The government's monopoly and control of the steel industry is for several factors.

First, it is to increase fiscal revenue; Second, it is to control the circulation of weapons and reduce the occurrence of riots.

Now, natural disasters are repeated, thieves are everywhere, and the court situation is also obscure, resulting in the government's control of this area has been relaxed, so some wild blacksmith shops are lined up, but because the imperial court still has some control over this, so the wild shop business is not very good.

Since Liu Jing intends to contribute to the state and county, and also mentioned this aspect, Zhang Song is also willing to help him with this, he thought for a while, and suddenly seemed to remember something, so he smiled at Liu Jing and said: "If Liu Gong intends to do this, Ziqiao is also willing to help Liu Gong, go back and I will draft the paperwork, give you a proper name, and let you open a blacksmith shop in the name of the government."

Speaking of which, it just so happens that I also know a good craftsman here, I can recommend it to you, this person's name is Pu Yuan, he is smart and dexterous, good at pondering, and he is quite a statement in the wrought iron industry, he can help you! ”

Liu Jing was very happy after hearing this, and secretly said that this Zhang Song is really decisive enough, in order to open a good shop for himself, he not only gave his official family a license, but also recommended a skilled craftsman for himself, which is a big face.

Liu Jing immediately stood up and said gratefully to Zhang Song: "Thanks to Master Zhang's kindness, Liu Jing will definitely work hard, do his best to lay a good foundation, and strive to recruit Xiangyong as soon as possible, so as to calm the surrounding bandits for the state and county, and restore peace to the people of Zhuo County!" ”

Zhang Song also nodded with satisfaction, and after talking with Liu Jing for a while, he got up to say goodbye.

Liu Jing's restaurant reopened, and the business began to fire again, in order to lay out in an all-round way, Liu Jing opened several shops one after another, to speed up the accumulation of funds, including the blacksmith shop.

In the past month, it is strange to say, Xu Wen has not come to Liu Jing's stubble since the incident in the restaurant, since Xu Wen did not come to stir up the matter, Liu Jing has no need to find trouble in his heart, and he has ******** taken care of the business matters.

Because Liu Jing is a smart and experienced businessman, coupled with the support of Liu Zhang and Zhang Song behind him, it is also smooth sailing to do business, and in just one month, he has made a name for himself in Nancheng.

And because of the confrontation between Liu Jing and Xu Wen at the beginning, others have seen Liu Jing's iron backbone, and their impression of him has also improved greatly, plus Liu Jing is free and easy, generous, and often helps some difficult businessmen, so in the Zhuojun business community, Liu Jing has won the favor of many businessmen.

Since the matter of the restaurant was resolved, Liu Jing accepted Zhang Song's suggestion and bought another mansion in Beicheng.

First, it is for safety, because Beicheng belongs to the Zou family's sphere of influence, and most of the official government is in Beicheng, and the public security is better; Second, it is also for the convenience of communication, once Liu Jing has something, he can also find Zhang Song quickly.

This month, Liu Jing basically didn't go to the restaurant, most of the time he was busy with other businesses, of course, Liu Jing also took more time to go to the blacksmith shop from time to time to communicate with Na Pu Yuan.

Through the exchange with Pu Yuan, Liu Jing also understood a lot, not to mention, this Pu Yuan recommended by Zhang Song is really a capable person, and his views on sword smelting are very unique, and the swords he made are much sharper than those made by ordinary people.

Liu Jing learned from Pu Yuan's mouth that the most important thing in the smelting technology of this sword is quenching and tempering, and the control of tempering is generally not much different, and the key point that can distinguish the depth of a blacksmith's kung fu is the quenching technology.

After his own personal experiments, Pu Yuan came up with different water as the cooling medium for quenching, knives with different properties can be obtained, soft water is not suitable for quenching, hard water is the best choice for quenching.

On this day, Liu Jing was discussing with Pu Yuan how to improve the quenching medium.

Liu Jing was a high-achieving student, and when he was a student in the Huaxia Dynasty, chemistry class explained many natural phenomena and material compositions. Of course, Liu Jing knows the difference between soft water and hard water, although Pu Yuan has gained experience through personal experiments, but he does not know the essential difference between soft water and hard water.

In fact, Liu Jing understands that this hard water looks at the content of salts dissolved in the water, that is, the content of calcium salt and magnesium salt. The hardness of the content is large, and the hardness is small.

Salt? Thinking of this, Liu Jing's mind suddenly boomed like an explosion.

In the Han Dynasty, the use of salt was not very developed, and the common people only ate simple coarse salt, which could not be coarse, just like jaggery.

Of course, private salt was still allowed to be sold privately in the society of the Eastern Han Dynasty, and the policy implemented by the government was a tax system, and salt sales had to pay a higher tax to the imperial court.

Of course, speaking of which, Liu Jing will not go specifically to purify the coarse salt, and then let Pu Yuan use the brine to quench the medium, because in this case, the cost will be too expensive.

Liu Jing thought that he could use Zhang Song to get a license to sell illicit salt, and then find a way to purify the coarse salt and sell it at a good price, in that case, he would grab his wealth faster. This idea made Liu Jing a little excited, and he was ready to say goodbye to Pu Yuan and go to Zhang Song to do the business of selling illicit salt.

Now Liu Jing wants to help Pu Yuan find a new medium first, what kind of medium has more salt? He thought about it, and even thought of the urine of people or animals, of course, whether it would work or not, he had to let Pu Yuan try.

Liu Jing was embarrassed to make a simple exchange with Pu Yuan, who knew that Pu Yuan was very surprised when he heard it, and said bluntly: "Liu Gong is really a whimsical idea, he actually thought of urine, this can be tried, but I think, since animal urine can be tried, then animal fat can also be tried at the same time!" "That's the beginning of preparation.

Liu Jing was very happy to see Pu Yuan like a person who had won a treasure, and he was very happy, and said approvingly: "If Yuan draws inferences from one another, and has a strong executive power, it is really a godsend to me, although you try your best, make me a better knife, what I will give you what is missing, you don't have to worry!" ”

Pu Yuan is a person who has the ability to act and think simultaneously, he thinks about it, he has successively experimented with several kinds of urine as a quenching medium, and through Liu Jing's inspiration, he even used the grease of the face animal.

After Liu Jing came out of Pu Yuan, he went to other places and bought a good inkstone for Zhang Song as a meeting gift, and after coming back, he took Tang Zhou to buy some tools for purifying coarse salt, and then started the work of purifying coarse salt at home.