Datang: Li Shimin begged me to rebel

Jiang Feng was calculating carefully, but he quickly crossed out 500 catties of salt again. The reason for the slow efficiency in the early stage was that the salt field was being built in the early stage, which slowed down the overall efficiency. Jiang Feng quickly recalculated a figure, the average daily salt output rate of a person is about 750 catties.

According to the calculation of this efficiency, it should not be difficult to increase the annual output of 12 shi with a few times more manpower, because the salt production rate will definitely drop to an extremely low figure in winter, so the production must be increased in summer and autumn , I just don't know if this salt lake...can sustain such development.

Of course, Jiang Feng didn't know that even if the entire salt lake could supply the entire Datang people for more than 1000 years, it would be fine.

In fact, there are many salt lakes in Qinghai, but it is a pity that you can eat the salt directly, that is, a tea card, like the Chaerhan Salt Lake in later generations, which is bigger than the tea card, but the Chaerhan Salt Lake is famous for potassium salt, that thing It is an important source of fertilizer and industrial salt, not table salt.

What Jiang Feng has to consider now is not only the problem of brine, he is also thinking about how to improve the brine, filter out the impurities in it, and produce better quality salt. His Highness said that he will systematically teach them about chemistry after a while , can be used to study the extraction of table salt.

During this period of time, Jiang Feng took a lot of words from these working Tuyuhun nobles. For example, the Tuyuhun nobles have always known about the salt in Chihai, but they blocked this news. Uncover the salt cover on the top, and the salt dug out from below will have no impurities.

Moreover, Jiang Feng also heard that the salt here was once sold to the Central Plains during the Han Dynasty, but it was gradually cut off later.

Jiang Feng knew the salt caps in these people's mouths, because there were impurities in the salt caps, so it was not as pure as the salt below.

The question is, why is the salt cap formed by the continuous solidification of the water in the salt lake, the salt cap on the top has more impurities, but the salt on the bottom is purer?What's the point here?If this is clarified, is it possible to filter impurities as His Highness said?How to simulate this environment?

And why the salt produced according to the method given by His Highness does not have as many impurities as those naturally condensed salt caps?

Jiang Feng, who was originally calculating efficiency, couldn't help but fell into thinking again.

When Jiang Feng was thinking, the iron hammer was also struggling. He first exchanged five catties of black flour, which is thick flour directly processed from wheat without removing the bran. It was a luxury to face them before. I can't eat it once during the Chinese New Year.

But now he can exchange 5 catties for a day's work!Enough food for their family for a day!If you add his eldest son's, it means they can save a day's ration for every day they work!Wouldn't it be possible to store a year's worth of food in one year? !Then they will be able to kill a sheep extravagantly during the Chinese New Year!

And in the grain store, Iron Hammer actually saw snow-white flour!White flour without the bran! 2 catties of food stamps can be exchanged for 1 catty!

And salt!There is salt in Chihai, and Iron Hammer knows it, but it is not something they can get their hands on, it used to belong to nobles!But now His Highness has spent a lot of effort to make these salts, but only 5 catties of grain can be exchanged for half a catty of them!

What a gift!

More importantly, after the hammer came here, they discovered that His Highness was not only open to them, but food!They can also exchange for fish, and the fish is also very cheap, one catty of food stamps can be exchanged for one catty of fish!

What's more, at the third shop, Tie Hammer couldn't believe his eyes!iron!That's right!His Highness is actually willing to let them exchange for ironware!

When he saw the ironware, Iron Hammer was stunned, because even an ordinary herdsman in Iron Hammer knew how Datang banned ironware from their countries!Here in the herdsmen, a knife can be a family heirloom!And their hunting arrows are almost all wooden!Hammer's family has a small knife, which was passed down from his grandfather's time!

But over the years, the knife has become smaller and smaller!

And now, His Highness actually asked them to exchange food coupons!Hammer looked at the exchange price of ironware, which is also calculated according to weight. If you exchange for ironware, 1 catty of pig iron can be exchanged for 50 catties of food stamps!

Iron Hammer was moved to tears, a kitchen knife, His Highness's price here is 70 catties of food stamps, which means that he can exchange for a kitchen knife after working for more than two months!This is something that I never even thought about before!In the past, let alone working for two months, he worked for the nobles for a year, and the nobles would not give him an iron kitchen knife!

There is only one iron dagger that has been handed down in their family for three generations, but now it is worn out and almost becomes a small knife.

Iron Hammer couldn't help but think, it is said that the cost of making iron is very high, can His Highness afford it!Give them such low prices.

Lu Hai is also calculating this problem. A blast furnace needs about 80 people to maintain it. Among them, only 20 people in two shifts are enough to operate the blast furnace. The remaining 60 people are used to dig iron ore, coal mines, and transport iron ore. Consumption of coal mines.

The work of about 80 people can supply a blast furnace. The main thing they mine is the rich iron ore in the information given by His Highness. About 1.8 stones of iron ore produce 1 stone of pig iron.

In fact, manpower is mainly consumed during transportation. Coal mines, iron mines, limestone mines, and copper mines have all been selected as far as possible from the information given by His Highness.

Lu Hai is considering whether to give priority to building concrete roads between these mining areas, so that their speed will be faster and less manpower will be required.

Now the amount of iron produced in one furnace is also increasing. On average, a blast furnace produces three furnaces of iron per day, and each person produces about 3 catties of iron per day. If one person works for 100 days and can exchange for one catty of pig iron, the profit is about 10 times.

However, this profit is on Xizhou's side. If it is shipped to Chang'an or other places, this profit will definitely decrease.

Lu Hai was a little confused about how to help His Highness increase profits. I heard that His Highness is going to prepare a dowry for His Highness Changle. The eldest grandson's family seems to be quite rich. I don't know if they can make so much money in a year. lose!

Oh no!Lu Hai suddenly knocked himself on the head, so stupid!How stupid!His Highness's teachings are all lost in my mind!Why should I count shipping costs? !I transport the pig iron from here to places like Longyou Road. Isn't it enough to pay the big buyers the shipping fee according to His Highness's pricing? !Shipping costs 5 Wen for a catty, I will add 10 Wen!

It's so far away, it's reasonable for ironware to be more expensive!What's more, even if I add the transportation fee, it is much cheaper than their own refining!

According to His Highness' teaching, this is called a seller's market!Yes, the shipping fee must be added!Anyway, for the time being, those who buy on a large scale are from aristocratic families, and they are not short of money.

As far as ordinary people are concerned, they only buy one or two pieces, and the price is set by His Highness, and the shipping fee is subsidized to the people!At that time, someone has to tell them, so that these people know that His Highness lost the transportation fee just to sell them ironware at a low price so that they can use good ironware!Just do it!

By the way, when these herdsmen exchanged iron wares, they had to tell them that the iron wares bought by the people in Chang'an City were slightly more expensive than them. In Xizhou, it was His Highness who sympathized with them!