Seeing Han Fei observing the steelmaking process, he wiped the sweat on his forehead and said, "Childe, you said that I will collect this slag after adding limestone, and now there is a lot of this slag, but what is the use?" ”

"This slag is a good thing, and it can be used to produce a very powerful material." Han Fei said with a smile.

Han Fei hadn't told Chen Kai about this knowledge yet, Chen Kai said curiously: "Son, this slag has come out, just tell me, otherwise I probably won't be able to sleep again at night." ”

Han Fei laughed twice, "Actually, in addition to making iron, this limestone can also be calcined into a material - cement!" Because the slag contains a lot of cement, it can also be used to calcine the cement, so you can collect it so that it is not wasted, otherwise it would be a pity that the slag is discarded. ”

"Cement." Chen Kai and Qian Dafu glanced at each other.

"Childe, if this cement is used to build city walls and pave roads, wouldn't it be invulnerable." Chen Kai was surprised.

"No, cement is still the most basic thing, and what is made of concrete is really invulnerable." Then Han Fei told Chen Kai about the concept of concrete.

"......", Chen Kai can no longer describe his shock in words, he said: "Childe, if the walls of South Korea are all built of concrete, then several other countries can only eat outside the city walls. ”

Han Fei smiled: "Now you are thinking a little too much, although this concrete and cement are magical, but with our current production speed, it is good to be able to meet our own use." ”

After being excited for a while, Chen Kai was suddenly a little decadent, and he said: "Childe, now you teach me too many things, but you see, there are too few craftsmen, but this little work is no longer busy, and it is estimated that there is no manpower for this calcining cement." ”

During this time, some craftsmen were recruited, and the number of craftsmen reached five or eight, but it was obviously still not enough, and he couldn't help but feel a little helpless, "I'll figure out a way to do this, take your time, and produce as many things as you can." ”

Chen Kai nodded helplessly.

This time, Han Fei came over, one was to check the application of limestone and graphite in ironmaking, and the other was to let Chen Kai understand cement and prepare for subsequent production.

As the saying goes, if you want to get rich, you must first build roads, and the smooth flow of traffic can greatly promote production, and because of the characteristics of the people in this era who gather in the city and live, there is no need to build roads like modern times, hundreds of miles at every turn.

The application of crucible ironmaking has matured, and now graphite ore and limestone ore are only in the hands of Han Fei, which is equivalent to his monopoly on crucible steelmaking technology.

However, the lack of labor is still his shortcoming, and now it is a small fight.

……

The craftsmen he found were bronzemasons, clay masons, carpenters, stonemasons, etc., many and miscellaneous, and Han Fei wanted to realize his dream, and he had to use these craftsmen.

However, the various things of these guys also give Han Fei a headache, for example, to create the simplest hunting tool such as a wooden stick spearhead, these guys often like to complete a whole one by themselves, from choosing a wooden stick, cutting and slipping, to building a spearhead, and connecting it, without letting others interfere at all.

But the simplest wooden stick with a spearhead would take days, and at this speed, it would take months to build a finished spear or something.

Han Fei was difficult to accept, and then he wanted to choose the assembly line method for casting, but found that a more serious problem came.

I didn't expect that there was no unified weights and measures in Korea!

This caused the spearhead of one craftsman to be cast on the wooden stick of another craftsman, and there was no connection at all.

Han Fei had a gloomy face, looked at the hundreds of craftsmen in front of him, and asked sharply, "How long is a foot?" ”

Suddenly, these people chattered and quarreled.

"Stretch out your arm, to the elbow joint, almost a foot ......."

"No, no, this foot is too long, it should be with your hand open, and the thumb and little finger are stretched out to the maximum, this is one foot."

"You're not right......

Seeing this, Han Fei also shouted at them: "Enough! ”

There is no unified weights and measures assembly line production, there is no way to apply it to practice, so unified weights and measures have become a top priority!

So, these craftsmen changed positions with Han Fei and began the so-called setting weights and measures.

Nowadays, what is commonly used in life is nothing more than length, capacity, weight, and area.

Han Fei is accustomed to using the decimal system.

And the first one is to determine the length.

Han Fei abolished the original chaotic quadruple system, heparchal system, octal system, decimal system, and hexadecimal system.

Han Fei clearly stipulates that one zhang is equal to ten feet, one foot is equal to ten inches, and one inch is equal to ten.

Thinking that he came up with it, Han Fei used the inch to determine the length.

"Fetch some fragile sticks!" Han Fei commanded the two craftsmen.

Immediately, the two craftsmen brought back a thin wooden stick.

"You, you,......, you, you, come forward for me!" After getting the thin wooden stick, Han Fei casually pointed to ten people and walked out.

The eight people also walked out when they heard the words, and then Han Fei handed over a few more people, distributed the thin wooden sticks in their hands, and said, "Measure their middle knuckles, how long the bottom section is, and break the stick into how long." ”

"Whoa!" Those craftsmen with thin wooden sticks in their hands also responded, and then according to Han Fei's request, they went to measure the length of the lowest joint of the middle fingers of the eight people.

It didn't take long for Han Fei to get back eight inch-long wooden sticks with a slight difference in length.

Han Fei picked out the shortest and longest of them, and asked people to bring over the silk thread, and measured the total length of the remaining eight inch-long wooden sticks.

Fold the thread in half three more times, and obtain one-eighth of the length, before he said to the crowd: "This is the length of an inch!" ”

Someone brought out another wooden stick and drew it to a foot in length.

Han Fei held a one-foot thin wooden stick in his hand, looked at the craftsmen and asked, "Is there a bronze craftsman?!" ”

There are now only a few craftsmen here, but there are enough craftsmen in the area.

There were several bronze craftsmen who came out.

Han Fei handed them a few determined rulers and wooden sticks and said, "You make a bronze ruler for all craftsmen, one foot long, with a scale on it, and the name of the craftsman engraved on the back, and each craftsman carries it with him to prove his identity!" ”

"Yes!" These bronze craftsmen took the road with them.

Now that the unit of length has been determined, the rest is easy to do.

The weight unit is easy, but there is no need to make it as fine as the length unit, Han Fei selected a few weight units commonly used in Korea, such as liters, buckets, and stones.

You must know that in South Korea, the Central Plains are the weight unit and the capacity unit are the same, a liter of grain is a pound of grain, but the conversion unit of bucket and stone is different, Han Fei used the decimal system, that is, the bucket is set to ten catties, and the stone is set to a hundred catties.

Han Fei asked several people to find different rice buckets and came back, removing the largest and smallest, and getting a more pertinent wooden bucket capacity.

As for the area unit, but when applied to the acreage, Han Fei also used the nearest three units: cent, mu, and hectare, one hectare is equal to 100 mu, and one mu is equal to 10 mu.

One field is four zhang long and two zhang wide, and each mu is twenty zhang long and four zhang wide, which is not much different from the mu system prevailing in Korea today.

So it took a whole day to establish weights and measures, and Han Fei was quite complacent, so he set out to give these craftsmen the identity of a craftsman.

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