Lu Fan did not directly refine the flying machine, but first refined a few wind and fire type guns, as well as a water-type rune shield and a mountain-type rune shield, speaking of which, he had not engraved the rune for several months, but because of the unique rune combat method he invented, it did not make him unfamiliar with the inscription rune, but improved a lot.

Later, Lu Fan also made a few self-modified guns, and then began to make flying machines, although flying machines could not increase combat effectiveness, but if Bai Zhi had flying machines before, it would not be so difficult for them to escape.

Although it has been a long time since he has engraved runes, Lu Fan's research on aircraft runes has never been left behind, because of the deepening of his understanding of runes, Lu Fan is very confident in this.

He is also full of expectations for this so-called flying machine, because the popular professional-grade aircraft that can be repaired and used in the Federation is actually the product of the combination of technology and runes, and it relies on airflow to fly.

Through the study of the aircraft provided by the system, Lu Fan found that this kind of aircraft actually flies by energy rules, just like Chen Ao, he did not use the aircraft, but he was still able to fly, that is because he is a wind system ability, and he can make the wind fly with him, and the aircraft provided by the system uses this principle.

Moreover, the energy rule of this kind of flying machine is the wind, and those who are not wind can also resist the wind, which makes Lu Fan feel a little excited.

And because this kind of aircraft is the use of energy rules, the energy consumption is also much lower than that of the Federation aircraft, and the speed is much faster, which is not to say that the technology cannot achieve the effect of the rune technology, but with the current level of science and technology of the Federation, it cannot be reached.

Standing in front of the workbench, holding his breath and concentrating, recalling the rune patterns of the aircraft in his mind, and making sure that all the details were taken into account, Lu Fan picked up the rune carving knife, and his whole person also entered a state of extreme concentration.

Dropping the knife and mobilizing energy, Lu Fan carefully carved every line even the slightest line, everything went smoothly, Lu Fan's rune battle method was indeed of great help to him to understand the rune.

Two hours later, the runes of the entire aircraft were almost inscribed, and at this time, the runes made a soft noise and shattered directly on the workbench.

Lu Fan looked at the broken rune module in amazement, this was different from every previous failure, the previous inscription failed, at least Lu Fan had some preparation in his heart, or the inscription was wrong, or the energy was not well controlled......

But this time, everything was perfect, but why did it fail?

For this result, Lu Fan not only didn't believe it, but also a little unconvinced, after he adjusted it a little, he began to engrave the runes again, with the full support of the little fat man, he didn't have to worry about the lack of materials.

As before, everything went smoothly from the first stroke, and when it came to the place where the last time it failed, Lu Fan deliberately controlled it carefully, trying to make everything perfect.

However, the runes still snapped up......

Looking at the two pieces of rune material that jumped, Lu Fan was silent, if it was a failure once, he could still explain it by accident, but both times failed in the same place, letting him know that he must have ignored something.

After carefully studying the runes, Lu Fan soon discovered that the runes that made him fail were the core part of the aircraft runes, that is, the part of the wind system energy envoy.

However, he obviously followed the system tutorial, and he obviously noticed every detail, but why did he still fail?

Lu Fan, who had been thinking hard for a long time to no avail, finally gave up continuing to entangle, but instead began to make hemostatic agents, Huiyuan Pills, Bone Shaping Pills, and Muscle Building Pills, these pills can not only be auctioned for the little fat man, but he can also use them himself.

He was not afraid that these things would be a threat to him after they were circulated, because, with his combat power, even if those entry-level cultivators had the Quenching Bone Pill, they could not be his opponents, and his vision was in a higher place.

As for the rune weapon, even if it was his improved rune fist gauntlet, it was not of much use in the hands of others, but not everyone had such a powerful perception as him, and not everyone knew how to use it.

What's more, the most powerful thing he has now is not the improved runic fist gloves, so he didn't hesitate to put these things up for auction.

A month is not a long time, it is not a short time, it has only been three days since the auction began, and Lu Fan, who has been closed, has not felt how crowded the base is in just one month, when the population has doubled.

In the past month, Little Fat Man and Qiu Ying have also come to see him from time to time, but there is still no news about Bai Zhi's whereabouts.

Even if it was the worst news, there was no news that Bai Zhi was captured by the Chen family, which made Lu Fan even more anxious.

Bang......

After smashing a rune module again, Lu Fan threw the materials on the workbench everywhere with some irritability, and it took a full two quarters of an hour before he slowly calmed down.

Although he also knew that some things were not in a hurry, but after so much time, Bai Zhi had no news, and the runes of the flying machine had not improved at all, how could he not be in a hurry.

Sitting down cross-legged on the spot, and after his mood calmed down, Lu Fan took out a Quenching Bone Pill and began to cultivate, these days he has completed the tempering of the 35th spine, and is refining the 36th spine, he has a hunch that after refining the 36th spine, there will inevitably be changes.

At this time, only this expectation in his heart can calm him down.

ClickClick......

With the operation of the exercises, the sound of striking iron sounded in Lu Fan's body again, and under the dual effect of the medicinal power and free energy of the Quenching Bone Pill, the 36th spine, which had been tempered for a long time, finally began to emit a faint golden light, and then slowly dazzled.

Then, the 35 spines that had been tempered before that had been quenched before also emitted the same dazzling light at this time, enveloping Lu Fan's entire person in a dazzling golden light.

And the surrounding energy, like a meteorite outside the black hole, was inhaled into Lu Fan's body domineeringly, and it actually began to start from the first spine and refine Lu Fan's spine again.

This time, several hours have passed before this energy storm has stopped, and the situation here has already attracted the attention of the people in the entire base, if it weren't for the Zhang family's territory, I'm afraid someone would have come to investigate.

And at this time, Lu Fan finally opened his eyes, he had just stood up, and he actually stepped on the floor of the laboratory, and Lu Fan was obviously a little uncomfortable with the sudden increase in strength.

But this did not affect Lu Fan's ecstasy of breaking through to the three-star entry-level in the slightest, although the energy that he couldn't control was not his own, but with his perception, as long as it took a few days, he would be able to fully adapt to it, and the explosion of strength made him unhappy.