The seven of them all had a certain amount of wisdom, so they naturally understood Gu Tiancheng's hints, and they all nodded to show that they understood.

Gu Tiancheng talked about some details of the cooperation again, and then withdrew.

In this way, although the Demon Gathering Banner cannot be used in battle for a while, it can at least help others quickly advance to the Yin and Yang Rank, which is also a good thing.

Moreover, once the dark energy of the Demon Gathering Banner can maintain its balance, the light and dark energy is a huge deterrent in the world of yang attribute spiritual power.

Although the dark energy cannot see the light, if anyone dares to offend the Allenists, they will come to the door. As a treasure of the town faction, the Demon Gathering Banner can come in handy. No matter how strong a character he is, as soon as the demon flag comes out, only the yin and yang attributes and spiritual power are restrained, and the other party is restrained to death.

There are countless ancient strange arrays on the Demon Gathering Banner, Gu Tiancheng doesn't have the talent to study it, after all, it is a reverse project, except for Kai Rui, no one can complete a reverse projection of this magnitude. Even Kerry takes a certain amount of time.

Now, Kerry already has two physical objects in his hands, the Mayan Divine Bow and the Demon Gathering Banner, and I believe that with Kerry's ability, he will definitely be able to reverse the logical laws and conceptual system of the ancient formation.

When the time comes, as long as Gu Tiancheng learns this, he will be able to make ancient magic weapons by himself. Even if the quality of the material is not enough, it is still an ancient artifact. Even if it's a one-time thing, it's an invincible existence.

Gu Tiancheng's achievements in the formation, the road to learning is very interesting. Contemporary formations, Gu Tiancheng studied them completely by himself, found formation books through various channels, and understood them little by little. That's a good foundation.

The rest is that Kerry appeared, and first explored the formation system of magic weapons such as the Imperial Qiankun Ding and the Hundred Treasure Umbrella, so as to learn the formation system of the post-gods era thoroughly.

At this level, in terms of formation, Gu Tiancheng has already beaten all the masters in the world. Any magic weapon, Gu Tiancheng can be used to transform, makeover, and become what he needs.

Even, Gu Tiancheng also found a set of methods from the formation to use the formation to improve the power of combat skills, which can be said to have many benefits.

Then, it's time to learn the most difficult ancient formation. Gu Tiancheng still has finished products in his hands, and the Mayan Divine Bow is one of them.

The Mayan Divine Bow has been in Gu Tiancheng's hands for the longest time. It is the most helpful for Kerry to master the ancient formation system.

The reason why Gu Tiancheng was able to quickly master the formation system of the Mesozoic Era was because of the result of studying the Mayan Divine Bow, although he had not yet cracked the ancient formation, but it was no problem to use it to crack the Mesozoic formation.

Now that there is a Demon Gathering Banner again, which corroborates each other with the Mayan Divine Bow, I believe that with Kerry's ability, he will be able to find a breakthrough soon. When the time comes, Gu Tiancheng will be a formation master who has learned from the past and the present.

The Demon Gathering Banner is an ancient artifact, just like the Mayan Divine Bow, Gu Tiancheng is not worried about what the Mercenary Guild will do on it. After a brief disposal and familiarization with the basic operation, Gu Tiancheng put it aside.

I have to say that the artifact is really the embodiment of human wisdom. Originally, with the strength of human beings, if you want to use the ancient artifact, there is no door. But human beings have achieved this through the role of envoys. Although it can't bring out the full strength of the artifact, at least it can be used. There is a qualitative difference between there and not!

With Gu Tiancheng's current strength, if he wants to sacrifice the Demon Gathering Banner and urge the Demon Gathering Banner to participate in the battle, it is still far away. But Gu Tiancheng has his own way. He can drill into the Demon Gathering Banner, greet the elemental body inside, and merge with the outside, so as to achieve the purpose of exerting the strength of the Demon Gathering Banner.

This clumsy way of fighting is certainly not what Gu Tiancheng is pursuing. But at the moment, we can only solve the problem of existence first. After Gu Tiancheng figured out the principle and logical relationship of the ancient formation, Gu Tiancheng could start to transform and transform the Demon Gathering Banner into an artifact that he could use.

Even if it is transformed into a whip, the Demon Gathering Whip with dark attribute energy is an invincible existence.

Gu Tiancheng took out the glass jade net bottle again, and the Tianyi dust water in it had been sucked up by Gu Tiancheng, leaving not a drop. Gu Tiancheng was considering whether to re-inject Tianyi dust water back into the glazed jade net bottle to restore its original strength.

The conclusion came out quickly: No! Before finding out the glass jade bottle, we must not hastily restore it. Besides, even if there is no dust and water in the sky, the glass jade net bottle is still a rare artifact. Gu Tiancheng was already very satisfied.

Holding the glass jade net bottle in his hand, Gu Tiancheng stroked it with his hand, feeling the runic formation system on it. The glazed jade net bottle is regarded as an artifact-level magic weapon in the Mesozoic Era, and Gu Tiancheng naturally has no effort to study it. With Kerry's help, in less than an hour, Gu Tiancheng figured out all the formation structures above.

In the process of exploring, Gu Tiancheng already had a general idea in his heart: the Demon Gathering Banner is the representative of the spiritual power of the dark attribute, and the glazed jade pure bottle is a typical example of the sunshine attribute. Putting one yin and one yang together, with the appropriate formation, it is simply the supreme realm for cultivating Allen's exercises!

With the blessing of the Demon Gathering Banner and the Glass Jade Pure Bottle, it would be much easier for Sima Xin and them to advance to the Yin and Yang Level. With Gu Tiancheng by his side, it is simply a foolproof promotion.

But Gu Tiancheng was obviously not satisfied with such an arrangement. It's forgivable that the Demon Gathering Banner can't take it, if the glass jade bottle can't be taken out to fight, wouldn't it be a tyrannical thing?

After thinking about it for a while, he couldn't think of a suitable way, so Gu Tiancheng had no choice but to compromise with reality. After all, people matter. As long as Sima Xin and the others can cultivate, the Allen faction will be able to prosper, and there will be no need for Gu Tiancheng to come out everywhere. Gu Tiancheng can have some remaining time to do some inventions and creations.

The next thing to deal with is the dust and water. This is sacred water, which is equivalent to the source of all things! Without the glazed jade net bottle, Gu Tiancheng really can't find a suitable container to hold it, but fortunately, Gu Tiancheng's mirrored glazed jade net bottle can support a lot of time, so that Gu Tiancheng can mirror another one in time. Otherwise, Tianyi dust water can really only be refilled with the glass jade net bottle.

Such a precious water, of course, should be brought to scientific experiments to explore its feasibility and usability in many aspects. Gu Tiancheng believes that the usefulness of Tianyi dust and water is not only in the annihilation of attributes, since it is the source of all things, it will definitely be able to promote the growth and prosperity of all things. It's just that it lacks the means to suppress its annihilation attributes, and it can't be exploited in this area.

In this regard, Gu Tiancheng is considered to be the strongest. The industrial civilization of the previous life was based on understanding the basic principles of nature and developing a brilliant industrial civilization through ingenious industrial design.

Although Gu Tiancheng only knows a little about industrial civilization and has not studied it in depth, Kerry understands. Although I don't understand everything, as long as I understand a little, it is enough to use it in the Shining Continent.