You must know that Ou Yezi's strength was improved from the Saint King Seventh Heaven to the Emperor Triple Heaven after Lu Feng broke through to the Emperor Realm.

But the crossbow arrows of the Holy Exterminating Crossbow asked an Emperor Triple Heaven martial artist to carve the lines on it, and it was even possible to carve only a hundred in a day.

And a hundred Holy Exterminating Crossbows, for millions of troops to fight, the effect is basically negligible.

Lu Feng didn't expect that the difficulty of making this bow and crossbow would be so great!

It is no wonder that even if the Cangchu Dynasty had such a big killing weapon, it did not choose to expand its territory with it, it turned out that this crossbow arrow was too difficult to make.

Moreover, this is just an ordinary Saint Exterminating Crossbow Arrow, if it is a special crossbow arrow for the Saint Venerable powerhouse, the difficulty will definitely be even greater.

With the current Nanyan Kingdom, it is estimated that it may not be able to be produced.

After a little hesitation, Lu Feng looked at Ou Yezi and asked, "Isn't it possible to make a mold first, and then melt the refined iron stone into molten iron and inject it into the mold, so that the carved lines on it can be formed independently?"

"I've thought about it, but I can't do it. ”

Ou Yezi smiled bitterly: "The lines on the carved crossbow arrow will have huge energy fluctuations, and this energy fluctuation mold can't withstand it at all, so this method can't work." ”

"Does that mean that as long as the mold can withstand energy fluctuations, this method can be successful?" Lu Feng's eyes lit up and he immediately asked.

"This ......"

Ou Yezi thought for a while and said, "It stands to reason that it should be fine, but it is too difficult to make an ordinary mold have the hardness to withstand this kind of energy fluctuation, even if it is to arrange the formation, it is useless." ”

"The formation is definitely useful, but it depends on what the formation is. ”

With a hint of a smile on his face, Lu Feng said, "Let me try, maybe I can succeed." ”

Ou Yezi still smiled bitterly, shook his head, and said, "Your Majesty, the minister understands your plan and wants to use the Xuan Array to enhance the hardness of the mold.

But the probability of success in this way is too small, because the kind of energy fluctuation that carves the pattern of the crossbow arrow must be introduced by True Qi. ”

"Even if your formation is formed, but without True Qi as an introduction, you won't be able to make the lines carved on the crossbow arrows useful, so ......"

Frowning slightly, Lu Feng didn't expect that there were still requirements.

But after thinking about it, he still said: "This is the only way at the moment, and it must be tried." ”

"Obey. ”

Ou Yezi understood Lu Feng's thoughts, and immediately responded, taking Lu Feng to the place where the crossbow arrows were made.

Soon, Ou Yezi took Lu Feng to the place where crossbow arrows were made.

The four walls here are carved with formations to ensure that there will be no accidents.

Lu Feng saw that there were already a lot of Saint-Destroying Crossbow Arrows around, and now there were many refiners carving the lines on the crossbow arrows.

The speed is as Ou Yezi said, very slow.

When these refiners saw Lu Feng, they saluted in unison: "Long live my emperor, long live, long live." ”

"Flat. ”

"Wait for the first retreat. ”

"The ministers obeyed. ”

Everyone immediately listened to Lu Feng's order and quickly left here.

"Your Majesty, the fine iron stone used to make the Holy Exterminating Crossbow Arrow only needs the most ordinary fine iron stone, so I use the thousand-year-old fine iron stone to make the mold. ”

Ou Yezi took out a mold from the side and handed it to Lu Feng, the mold was carved with lines, and it only needed to melt ordinary fine iron stone into molten iron and pour it into it, which could form a perfect crossbow arrow.

But this is an imaginary scenario, and this place simply can't do it.

Ou Yezi pointed to the other side, where there were many broken molds, he sighed lightly, and said, "That is, I planned to use this to make a failed and damaged mold, and I can't withstand the energy generated by the crossbow arrow after it is formed." ”

Lu Feng didn't answer, but looked at the lines on the mold carefully, and said after a while: "This pattern is the formation pattern, it seems that the person who made the Holy Extermination Crossbow at the beginning is a genius, using the hardness of the refined iron stone to make crossbow arrows, carving the formation, and then using the huge energy generated by the Holy Exterminating Crossbow to urge the formation on the crossbow arrows, it can cause huge lethality." ”

"Exactly. ”

Ou Yezi said: "The minister also discovered this, so carving the lines on each crossbow arrow is equivalent to carving a formation, which is why it is so difficult to make." ”

"If that's the case, that is, as long as the mold can withstand the energy impact generated when the bolt is formed. ”

Lu Feng's eyes moved slightly, and he said, "Let me try it." ”

"Condensation!"

With a low shout, Lu Feng quickly typed out three Xuanwen with both hands and landed on the mold in his hand.

"Buzz!"

There was a buzzing sound from the mold, and a wave visible to the naked eye flowed out, and finally merged on the mold.

"The hardness has really increased a lot. ”

Ou Yezi felt the change in the mold at once, but after a little groaning, he said: "But this can't let the martial artist's true qi be embedded in it, and it can't let the true qi be used as the introduction for the formation of the lines on the crossbow arrow, and the crossbow arrow can't be successfully made." ”

"Don't worry, you can first test whether this hardness mold can withstand the energy impact of the crossbow arrow molding. Lu Feng said to Ou Yezi.

"Obey. ”

Ou Yezi immediately took the mold and began to make crossbow arrows.

After a while, he poured molten iron into the mold.

Soon, the molten iron gradually solidified, forming the shape of a crossbow arrow, and the lines on it were also clearly visible.

But it was missing the true qi as an introduction, Ou Yezi looked at Lu Feng, and when he was about to speak, Lu Feng's hand moved, and another Xuanwen appeared in the void, and said, "Infuse your true qi into this Xuanwen." ”

"Yes!"

Ou Yezi immediately followed what Lu Feng said and poured himself into the Xuanwen.

"Go!"

Lu Feng controlled this Xuanwen and quickly fell, landing on the crossbow arrow in the mold.

"Buzz!"

A loud buzzing sound came from inside the mold, and a huge energy from the crossbow arrow began to hit the mold.

But at this moment, a fluorescence circulated on the mold, completely blocking this energy.

"Click. ”

After a slight thud, a crossbow bolt fell from the mold and fell to the ground with a 'ding'.

"It worked!"

When Ou Yezi saw this crossbow arrow, he immediately saw that this crossbow arrow was exactly the same as the one he had made before, and it was far faster than before.

He took the crossbow arrow and looked at it, and said, "Your Majesty, this method of yours is indeed useful, but ......"

Looking at Lu Feng, Ou Yezi said: "In this way, you need to perform Xuanwen every time Your Majesty, this is ......"

The words were not finished, but Ou Yezi's meaning was obvious.

Lu Feng was not a refiner of the Southern Yan Kingdom, but the emperor of the Southern Yan Kingdom, and it was impossible for him to stay here and let him make a Xuanwen every time he made a crossbow arrow.

It's impossible.

There are so many things in the kingdom that need to be dealt with by Lu Feng, not to mention that there may be a big war on the front line at any time, and it is impossible for Lu Feng to stay here to make crossbow arrows.

(End of chapter)