After that, Bai Yuzhe immediately took Dugu Aoxue and the Dragon Girl back to the purple bamboo forest on the second floor of the Tower of Babel, and was able to bring outsiders to live in this place, and it is estimated that only Bai Yuzhe has this face at present.

In the following days, the two girls took care of their own cultivation, and Bai Yuzhe was basically locked in the practice room alone and began to study the formation.

If you want to crack the stealth array, it's really not easy. The stealth array is to hide all the breath, plus the things that can be seen with the naked eye, unless the peerless powerhouse and the formation attainment has reached the level of Bai Yuzhe, it can't be seen at all.

Even if it was Bai Yuzhe himself, if it was in a static state, it would not be easy for him to find out.

Therefore, if you want to refine a formation disk that can be cracked, you can only let this array disk exude an invisible energy, covering a large range, so that this energy can sense the location of the stealth array disk, and this energy must also be insensitive to others.

Even, Bai Yuzhe also wants to let this kind of energy radiate without the need for his own urging, otherwise, how can anyone urge this energy all the time.

There is only a thousand days to be a thief, and there is no reason to prevent thieves for a thousand days.

In this way, there are too many aspects involved in this array, even with Bai Yuzhe's ability, he doesn't know how much hair he has pulled recently.

In his practice room, the ground was full of pieces of metal, these metals were relatively ordinary, and now it was the experimental stage, so naturally it was impossible to waste those rare metals.

These metals were engraved with countless formations, but they were still on his side, and he felt that it was not appropriate.

After more than ten days, there was still no clue, and then the two old men, Zhao Qin and Lei Yue, came over! The two of them, one was a caster in the top five, and the other was an alchemist in the top five, and they had a stealth formation with Bai Yu many years ago, so their formation attainments were quite high.

At this time, I naturally wanted to see if I could help. There are also some selfish motives who want to learn more from Bai Yuzhe.

Bai Yuzhe didn't refuse, Babel Tower was his home in his mind, he wouldn't be defensive against these two old men, and it didn't matter if he taught them more things.

"Yuzhe, more than ten days have passed, is there any progress?" As soon as he came in, Zhao Qin asked, he was more familiar with Bai Yuzhe, so he also seemed more casual.

Lei Yue also looked at Bai Yuzhe with a look of hope, this research is another major breakthrough after the stealth array.

"It's difficult! It's too difficult! There is no breakthrough progress at the moment!" Bai Yuzhe shook his head, his current image is really not very good-looking, a little disheveled, with a scruffy beard, looking a little decadent.

The two old men were slightly disappointed, and Zhao Qin asked again, "What...... Where are you having problems? See if we can give us some advice?"

"The first point is what kind of formation we need to use to form energy, so that we can be silent, and even the top masters can't perceive it. The second point is that this kind of energy does not need to be urged by a martial artist, and it can continue forever. Thirdly, this kind of silent energy must also be able to instantly detect the almost non-existent fluctuations of the stealth array. These are the most obvious three major problems, and there are some seven, seven, eight, eight, eight, and eight things, and I can't finish talking about them for a while. After Bai Yuzhe finished introducing, he looked at the two old men and waited for their suggestions.

After Bai Yuzhe finished speaking, he looked at Zhao Qin and Lei Yue with a look of hope, although the formation attainments of these two people were far inferior to him, but they were also the top level on the continent, and they were old and experienced, what if they really had any good ideas?

However, he was soon disappointed, and after Zhao Qin and Lei Yue frowned and thought for a while, they shook their heads blankly, not having a clue at all.

The problems that Bai Yuzhe said were almost unheard of, and they couldn't give any advice at all for a while.

For example, the second point is that this invisible energy can be automatically emitted, and there is no need for a martial artist to provide it. If the formation is arranged, many formation grandmasters will be able to run the formation automatically.

But the problem is that what is to be refined now is the array plate, not the arrangement of the formation, and the biggest difference between the two is the size of the range.

Since hundreds of thousands of years of history in the Lost River Continent, I have never heard of a small array plate, which can be automatically operated without the stimulation of a martial artist, and is self-sufficient.

Not to mention that the two puzzles seem to be more difficult......

The two old men had no choice, but they didn't leave, so they stayed directly in Bai Yuzhe's practice room. Anyway, what Bai Yuzhe does, they can help if they can, and if they can't help, they will watch and don't ask, and they can learn as much as they can.

"The array disk operates on its own, and it should be possible to solve this problem!" After another three days passed, Bai Yuzhe already had some eyebrows in his heart, which was a bit similar to the original stealth array disk.

It's like arranging a phantom array that can confuse the eyes, and many formation grandmasters can do it, although not as thorough as Bai Yuzhe's.

But they just couldn't make such a formation on a small array.

The problem is to reduce the formation pattern, the range, and play the same effect.

After knowing this, Bai Yuzhe began to delve into the other two major problems, the most important of which was to choose first, what energy can be done silently, so that the top powerhouses have no way to detect it?

As a result, the two top powerhouses began to speak......

"Air ......"

"Natural light. ”

“............”

I just said two, and then the two of them couldn't think of a third, so there was really nothing else. The top powerhouse can be said to be able to detect any energy fluctuations at the first time.

And these two points they say can theoretically be called a kind of energy, but in practice......

Even they themselves are embarrassed to say that this can be called energy, let alone rely on these two things to find the stealth array, and the stealth array itself is hidden in these two substances.

Therefore, after saying these two substances, Zhao Qin and Lei Yue both blushed a little, this is impossible at all......

"Air, natural light, air, natural light......" Bai Yuzhe ignored Zhao Qin and Lei Yun, muttering to himself alone, constantly muttering these two words, as if he wanted to capture something.

"The air is definitely not good, but if there is natural light, can you try it like this?" After a while, Bai Yuzhe's eyes lit up, and he immediately stood up, quickly opened the door and rushed out.

Zhao Qin and Lei Yue stared at each other, why did Bai Yuzhe, who had just said that he could try, suddenly rushed outside?