Being asked by Shidong like this, Yuan Tian was even more sure that what he had encountered was a demon cultivator. He didn't understand why the demon cultivator didn't attack him, could it be because of kindness? This was obviously impossible, he must have been stumped by something more urgent.

Shidong listened to Yuan Tian's story about what happened on the main peak of Tianyuan Mountain, including the black shadow on the road just now, and he already understood seven or eight points in his heart. The purple half-sheep man and the black half-eagle man should be the commanders of this monster attack. But I don't know what the road is for, they are so eager to appear. In the long run, it takes a long time for the demon beast herd to impact before the commander appears.

Could it be that there is a higher commander behind the scenes? This thought flashed in Shidong's head, and it was impossible and impossible. That Black Feather Man was already a cultivator in the Transformation Period, if there was a higher-level commander again, then this time not only would the Tianyuan Sword Sect not be protected, but even the market side would be dangerous.

Yuan Tian didn't have much time to use for greetings, and he came to Shidong because he was in a hurry. Steward Wang ran out of materials, and Yuan Tian continued to find another batch of materials to use to make the spirit crossbow. The crossbow he wanted to make this time was not a chain crossbow, let alone a multi-arrow chain crossbow. It is a crossbow that can only fire one arrow at a time, and cannot be fired in a chain. Don't look at the function of this crossbow is so simple, but it has high requirements for materials.

Shidong is the person who supports Yuantian to make the most, and without saying a word, he led him to the Qiqiao Pavilion. The defensive line is safe for the time being, and there shouldn't be any major problems with Na Laqianyan. The thing that Yuantian needs most is naturally the spirit stone card slot. As for the crossbow body, the material needed should not only be strong but also flexible, preferably the kind that will not break no matter how ravaged it is. Because once his design was successful, the force at launch was too great. A normal crossbow can't withstand it at all, and it has to collapse before the bolt can be fired.

Sixteen Spiral Acceleration Crossbows! Shidong also felt very powerful when he heard this name, but he couldn't understand how Yuan Tian made the energy of the sixteen spiritual power card slots turn into a driving force and act on the same crossbow arrow.

What he didn't understand even more was why he had to go through a spiral of acceleration. Could it be that after the crossbow bolt spirals, it won't go off the track and deviate? Of course, this kind of knowledge from the other world Shidong can't figure it out, but he believes that Yuantian must have a reason to do this. Since Brother Yuan wants to try boldly, the elder brother must support it vigorously.

Yuan Tiandu was already a member of the Penglai Immortal Alliance's manufacturing group, and the Tangram Pavilion was naturally fully open to him. Not only is Zuiyue Tower the property of Penglai Xianmeng, but Qiqiao Pavilion is also one of the properties of Penglai Xianmeng, and the main person in charge is Shidong of the manufacturing group. Otherwise, he is already a shopkeeper, how can he help Yuantian find materials so accurately every time, and he doesn't seem to spend money.

Penglai Immortal League is worthy of being a diversified organization, and the things in the Tangram Pavilion are simply too comprehensive. Yuan Tian followed Shidong to the upper floors, which were not open to the public. In addition to being a warehouse, the bigger role is to let insiders come in and pick things. There are not only shelves for stocking, but also a manufacturing room dedicated to production and processing.

Think about the Tianyuan Sword Sect guarding a few swords left by their ancestors all day long, as well as the Eight Treasure Organ Tower that is rumored to be miraculous. People really can't be too conservative, and they can still starve to death with a big ingot all day long. The Tian Yuan Sword Sect is becoming more and more decaying, in addition to the fact that a lot of resources are used to heal that old ancestor, the obsolescence of the development model is also a big problem.

No matter how powerful the swords left by those ancestors are, they can only be used by a few masters. No matter how magical the Eight Treasure Organ Tower is, it is just a building, to put it bluntly, it is a dead thing. And the old ancestor who lived in it was really strange, although he was injured, he could also pass on the good exercises to the younger generations. If you have to make such a dead rule, you have to pass it on to the first few layers to learn a few layers of sword tricks. Those disciples who can't break through will not have a chance to reach them.

Breaking through the level does reflect a disciple's qualifications and kendo comprehension to a certain extent, but this is not the only criterion. Yuantian's root bone qualification is very mediocre, and he can still break through the past. Many disciples are not good at this, but on the other hand, they may be geniuses.

Because he saw so many good materials in the Tangram Pavilion of the Penglai Immortal League, as well as such a good manufacturing room, Yuan Tian had a lot of ideas. He couldn't help but sigh, if it was up to him to plan the development of the Tianyuan Sword Sect, it would definitely not be the bear he was today.

Forget it, it's too much to think about! Gentian retracted his attention and began to carefully select materials. During this time, Seto began to try to communicate with him about the sixteen spiral acceleration crossbows. But even if Yuan Tian carefully analyzed the construction principle, acceleration principle, force point balance and so on for him, he still couldn't understand it.

In Shidong's understanding, it is indeed possible to provide greater power through multiple spirit stone card slots. But then it's best to use a thick spiritual power delivery trough, so that the propulsion can be fully applied to the crossbow arrows. Even if Yuan Tian wanted to use multiple spiritual power delivery troughs, it should be to make several conveying troughs form a circle and act evenly on the crossbow arrows at the same time.

The sixteen spiritual power delivery troughs are all not on the same plane, and they are not working at the same time, which is really incomprehensible. What's even more incomprehensible is that Yuan Tian still wants to make the crossbow arrow rotate in a spiral, instead of rotating around the axis of the arrow.

The threaded crossbow bolts were made to make the bolts rotate to increase their penetration. But this time, the sixteen-position spiral acceleration crossbow, this way of rotation Shidong really can't understand. If you turn around like this, you are not afraid that the crossbow arrows will be thrown away.

Regarding these problems, Yuantian has already calculated them through formulas. As for such things as formulas, he really couldn't tell a person in the cultivation realm. For the cultivation of true understanding, such a thing as a formula is more difficult to understand than a book from heaven. You give him a book of heaven, he reads it every day and looks at it every day, maybe one day he really has an epiphany, and once he has become a feather flying immortal. However, the concept of formula has never existed in the cultivation realm.

"Big Brother Shi, can this card slot put second-order spirit stones?"

Yuan Tian found that the card slot here was different from the one that Steward Wang had found for himself, and it seemed to be of better quality.

"I can put it, but the pressure is too great to withstand a few hits. ”

The spirit stone card slot that Shidong found is indeed of a higher level, and if it is a first-order top-grade spirit stone, it can be used quickly and continuously. But the second-order spirit stone didn't dare to play like that, and if it came up a few times in a row, it would collapse.

"One time is enough!"

Yuan Tian muttered such a sentence casually, he didn't take it to heart, but Shidong thought about it. Is one thing enough? Brother Yuan, are you making crossbows, or are you going to blow yourself up?