Hearing this, the old man couldn't help but smile and said, "Since Your Excellency's number is so spectrum, you should know what it means to be forty times the standard of ordinary military steel, right?"

"Of course I know, it's quasi-dark steel, and it's worth as much as gold in this world. A ten-pound quasi-Xuangang weapon, 10,000 acres of fertile land will not be replaced. However, if it is only a low-grade dark iron ore for smelting quasi-dark steel, it should not be so expensive at all. One pound of low-grade black iron ore with black iron content should only be forty taels of silver, which is about the cost of a hundred swords of a patrol officer, including a thousand catties of high-grade fine wood and carbon, that is, the cost of fifty taels of silver. How much can you get out of this high-grade iron ore and refined wood charcoal?"

"This is not a rarity. However, your Excellency really plans to use such a valuable thing to practice your craft yourself?"

Zhang Fan is not a person who is accustomed to bargaining in circles: "Of course I don't plan to rob Tiexing's job, just build my own stove to entertain myself." Let's do it this way: 200,000 taels of silver or 200 taels of gold, 4,000 catties of low-grade black iron ore, and 4,000,000 catties of refined wood charcoal, you are responsible for transporting them yourself, and how about hoarding this courtyard in the city that I have already booked?"

When he said this, Zhang Fan didn't care too much about taking out the two hundred taels of gold, that is, the property worth 200,000 taels of silver here, and there was a map bought everywhere in the city, roughly decorating a courtyard in the south of the city that was temporarily selected by the people of the copper store who had just heard about it after he left. Then, Zhang Fan slightly released his internal qi, and a unique three-foot qi wall seemed to be formed in front of him, slightly approaching the old man. The gold, which had a certain amount of gold, suddenly suspended in the air and gradually fell into the old man's hand.

As the saying goes, if people are small, they are light. Dealing with a force with a considerable background in the rivers and lakes like Tiexing, even if it is some big cities, it is obvious that they must show the ability of the early stage of the transformation realm in order to deter these people, so that these people can make a deal according to their expectations without procrastination.

It wasn't until after receiving the golden moment that the old man reacted from the huge shock he had before: Transformation Realm Cultivator?

"Oh... Seniors don't worry! We will do what we say... Not only the old man, but also some other people who saw Zhang Fan show this extraordinary strength were also shocked.

At this time, Zhang Fan sensed with his spiritual power and made sure that these people were indeed intimidated, and they would not leave after any moths.

The people in the copper line don't have much power, but they can make the ghosts grind if they have money. Hundreds of taels of silver were not to buy a house, but to rent for half a year, and the owner of the courtyard immediately agreed to move immediately. Especially this kind of copper bank, which is not a top force, has a decent credit. There should be no defaults.

Zhang Fan weighed it for a moment at this time and didn't care too much about his transformation realm, and began to dig a pit seriously. Soon, a large number of Ding Zhuang of five or six grades from the outer door brought in truckloads of fine wood charcoal one after another. Long convoys dominated many streets, with hundreds of large vehicles commuting to and fro. However, because it is an iron deal, not many people dare to mess with it.

When these convoys arrived, Zhang Fan secretly used methods, and a large cellar had been dug up. This made many people who rushed to feel shocked, especially some masters of the inner door who had some skills, and these people had concepts about many things. I know that this ability is not even possessed by the early stage masters of the Ordinary Transformation Realm.

It took a whole day and night for the convoy to load and unload the goods to make several round-trips, transporting a full 4,000 trips of fine wood charcoal and lower grade black iron ore. Zhang Fan secretly used his spiritual power to conduct some investigations, but did not find too many problems, and most of them were qualified. After that, a large number of bronze artifacts sent by the copper store also arrived, and Zhang Fan also took the opportunity to spread some news: in the next half a year, people who inquired about the news within three zhang around the compound would be killed.

Subsequently, Zhang Fan began to seize all the time to transport many of these refined wood charcoal, copper ware, and low-grade dark iron ore into the pit in a special way. Except for the fact that there is a lot of fine wood and charcoal, there is no big problem with the others. And Zhang Fan is not willing to include too many things in the Qiankun Shield in too short a period of time, otherwise there is still a trace of the fact that the Qiankun Shield may be exposed.

In the Qiankun Shield, Zhang Fan obviously felt that the bronze ware was much easier to process than the super steel, and the difference was at least a hundred times. Based on the scraps of some scrapped super-grade steel god thunder cannons and some carbon ash, Zhang Fan spent about half a month to produce sixty copper god thunder cannons weighing about one ton.

According to some previous combat experience, it is often difficult to inflict heavy damage or even destroy the opponent with one or two attacks when encountering some powerful enemies. Not to mention what to do if there are more strong people than himself, so in terms of divine thunder artillery, Zhang Fan prepared sixty guns at once. In fact, according to Zhang Fan's plan, it is 500 gates, after all, with his own skill cultivation of 29 grades of the outer gate now, he has the ability to unload the Qiankun shield of 800 tons. Of course, the pursuit of combat effectiveness must be maximized, because no one knows what kind of opponent they will face in the future. Now that he has a heavy treasure in his body, he does not have the combat power to do as much as possible, and he may suffer great danger at any time.

The copper cannon with a certain fixed bracket and sleeve did not cost Zhang Fan much energy, but it was completely different when processing the lower grade iron ore. From a certain point of view: if super-grade steel is twice as strong as the strongest steel at the beginning of the 21st century, it is still within the range of steel in the traditional sense. And the quasi-Xuangang smelted from the inferior Xuantie is probably similar to something that is obviously different from the geophysics in "Douluo Continent" to a certain extent. At the beginning, Zhang Fan found that this grade of black iron ore was not only quite the best charcoal, but also the steel smelted could only reach the point of super-grade steel, and could not go further. Zhang Fan began to try to use his unique spiritual power and internal qi to make the lower grade of the dark iron ore smelted in a shape like the pages of a book, and then continued to forge with the exquisite internal qi power, and used ultrasound to control the internal density distribution at any time. In this case, it took Zhang Fan Qiankun about half a year to produce twelve unique long-shaped Shenlei cannon shells weighing about 20 kilograms. It is not surprising that in the mundane world, such things are almost as valuable as gold.

Its aerodynamic shape is undoubtedly a lesson learned from the past. According to Zhang Fan's rough estimate: even if the cannonball with the thunderball warhead that is tested with his current mental power should not be a big problem to withstand the instantaneous wind resistance brought by 100 times the speed of sound. Within a relatively close range of one mile, there should be about six billion joules of kinetic energy. According to Zhang Fan's rough estimate, if the current level of thunder explosion effect is included, there should be the ability to secretly calculate the four or five grade refining body to the Jindan cultivator at a distance of less than one mile. If a swarm attack is used, it may be possible to increase the coverage to a distance of about two miles.

Of course, Zhang Fan also believed: If he faced a master like the Lord of Luoyun Mountain, with his current strength, he would have no chance of winning in a head-to-head confrontation with the Qiankun Shield, and the opponent's range of destroying himself should be far more than two miles, and only in some extremely special circumstances would he have some possibilities for the success of the raid.

The copper cannon has greatly improved the reliability of the Shenlei cannon. According to Zhang Fan's preliminary test: the same weight of the Divine Thunder Cannon, because the resistance of the bronze is about one-sixth of that of super steel, can exert more than six times the power of the same standard. The overdraft limit standard that would be destroyed by firing the cannon in the past nearly doubled the launch energy, and it was also within the range of multiple launches of the Bronze God Thunder Cannon.

In the following two months in the Qiankun Shield, Zhang Fan used some super-grade steel scraps accumulated in the past to make ordinary divine thunder cannon shells, and the goal was only to target the top masters of the second, third and fourth layer realms of the peak of the foundation, and the powerhouses of this level were extremely threatening to themselves, and they had to be able to deal with them at any time.

When carrying out these war preparations, Zhang Fan did not think that there would be too much danger in this deterrent competition in the city. He was not so much that he was targeted by evil people not long after he settled down. It's just that in any case, doing his best to carry out as many as possible and being impeccable in combat preparedness, and to deal with all kinds of risks at any time, is a subconscious habit of Zhang Fan, who is different from ordinary indigenous protagonists and has quite strong rational thinking ability.