More than ten days of brewing has pulled the expectations of many monks for the thunder explosion of the son and mother to the maximum, and the sale on this day immediately triggered a rush to buy.

On the first day alone, tens of millions of people were sold!

The huge sales figure made Liu Qing, who saw this number, laugh heartily.

According to his current cultivation realm, his divine thoughts are boundless, and his calculation power is amazing, even if he doesn't use pen calculations, he can calculate how much benefit the military has gained from these tens of millions of orders.

And that's just the first day.

On the second, third, and fourth days, the sales were still hot, and there was no trend of decline.

At the same time, the combat data on landmines is completely highlighted.

Undoubtedly, in the starry sky adventure, this son-mother continuous thunder is indeed an artifact, especially in the face of those starry sky creatures with low intelligence, the effect is particularly outstanding, often allowing adventurers to leapfrog and kill opponents, so that many people try the pleasure of leapfrogging to kill enemies.

Many monks left messages on the rune network, praising them greatly.

"This thing is very good, a few days ago when I was on an alien adventure, I was chased by a powerful creature, I was almost desperate, and in desperation, I used this thunder to burst the thunder, but I didn't expect that it was this thunder that kept me alive!"

"There are often monsters on our sect's side, and since this thunder, I have never been harassed by strange beasts!"

"This magic weapon is good, you can buy a few more and keep it in reserve!"

......

In terms of dealing with all kinds of monsters, the effect of the thunder explosion of the son and mother is surprisingly good, however, when facing monks and gods and demons, it is not very useful.

The reason is simple.

After arriving at the Dao Foundation Realm, the monk's divine thoughts can come out of his body and sweep in all directions. In this way, the effect of the thunderbolt buried in the ground is very ordinary.

And the descendants of the gods and demons of the second order also have divine thoughts, and because of this, the son and mother even exploded thunder and was only caught off guard at the beginning, which was quite contributious, and later. The usefulness also seems to be chicken.

Rao is like this, this magic weapon is still the first choice of thousands of monks, and it is indispensable to adventure in the starry sky.

As a result, the popularity of sales has never stopped!

But Liu Qing was not satisfied.

In his opinion, there is still more room for development of this magic weapon.

Although the effect of the Zimu Explosion Thunder is limited and cannot harm the powerhouses of the Jiedan Realm, it is the most suitable killing weapon for low-level beings. As long as it's stealthy enough to change the tide of battle on a local battlefield!

In order to enhance the income, he immediately contacted Xia Chao and them, and put down his arrogance, as long as the effect of mine improvement is good, he can add another five billion investment!

Hearing the news, Xia Chao naturally readily agreed.

He had already had an idea, and he thought of using the phantom array to cover up the traces of mines. Now, it just gave him another great opportunity to make money.

And want collaborators. Naturally, it was Xu Zhengyang, Lin Qing and Qi Zhaoxing.

If he studied alone, I am afraid that he would not want results for decades, but if he could have the participation of a strong person in the Yudan Realm, his time would be compressed to the extreme. Maximize efficiency.

Besides, he also needs to unite the strong and build a solid enough network for himself.

In this world, it is not a good thing to eat alone, and the benefits are equal. It's the real king!

And when Xia Chao told a few people about his thoughts, Xu Zhengyang and they immediately said that there were not enough personnel, and they had to bring another one in.

It turned out that the few of them were just cultivating the way of the phantom array, and they could make do with a little simple at ordinary times, but once they touched on the more critical content, their formation diagram was not enough, so they needed to pull in another person.

And Xia Chao, the person everyone wants to pull in, has also seen it, and it turned out to be Su Yun, the assistant teacher who had taught him.

When they met, Su Yun was as soft as ever, her skin was like clotted fat, her face was like a peach blossom, and Yingying smiled and said hello.

"If I succeed this time, I can also be promoted from a teaching assistant to a lecturer, and I will have to bother my friends. ”

Listening to Xia Chao, he was humble again and again, and he was busy saying that he was honored.

At this point, the personnel are fully equipped and everything is ready, and the research program to upgrade the mines has officially begun.

Everything in the world is easier said than done.

It's a good idea to shield mines with a phantom array, but in reality, research and development is not easy.

In the battle with the possessed clan, Xia Chao seemed to use the phantom array to ambush the strong, and the process was very simple, but the phantom array was obviously not suitable for the standard positioning of the son and mother even thunder.

What are landmines used for?

Hidden underground, obscure, in a silent place, used by the Yin people, like the use of Xia Chao, is obviously not the mainstream righteous way.

As for the suitable phantom array, they studied it for a full month, and only then did they create a relatively good phantom array.

But then came the problem.

The requirements for setting up the phantom array are too high.

The innovative array is a high-level array, which can only be laid down by a strong person in the Yu Dan Realm, and a large number of disposable magic weapons like the Zimu Lian Explosion Thunder can never let a strong person in the Yu Dan Realm behave in a proper manner and make it on the side.

You must know that a mine is only sold for fifteen thousand, and it is only hundreds of millions of dollars when it is calculated that 10,000 is calculated, which is not counting the cost, and the powerhouses of the Jiedan Realm are tens of millions per minute, how can they waste time for this kind of disposable magic weapon?

Come on, everything is overturned.

In this regard, Xia Chao didn't feel anything.

In this kind of research, he has learned a lot of knowledge about the phantom array, which can be said to be very rewarding, even if he reverses and starts over, there is no pressure, because he can learn more and increase his own heritage.

Several other professors didn't think it was a big deal.

Research, there are fast and slow, temporary setbacks are common, cheer up, start over, it's not a big deal.

Only the corners of Qi Zhaoxing's mouth twitched, and his face was not good.

Because he was the only one who personally tested the explosion......

The second month passed.

Xia Chao had already learned the Elementary Phantom Array, the Elementary Fire Array, and the Elementary Thunder Array.

Suddenly, looking back, mine research is being upgraded.

The third month passed.

Xia Chao took down the Initial Water System Formation Diagram and the Initial Earth Formation Diagram again, and even began to learn the Defense Formation Diagram.

Suddenly, looking back, the mines are still being studied and upgraded.

The fourth month passed.

Xia Chao had already learned all the basic formations he needed to learn, and he had nothing to do, and even began to practice various martial arts and divine techniques to strengthen himself.

Looking back, the mines are still being studied and upgraded.

Fifth month.

Finally, the upgraded version of the mine has been developed and freshly baked!

Its overall structure remains the same, it is still a bra-shaped thunderbolt, but the metal wire that connects the array plate has changed, becoming a rectangular block, and on it, a group of phantom array diagrams are engraved.

This phantom array diagram is simple and effective, once the phantom array is activated with mana, it can cover the shape of the thunderbolt of the son and mother, even if it is swept away by the monk's divine thoughts, it will not be recognized.

It's just that because of this small change, the cost has increased by six thousand.

That is, the cost of mines for the upgraded version became twelve thousand.

Although it is 12,000, it is still very cost-effective compared to the lethal magic weapons that cost hundreds of thousands or millions at every turn, so it has also been happily accepted by the military.

This time, the mines were not sold to the entire humanitarian community, but were reserved for the military's own use.

After all, the upgraded mines are enough to kill and injure human monks, and in order not to cause too many side effects, this magic weapon is only produced for the humanitarian army, not for civilian use.

In this regard, Xia Chao has no opinion.

After receiving the money, he naturally will not be idle and take care of the military.

The new mine summer wave only accounts for 30 percent, and the remaining 70 percent goes to the professors themselves.

After all, the new type of mine is mainly to study the phantom array side, and his contribution is really not much, and he can account for 30 percent, all because the explosion array diagram was created by him.

Although the proportion has decreased, Xia Chao once again has 1.5 billion in his account, plus the income from the previous Light Formation Diagram, the sharing of mine benefits, and the resource consumption used in cultivation, at this time, he actually has 5 billion assets!

This is nothing, what Xia Chao is more concerned about is that the research of this magic weapon takes too long.

When you think about it, it took five months.

In this long research process, Xia Chao not only learned a lot of array diagrams, but even his cultivation had reached the peak of the middle level of qi induction, and he was only one step away from the upper level of qi induction.

Aware of this fact, Xia Chao was silent for a long time.

It didn't take long for him to sigh from his heart.

"Hey, people say that there is no time for cultivation, but when you come to me, how do you feel that there is no time for research?" )