I didn''t stay in the foreign world much.

    After understanding the current situation, Jiang Fan returned to his own world.

    Because the equipment and weapon upgrades mentioned with Chen ang need to be handled as soon as possible.

    Since we do not intend to continue to carry hot weapons to other worlds, the most direct way to improve the combat effectiveness of our army is to improve the forging materials of weapons and armor.

    The current weapons and equipment in the foreign world are basically iron, and even some bronzes are mixed.

    Even iron weapons are difficult to cover all soldiers.

    Of course, weapons will provide iron as much as possible, but armor... Most of them are fooled carelessly.

    The extremely low productivity makes the mining of foreign mineral resources very primitive.

    The annual ore output simply cannot support large-scale standard equipment. Therefore, if every soldier can wear real armor, the improvement of the army''s combat effectiveness will be immeasurable.

    Soldiers with qualified armor will become more desperate. Once all soldiers can be fearless of death, the whole army will have the momentum to destroy everything.

    Of course, Jiang Fan did not intend to provide his soldiers with iron armor.

    It is not only because the plasticity of iron itself is too poor, but also its ductility is almost zero, which is very easy to damage. The main reason is that iron is too heavy

    If you make a full body armor that can protect the key position and then hang it on your body, ordinary soldiers, let alone fighting, may be directly tired before they take a few steps.

    So Jiang Fan''s idea is to make armor in his own world and then ship it to the other world in batches.

    As for weapons... Even cold weapons, if you look for factories to make them on a large scale, I''m afraid there will still be a lot of trouble.

    Instead of making steel in their own world, it''s better to teach the Lin family the local method of blast furnace steelmaking, so that the Lin family can arrange people to directly produce steel materials in other worlds, and then use the refined steel materials to make weapons.

    Since the armor is made in its own world, the choice of materials is much richer.

    Jiang Fan''s initial idea is to find a titanium alloy processing factory, and then find a designer to specially design a standard ancient full body armor, which will be produced by the factory.

    Titanium alloy has better strength and ductility than steel, but its weight is much lighter than steel.

    Therefore, the armor forged with titanium alloy can almost meet the needs of war.

    Although titanium alloy also has a certain weight, considering that in this world, ordinary soldiers in their own country''s army are required to be able to complete a five kilometer cross-country trek with a weight of 20 kg. In that case, the weight of titanium alloy should not have a great impact on soldiers in other worlds.

    Sacrificing some endurance and mobility, the benefit is almost invincible defense in the alien world.

    Such a deal is certainly cost-effective.

    Thinking about these things, Jiang Fan called Jian Jiayi and asked her to find a professional armor designer to design two standard armor.

    One is for infantry, and the other, of course, is for cavalry.

    But Jiang Fan''s request was so wonderful in Jian Jiayi''s opinion that after Jian Jiayi repeatedly confirmed with Jiang Fan, she agreed in a strange voice.

    There must be no one in the world who really makes a living by designing armor.

    But there is no lack of fans and even addicts in relevant aspects.

    With the strength of the Jane family, it is not difficult to find such a person.

    Considering the principle of not bothering the two masters, Jiang Fan simply handed over the task of finding a titanium alloy factory to process and mass produce armor to Jian Jiayi.

    Although it''s not clear what the hell Jiang fan is up to, since it''s Jiang Fan''s account, Jian Jiayi will try her best to do it after all.

    After hanging up Jane Jiayi''s phone, Jiang Fan no longer worried about armor, but searched the Internet for relevant knowledge about blast furnace steelmaking.

    After all in my mind, I went to the other world again.

    It is really not difficult. With the current development level of the times, it can easily support the needs of blast furnace steelmaking.

    Because steelmaking is not high-end.

    In the era of the great leap forward, in order to achieve the political task of catching up with and surpassing Europe and America, the whole country did not know how many simple blast furnaces had been built.

    Even the most ordinary farmers in the countryside can build their own steelmaking facilities.

    Although most of the steel refined in this way can not reach the qualification index of the world standard, steel is steel after all, which must be much better than iron.

    Jiang fan doesn''t need his own army to exceed much in weapons.

    On the premise of ensuring their own security, weapons as long as they are sharper and more tenacious than the enemy''s are enough.

    The scrap produced by blast furnace is enough to meet this small requirement.

    Out of the wing room, Jiang Fan directly called a member of the Lin family, and then explained the corresponding methods and key points of blast furnace steelmaking to the member of the Lin family in detail.

    After speaking, Jiang Fan patted the Lin family on the shoulder and said, "from today on, you will be the special envoy for steelmaking. In the future, you will be responsible for the steelmaking affairs of the family. I hope you will carry forward the spirit of being solid and willing to work, bear hardships and stand hard, keep improving, and make real good steel for the family."

    The Lin family member nodded foolishly and agreed.

    In fact, he didn''t understand what steel was, but what Jiang Fan gave him was detailed enough anyway.

    Just follow the steps written above.

    As for the required materials, they can also be found in Heyang city.

    According to the current status of the Lin family in Heyang City, anyone in Heyang city can be expropriated at will.

    Of course, the money still has to be paid.

    Anyway, the money paid will eventually be put into the market of Heyang city. After transformation, it will eventually flow back into Qian''s Bank.

    The Lin family is extremely efficient.

    There were no technical difficulties in the construction of the earth blast furnace. By the afternoon, the first earth blast furnace had been built.

    Then Lin Wanru, Chen ang and Lin Wanqing, who didn''t know where to return, accompanied Jiang Fan and witnessed the birth of the first batch of steel in the world.

    The cooled steel can only be said to be unsatisfactory. It can''t be compared with the steel in its own world, but it''s really much better than iron.

    After trying the strength of steel, Chen ang was quite surprised. As a pragmatic old man, he knew too well what significance the strength improvement of this material could bring.

    Therefore, without any hesitation, the decree of forging new weapons with steel was directly issued to the whole county of Handong.