Gu Fan is very familiar with the Immortal Ancestor Battle Formation and has controlled it more than once.

The various battles participated in as the Immortal Ancestor Battle Formation can also be described as countless.

However, Gu Fan has never understood the battle formation of the Immortal Ancestor.

Although this is why Gu Fan did not understand it, on the other hand, it has to explain one thing - that is, the Immortal Ancestor Battle Formation itself, it is really difficult to understand it.

Otherwise, even if Gu Fan didn't deliberately understand it, he should have already realized the Immortal Ancestor's Battle Formation after so long, but the reality is that Gu Fan did not do this.

Apart from using the difficulty of understanding the Immortal Ancestor Battle Formation to explain, there is really nothing else to explain.

When Gu Fan began to understand, he did feel the difficulty.

However, this difficulty becomes less difficult after the ancient sails penetrate it.

Combined with the experience of those who had previously understood the Immortal Ancestor Battle Formation - Gu Fan knew that this was because he really had talent in this area. Otherwise, he would never have felt this way.

As expected, Gu Fan got started soon.

Then, we continued to deduce step by step and confirmed it with the Immortal Ancestor Battle Formation. Especially from the current perspective to understand the previous control, the feelings brought by such different perspectives are also completely different.

And soon, Gu Fan frowned.

He found that there were many places in the Immortal Ancestor Battle Formation, which seemed to be imperfect.

It is not the imperfect deduction of Netherworld, but it is very smooth to observe from the overall deduction of Netherworld. However, I don’t know if some of the parts of Netherworld are different from Gufan. Gufan found that some things were not involved in Netherworld.

Gu Fan was interested. If these things were added, would they solve the problem of slow growth in the Chaos God level? If this problem can be solved, it would be of great significance.

The ancient sail quickly sank into it.

Gu Fan quickly discovered that these things were really difficult. He clearly saw the problem, but how to solve these problems and improve them requires too much energy.

In addition to taking care of Xu Nihua's growth, Gu Fan also maintains intercepting practice, and then observes everyone's cultivation status and occasionally gathering with the girls, all the other time is spent on this aspect.

From the beginning, solving the problem and advancing it little by little. Gu Fan completely forgot the concept of time.

Sometimes, a very small problem needs to be solved by focusing on the whole, but it takes tens of thousands or hundreds of thousands of years to solve it in the ninth floor of the Qiankun Tower.

Gu Fan's purpose of passing the time was completely achieved.

However, Gu Fan has now forgotten the purpose of passing the time. He really wants to solve the problem of the Immortal Ancestor Battle Formation.

The more he studied, the more he felt that although the Immortal Ancestor Battle Formation, which the Netherworld realized, was strong, it was not the most perfect. He had a premonition that as long as he could solve all problems in a series and reach a perfect state of 90,000 people, the Immortal Ancestor Battle Formation would definitely change greatly from the previous one.

Time passes by little by little.

Real time has passed ten thousand years and ten thousand years.

Ten thousand years in reality is equivalent to 5.12 million years in the ninth floor of Qiankun Tower!

Gu Fan spent more than 20 million years on the battle formation of the Immortal Ancestor.

Even Cheng Shumeng and the others have completed half of the progress of the late stage of the Great Saint.

My sister Gu Yun's speed was faster, and she had already exceeded half of it. Even her father's side had made a lot of progress at the early stage of the Chaos God.

But Gu Fan still did not completely deduce the brand new Immortal Ancestor Battle Formation.

Until the Netherworld comes out.

The total research time has reached nearly 30 million, but the problem has not been completely solved.

However, after the Netherworld came out, Gu Fan immediately put aside the study of the New Immortal Ancestor Battle Formation.

Compared with looking for Fire Soul Stone, the new Immortal Ancestor Battle Formation is lined up behind.

"Master, according to the previous strength, I will definitely have no problem with persisting for 100 minutes!" Youming came up and sent a message to Gu Fan with great confidence.

"Hahaha! OK! OK!" Gu Fan was overjoyed. This was really great news.

One hundred minutes, how dare you think about it before? It seems that it is really too great to let Nether advance to the middle stage of the Chaos God and keep himself from advancing.

Without any hesitation, Gu Fan immediately ended everything and set out to the Heart Hell.

Even in a hurry, Gu Fan did not forget to hide himself and be cautious.

The more you are at this time, the less you cannot be delayed by anything.

Gu Fan was not stunned by the joy of Netherworld leaving the gate.

Gu Fan, who successfully reached the Heart Hell and constantly adjusted his emotions along the way, did not need to stay outside. He chose a position at will and rushed into the Heart Hell directly.

"How?" After entering the Fire Hell, Gu Fan asked the Netherworld while teleporting with the help of the soul domain.

I said a hundred minutes earlier, just guessing, just judging, just analysis, just estimates!

Now is the real experience, and now the feelings and calculations are the most real.

"Master, the strength has not changed much compared to last time! My inference is absolutely fine! One hundred minutes!" The Netherworld sent a message, and this news was the greatest blessing for Gu Fan.

"Okay!" Gu Fan calmed down and teleported firmly to the middle-level area.

In short, this is Gu Fan's fourth time coming to the Heart of the Fire of Heart.

All the first three times failed.

So, what about this time? Will this time succeed? Gu Fan doesn't know, but Gu Fan will do his best to pursue success.

The same thing, if it doesn't work this time, then next time.

As long as there is a fire soul stone in the Heart Hell, Gu Fan is sure that he will definitely be able to find it.

In five minutes, Gu Fan arrived at the middle level of Xinyi Hell.

Gu Fan stepped into the middle-level area without hesitation, and his soul domain instantly dropped from a detectable radius of millions of miles to a radius of hundreds of miles!

Gu Fan missed the Space Holy Stone very much. If there was a Space Holy Stone - the detection range here was larger, then there was a greater chance of finding the Fire Soul Stone.

Gu Fan did not start the soul domain particleization immediately. Now there is enough time. If you count the time of return, as long as you control the safety line, the later you go deeper into the middle-level area, the more likely you will find the Fire Soul Stone.

The possibility of Fire Soul Stone exists in the outer periphery of the middle-level area is still a bit small.

It is better to go deeper into a further area.

"Youming, there's no problem!" Gu Fan did not forget to ask Youming.

"No problem! Everything is normal!" Youming answered firmly.

"Okay!" Gu Fan kept teleporting, and it was clear whether there was a fire soul stone in the area where the teleportation was covered.

In fact, it is not only Gu Fan who is looking for it, but others are also looking for it when they open their soul domain vision.
Chapter completed!