The two finally decided that Yuan Tian would provide a large number of fire slurry talismans, and the sect could give him a few spiritual tools for him to study. Of course, Yuan Tian was happy, even if the Great Elder did not provide him with spiritual tools for research, he would still give the fire slurry talisman to the master to use. After all, this is a life-and-death stake for the survival of the sect, and Yuan Tian will not sacrifice everyone for his own strength. It's great to have the best of both worlds now.

The Dark Guard should be able to withstand it for a while, and Yuan Tian distributed a large number of fire slurry charms again. It can be said that for a long time, as long as there are no special circumstances, there will be no danger in the mountain protection array. You must know the temperature of the Flame Magma Talisman that even the Jindan Stage Monk did not dare to approach for too long, a magma ball is so powerful, let alone so much.

Although those demon beasts were stronger than the monks, they were still very intelligent and rushed upward. The biggest feature of the magma talisman is that it is sustainable, as long as the magma ball does not disappear, it is basically equivalent to an impregnable wall. Unless there is a stronger demon cultivator coming, it can guarantee that this place will be safe and sound for a while.

Yuan Tian got the spirit tool and couldn't wait to ask the Great Elder for a secret room, and then went in and began to study. It's a pity that these things are all inherited from the sect, and there are no design drawings. If you are responsible, with the manufacturing ability of Yuantian, you will soon be able to study and understand the spirit equipment according to the drawings. However, if there are drawings, they may be circulated, and once they are circulated. Not only can Yuantian make it, but there are many craftsmen in the cultivation world who can also imitate it.

None of the spirit tools inherited by the Tianyuan Sword Sect are not used outside, that is, in order not to be imitated by others. Only when the sect is facing a life-and-death crisis will the Dark Guard appear with spirit tools.

Yuan Tian himself understands the equipment, don't look at his cultivation is nothing in the cultivation realm. However, the knowledge contained in his head was beyond the comprehension of the people in the cultivation realm. For example, the chain crossbow he is dismantling now, while dismantling and drawing drawings. If Shidong sees this, he will definitely exclaim genius again.

In fact, for Yuantian, this is just the basic application of the simple calculation method of carpentry. This calculation method can make complex data simple, length, width, height, thickness, angle, radian, etc. can be accurately marked through graphs and formulas.

The process of dismantling is still very careful, because once it is not properly disassembled, it cannot be assembled. If it can't be assembled, the chain crossbow will be considered useless. It was for this reason that the Great Elder would be so melancholy and should he give Yuan Tian a research purpose. But after seeing the powerful fire slurry talisman, he no longer worried about it. He had seen the power of the Slurry Talisman with his own eyes, and it couldn't be better if it was used to solve the problems faced by the sect at the moment.

Yuan Tian is still carefully disassembling the chain crossbow, this thing is really complicated. It's not a simple crossbow made of bamboo pieces and bowstrings. Instead, there are pulleys, crossbow arrows to quickly fill slots, trigger paddles, spirit stone card slots, and spiritual power delivery slots.

The materials used to make these accessories are not simple, and every part, large and small, is made of high-quality materials, which also guarantees the durability of the chain crossbow. After Yuantian disassembled and recorded all the data, he put it back in its original form according to the drawings and figures he had drawn.

After inlaying the spirit stone, he shot an arrow at the ground. The bolts are still so powerful, but fortunately there are no assembly errors. Everything else is easy to say, but there is one thing that Yuan Tian can't understand, that is, the spirit stone card slot and the spiritual power delivery slot. These two things were beyond his comprehension, and he had never seen them in his previous knowledge. It feels like some kind of energy transformation machine, which can convert the energy of spiritual power into kinetic energy that is emitted outward.

In order to test the accuracy of the assembly drawing, Gentian took out some wood pairs, carved the accessories according to the standard size, and then assembled them in the same way as the original chain crossbow.

Well, no problem! Except for the fact that you can't convert spiritual power into firing power, there's nothing wrong with anything else. It seems that the most important thing at the moment is to get this kind of thing that can convert spiritual power into firing power. And this thing is actually the spirit stone card slot.

Regarding the term spirit stone card slot, Yuan Tian had seen it in the book of the Evil Immortal Venerable again. Since he didn't need it at the time, he didn't pay much attention to it. Now that this thing must be used, Gentian had to take out the book again and study it carefully.

He was reading in the secret room, and the battle outside was fierce. There were not only ordinary iron-winged eagles in the iron-winged eagle flock, but after a while, the eagle king began to pounce every once in a while. The Eagle King's iron feathers are so powerful that a few shots from a crossbow arrow are fine. An ordinary iron-winged eagle can shoot through the neck with a single arrow, so it is not difficult at all. But the Eagle King reacted quickly, and he quickly waved his huge wings.

The wind from the wings causes the bolts to deflect weakly, and the flapping of its iron wings knocks most of the bolts off. Even if a crossbow arrow was fired at the Eagle King, it would be blocked by its hard iron feathers.

The Darkguard are a well-trained team, and even when they encounter such situations, they don't panic. Several people cooperated with each other, some shot at the neck and head of the Eagle King, while others simply shot at the base of the Eagle King's wings and chest.

Although the crossbow arrow could not penetrate the Eagle King's iron feathers at once, the impact force produced was still very huge. The Eagle King swung his wings to flap the bolts that were shot at his neck and head, but he did not prevent his wings from being shot by the bolts. While these bolts cannot damage it, they can hinder the swing of its wings, thus destroying the Ironwing's defenses. At the advanced level, crossbow arrows were fired at its relatively weak belly. The feathers in that place are smaller and softer. Pierced by a continuous stream of crossbow arrows.

"I'm coming!"

It was Thunder Zi who volunteered again, and saw that the Dark Guardian was disturbed by the Eagle King, and the speed at which he killed the Ironwinged Eagle slowed down. Lei Zi can't wait now, he has to deal with the demon beast again.

The Great Elder was still hesitant to organize the Thunder Son, because he had just recovered, and if he used the Thunder to punish the world again, it would not be so easy to recover. I saw Lei Zi holding a purple sword, sending out sword qi into the sky.

The purple sword qi slashed at the Eagle King like thunder, smashing the Iron Winged Eagle King's head before he could defend himself. The Great Elder was relieved to see that he was not attacking the world with thunder, but attacking with sword qi one at a time. This attack method is very strong in a single body, but the consumption of spiritual power is not much.