Salt and iron are both common in strategic materials.

In the era of Emperor Wu of Han, salt and iron were directly taken into the government and continued, which shows how the kings of later generations attached great importance to salt and iron.

Selling manure can actually be compared with the benefits of salt and iron? This is terrifying.

What Zhao Dan didn't know was that if the development of manure would even give birth to an industry.

This industry will be composed of manure deductors at the bottom and manure factory owners at the top, and while solving the manure deducting problem for the official, it will produce a huge amount of wealth.

Yes, it is a huge amount of wealth that everyone unexpectedly has.

In the late Qing Dynasty and the Republic of China in history, the Beijing manure merchant Yu Deshun, known as the "No. 1 manure valve in Tianzi", owned 1,500 acres of fertile land, had more than 100 properties in Beijing, and also had a large amount of deposits in at least twenty foreign banks.

Yu Deshun was definitely a super rich man in that era, and these jealous wealth were all brought to Yu Deshun by those stinky feces that made people look terrified.

Just as Zhao Dan was thinking, the carriage he was riding had already passed the civilian area and arrived at the workshop area of ​​Guocheng, Handan.

This is where the craftsmen of Zhao State live and work.

Above the workshop area is filled with black smoke, even the sun is blocked, making the sky here appear gloomy.

This is mainly caused by the large amount of smoke emitted by the iron smelting workshops in the workshop area during the iron smelting process.

For the sake of confidentiality, blast furnaces did not appear here, but were replaced by low, ordinary iron smelting furnaces that were only about ten feet away.

Even though he was separated by a wall, Zhao Dan could still hear the blacksmiths ding and thrust irons.

Not far from the iron smelting workshop, I arrived at a heavily guarded place.

This is the latest printing workshop established by Zhao State, which is specifically responsible for the research on printing technology.

"Who are you? Do you have an entry and exit token?" A fully armed Zhao army soldier drank Zhao Dan's carriage.

Mao Sui, who was accompanying Zhao Dan, threw out a token: "Go and call the master craftsman here, and say that the king will summon him!"

A master soon appeared in front of Zhao Dan with a piss on his back: "Greetings to the king!"

Zhao Dan waved his hand with a smile and said, "I heard that there has been a breakthrough in printing technology?"

Zhao Dan actually attaches great importance to this matter.

The dawn of papermaking has emerged. According to the guarantees of the masters, the output of paper will become exaggerated in a maximum of three to five years.

At that time, printing is a necessity.

Printing looks simple, but in fact it also has its technical difficulties.

No invention can be made casually, but it only takes the efforts of countless ancestors and practiced by generations to finally develop to the point of future generations.

So, in just less than a year, there was a breakthrough in printing technology, which actually surprised Zhao Dan.

So Zhao Dan decided to take a look in person.

While walking, the master craftsman said to Zhao Dan with pride: "Actually, this is also the great king Hong Fu Qitian. A while ago, a craftsman came from Hedong to join the workshop. This craftsman was after the public sending class that year. It was precisely because of this skillful craftsman that printing technology was able to make such a rapid breakthrough."

"The descendant of Lu Ban?" Zhao Dan looked slightly moved and asked, "What is the name of this craftsman?"

The master chuckled and said, "The great master learned that this craftsman's name is Gongshu Fuzhen! Please see, the one over there is."
Chapter completed!