When Liu Lan arrived at the workshop, Ou Yejian was instructing several skilled craftsmen to have some skills, because the furnace of this era is small, such as the blower equipment is simple or natural ventilation is used like a mine, the furnace temperature is not high, so if you want to improve the quality of ironware, you can only work on the skills, the first time I saw this qiē Liu Lan had some thoughts in his heart, first he thought of the steel filling method, the steel filling method is very simple, as far as Liu Lan knows, it is nothing more than burning the pig iron out of molten iron, Molten iron is then poured into wrought iron, and after several degrees of 'mating', it becomes steel. ＝＝x＝

Of course, Liu Lan just said a general direction, how to implement it still needs the test of craftsmen, fortunately, with Ou Yejian present, it is not difficult to overcome this technical difficulty, in fact, as far as Liu Lan knows, such a rough steel filling and iron smelting method has probably been invented in the Jin Dynasty, and in the Northern and Southern Dynasties, it has been able to skillfully use the steel filling method to create ordinary farm tools, so it is not as difficult as imagined in terms of technology. That is, repeated quenching to the Three Kingdoms period, gradually using pig iron and wrought iron smelting, and then to the Jin Dynasty to completely make Su iron (the so-called Su iron is the so-called steel filling in later generations), this stage should be the period of technology accumulation and molding of the steel filling method, and Liu Lan's appearance is just to pierce this layer of window paper in advance, so that the ancestors will not take some detours.

Another point is that Liu Lan found that the farmers of this era used a kind of agricultural tool called Mu Yu to turn the soil, and his appearance was like today's shovel, but it was flat and pointed, which was very inconvenient to use, but if it was improved into the form of a shovel in later generations. That will inevitably bring about a seismic shift, so that the originally laborious excavation will greatly improve the timeliness. This is not true for the mine at this time. It is definitely an epoch-making product for the Han Dynasty at this time, as for the grain harvest, I dare not say that after all, this is all dependent on the sky to eat, but it is bound to reduce a large number of labor, so that they can have more time to do some other things, such as the many Qianmo in the mine is not limited by the reason of agricultural tools can not be cultivated, if the cultivated land of the mine can be doubled, then the grain and grass crisis that the mine has been subject to will be solved because of the emergence of shovels, not only that, but then there will be spare money to buy ploughing oxen to plow the land. This is definitely the rhythm of the well-off.

Thinking of this, Liu Lan finally showed a happy smile.

"Sima, what are you?"

The people who came with him suddenly found that Liu Lan could laugh out loud when he stared at Ou Yejian, and they couldn't help but be a little inexplicable, but soon everyone understood why Sima laughed, but the shovel depicted in Sima's mouth can really be stronger than Mu Yun, and it is worse than the earth?

"Well, if you don't believe it, well, when the shovel I am talking about comes out, you will know that a man's digging shovel may be no worse than the ploughshare."

Sima's high-spirited words did not fill the crowd with beautiful expectations for the future, but one by one's brows furrowed. It is also Liu Lan who is saying these things now, which is like saying to them that there is nothing on the moon, and he also swears that he will be regarded as a madman in this era, but if he turns it upside down and swears that there is Chang'e on the moon and the moon rabbit, it is not the same. So Liu Lan decided to speak with the facts, of course, the premise is that the craftsmen perfectly build it according to his requirements.

"I'll shut you up when the shovel comes out." Liu Lan was in a good mood, staring at the crowd and said narrowly. He was looking forward to the expressions of a few people who were deflated and worshiped like gods, and he must have been very happy at that time.

Liu Lan immediately drew the figure on the floor of the workshop. I have to say that Ouyejian is definitely an authority in the industry, but after asking about the principle of use in detail, he kept nodding and saying that although the shovel seems to consume more iron. The shovel head is twice as large as the tip of the wooden one, but it is more convenient than the wooden one, especially the shovel is more stressed than the wooden stick that the wooden one steps on horizontally, which will greatly improve the efficiency. Laymen and authorities will be treated differently if they say the same thing, but Liu Lan did not take it seriously in this matter.

However, a few blind people have eyes and don't know gold and jade, but Ou Yejian, a real expert, did not let go of the details in front of him, Sima will never be like Xiaobai, who has no research on iron tools on the outside, otherwise what is the matter with the dragon slayer knife and shovel? This can't help but make him suspicious, if it's just a blade after all, it's a general who has been fighting on the battlefield all year round, and it's not a problem to build a blade that can take advantage of it, then how can it be random to suddenly figure out such a farm tool?

You must know that if this shovel is successfully produced and can be mass-produced, its profit will exceed the profit brought by any agricultural tool in the workshop, it is conceivable that with this shovel alone will inevitably make the mine make a lot of money, and this is not to mention Sima's bold steel filling method, if it can really create that kind of steel, there is no doubt how sharp the weapons made by the mine will be in the future.

Ou Yejian didn't dare to continue to think about it, you must know that Liu Lan's two ideas alone surpassed his Ou Yejia's thousands of years of inheritance, he didn't believe that a person's intelligence had reached such a level, and he specialized in the art industry, as far as he knew, Sima was a complete layman for iron smelting, so to be able to have such a sharp point, either Sima was an unborn talent, or Sima had received guidance from a hidden master.

Talented? He believes it, and he doesn't believe it, after all, the guidance of the hidden master is more suspenseful, but he can't ask rashly about this matter, if it is really the latter, he will definitely not say that he will even raise his vigilance, if it is the former, then Ou Yejian has to consider that there is such a great talent, should he stay for more time, you must know that refining weapons and enlightenment are the same, following such a great talent, not to mention how much he can help, but just like today, revealing a trace of mystery will make him infinitely useful.

Now the biggest problem that plagues him is that the method of refining has matured, if improving the quality of iron is his top problem, he has not tried the method of filling steel, but repeated failures have made him no longer have the slightest confidence, and now he has Liu Lan's guidance, and now he can't get rid of it even if he is in a hurry.

Because he knew that by Liu Lan's side, his iron-smelting skills would be greatly improved, and he would become a well-known master in the world like his ancestor Ou Yezi. (To be continued......)