As Ji Zihe finished saying this, a countertop made of earth elements rose on the ground, and this countertop became a special desktop in Ji Zihe's requirements.

"Before I make this thing, let me explain it briefly."

Ji Zihe took out all kinds of tools and put them in a specific place on the table.

"The power generated by the various levels of explosive bombs does not change depending on the size of the core. In other words, an entire Rank 5 Core and a Grade 5 Core fragment the size of a fingernail are the same in terms of final explosion power. ”

Then Ji Zihe took out Lao Jin's hands and took over a large number of first-level cores.

"And there are several difficulties in the production process. The first is the cutting core, the core of the elemental beast, after it is cut, the power contained in it will gradually be lost. ”

Then Ji Zihe casually picked up a core and shook it in front of the two.

"First, the difference between the core of an elemental beast and a human soul is that the core can store power. Coupled with the extraordinary output power of the high-level core, the core itself is a relatively fragile thing. The first problem is the difficulty of dividing the core, which can lead to an explosion if you are not careful. ”

Then Ji Zihe took out a blue-white knife, like pressing into tofu, and cut the core in half.

"Therefore, the cutting core requires a special knife, a knife made of lapis gold and the crystal slag of the Broken Soul Crystal. The theory is relatively cumbersome to explain to you right now. ”

Then Ji Zihe divided five by two to cut an egg-sized fire core to the size of a fingernail, and then cut one for each of the three earth feng shui cores.

"There is one more thing to do in the first step of cutting, which is to scrape the skin. Scrape off a layer of elemental film on the outer layer of the core. ”

Then Ji Zihe was like peeling an apple, carefully scraping the layers of elemental film.

"The second problem is to hold the core thing, and the material itself must have a strong elemental adaptability to the elements. So the material I chose was the fruit of the earth. ”

While explaining Ji Zihe, he dug four pits on the two halves of the Earth Fruit.

"And, there are a couple of options available here. Due to its excellent elemental adaptability, the Fruit of the Earth will not explode immediately. A newly developed earth fruit like this, adapted to the upper level of the core, takes about three minutes from its creation to explosion. ”

Hongyu and Lao Jin recorded carefully, for fear of missing a word.

"The waiting time for a fist-sized Earth Fruit shell is about five minutes, and for a head-sized Earth Fruit, the waiting time is about ten minutes."

"Question..."

Hongyu immediately spoke, but before she could speak, she was interrupted by Ji Zihe.

"You want to ask how long it will take to wait if an egg-sized Earth Fruit is paired with a fifth-level core, I can tell you this question, because of my own financial limitations, this is a very detailed question, I haven't carefully calculated it."

Hearing Ji Zihe's answer like this, there was no surprise in Hongyu's expression.

"This third question, if Lao Jin has time, he can explore it by himself. But don't use a level 6 core. ”

Listening to Ji Zihe's careful advice, Lao Jin nodded.

"And different materials will have different waiting times. What kind of material you can find depends on your own ability. Because of the convenience of the Fruit of the Earth, I have always used the Fruit of the Earth as the core material for blooming. ”

Ji Zihe said while thinking, and every sentence was carefully considered before he spoke.

"The fourth problem is to make holes. This is the last question, and the most difficult to grasp. ”

Speaking of this, Ji Zihe's voice became extremely serious.

"So, my personal usual practice is to add a material called superconducting toner to the inside of the fruit of the earth, and the peculiarity of superconducting toner is that it only reacts to the elemental power used by humans. Come and see. ”

Then, under the gaze of the two, Ji Zihe controlled the superconducting toner rolled up by the wind element, forming a wind line as thin as a hair, drilling one small hole after another on the fruit of the earth.

And these small holes stopped just as they were about to pierce the fruit of the earth and open the grooves.

After this step was completed, Ji Zihe picked up the cut four core fragments and stuck them in the grooves of the Earth Fruit one by one.

Then Ji Zihe picked up the shell of the other half of the Earth Fruit and concocted the other half.

"And this last problem is that two materials are needed, one is the resin of the incense tree, and the other is the rust of the binding iron. I'm going to show you how. ”

When Ji Zihe evenly spread the resin on the cross-section of the two halves of the Earth Fruit, and then densely sprinkled a layer of rust that bound Yuan Iron.

Then Ji Zihe combined the fruits of the earth.

Ji Zihe put this thing on the table, looked at the two of them and said, "Do you have any questions to ask?" If I had known, I would have told you. ”

"Do you have to use all four series?"

"It's not that the four systems are used, but at least there must be two systems, and the conflict is more obvious. The reason why I used the four series just now is because there are many materials. Of course, you can also use one of the series, but this kind of thing is just a surprise. It's not powerful enough, and it doesn't do much. ”

"Are there any other replacement materials?"

"If you can find it, you can replace it. This bomb itself is also an idea of mine. And the more you go on, the more difficult it is to use, and you should be clear about why. ”

"Why do you have to put the halves together?"

"It's just my personal habit, if you can find a better solution, you can also do it."

Then Lao Jin and Ji Zihe began to ask and answer very seriously. And Hongyu, who was on the side, also nodded her head from time to time in agreement.

In this way, the two began to ask and answer questions very quickly, and time passed rapidly.

"The black dots on the explosive bomb are the ink needles formed by the superconducting toner inside the fruit of the earth under the condensation of the wind element."

Ji Zihe stood up, picked up the explosive yuan bomb that had been made just now, and cut it again. Displayed in front of the two.

"When activated, the superconducting toner creates a rather powerful force that penetrates the film, the core, and the net of rust. The elements of fire and water will explode under the sudden impact. ”

After Ji Zihe finished displaying, he held the explosive yuan bomb in his hand and threw it lightly a few times.

"Look."

Then Ji Zihe injected the wind element, and then threw it out suddenly.

'Boom'.

There was a loud bang, echoing through the huge underground space.

"This is the Bomb."