Gu Changsheng looked at the Zhuji Dan in his hand intently, flipped it with one hand, and swallowed it into his stomach.

Before the retreat was established, Gu Changsheng met with Gu Feichen and Bai Ruoxi once, and he prevaricated with the two of them about setting up a large array on the two peaks under the pretext of reinforcing the big array.

Neither of them objected, but felt relieved that the large array had been strengthened and the chamber had become safer.

As for the matter of the secret cave in the mountain, Gu Changsheng planned to let the two of them enter after reaching the Yuanying realm. Only by becoming a Yuanying monk in the human world can he be regarded as the overlord of one party, and he is qualified to protect the water and soil of one party.

If you leak the secret of the 'Eight Desolations and Six Formations' in advance, you will be killed!

Back to the matter of building the foundation, Gu Changsheng was actually completely sure that he would swallow the foundation building.

For a monk with an immortal soul, the biggest change in foundation building comes from the body. Specific to Gu Changsheng himself, after completing the foundation building, his body would be able to withstand the impact of the Tiangang Golden Thunder.

This kind of righteous path thunder method, which is regarded as a thorn in the flesh of the ghost path and demon path cultivators, can use a powerful effect even for ordinary foundation building monks.

And the premise of getting these benefits is to bear the reshaping of the body by lightning punishment in the process of building the foundation!

This is the saddest level for Brother Lei Linggen in the process of building the foundation.

On the other hand, Gu Changsheng had already sensed that this snatched flesh body possessed a powerful thunder spirit root. Although there was an accident when the foundation was built last time and it was bombarded by a thunderbolt, this body actually carried it.

The reason for this is actually because most of the heavenly thunder was absorbed by the thunder spirit root in the body, and the power that overflowed to all parts of the body was only one-twelfth of it, which miraculously saved his life.

With this experience, Gu Changsheng decided to make a big wave and directly use Tiangang Golden Thunder to help him reshape his body!

Because, he found a golden thunder in Mu Tu's storage bag, a big killer that can kill a large number of demon souls in an instant!

Through the Gathering Thunder Array, the thunder energy of the Golden Thunder can be released into the large array first, and then through the opening and closing formation, the release of the Golden Thunder can be controlled freely.

At this moment, a pale golden arc shot out from the formation and wrapped around Gu Changsheng's body.

The sound of "poof" continued, and after the body was hit by this pale golden arc, it continued to precipitate curling green smoke visible to the naked eye, and disappeared without a trace.

Gu Changsheng was in severe pain at first, but after slowly adapting to it, his body gradually became crispy and numb. Then he laughed instead, and laughed very happily!

He was now curious to know what kind of funny expression the Mutu Daoist would have had if he knew that he would use such a means to save his life.

Next, the output of Jin Lei was increased, and there was a stinging pain on his body, Gu Changsheng solemnly pinched a magic decision, his face was glowing, and a layer of white light gradually appeared all over his body.

As the white light became thicker and thicker, Gu Changsheng opened his mouth, and a slender silky Chiyang True Fire blurted out, spraying right on the golden thunder arc in front of him.

With a "crackle", a pale golden arc unceremoniously wrapped and fused the Chiyang True Fire in front of Gu Changsheng, making it even more refined.

Seeing this scene, Gu Changsheng's eyes flashed, and the red-golden thunder fire instantly enveloped his body with an electric arc, and began the long process of building a foundation.

This process consumes a lot of spiritual power, but fortunately, Gu Changsheng has been prepared for this for a long time. While building the foundation on the one hand, he grabbed a dark purple spirit stone with both hands at the same time, and began to absorb the spiritual energy in it.

Even if these pills could not be converted into mana immediately, the sufficient spiritual power contained in them was enough to make Gu Changsheng, who was preparing to fight a protracted battle, fearless.

A month passed, and the impurities in Gu Changsheng's body finally dissipated under the tempering of Jin Lei. The unblocked red thunder fire was attached to the arc, and it directly began to refine the thunder spirit root in Gu Changsheng's body.

After another month, Gu Changsheng's skin showed signs of molting, and some parts began to glow faintly, oozing dense beads of various colors.

After another month like this, the impurities of the entire body were finally removed, and Gu Changsheng completed a rebirth.

Moreover, after the Chiyang True Fire was tempered by the Golden Thunder, it regathered into his dantian and became the Golden Yang True Fire!

Feeling the changes in various parts of his body, Gu Changsheng breathed a sigh of relief. As long as you can pass the level of Jinlei Plastic Body, the following will be much easier.

Think of it this way! Gu Changsheng closed the Gathering Thunder Array and put away the spirit stones in his hands.

Then with ten fingers on both hands, ten spiritual threads as thin as strings flew out and were inserted into the green liquor.

Subsequently, Gu Changsheng's fingers kept flicking, allowing Zhuji Dan's spiritual power to help the body's meridians complete the expansion, so that the output ability and accumulation ability of spiritual power could be greatly improved.

Then one day, two days......

When the last trace of Tsukidan's aura was exhausted, he opened his eyes hotly, and then he was happy to find that he had successfully rushed through the level and had entered the foundation building period.

However, before Gu Changsheng had time to think about this question, a golden magic bolt was issued, and a golden lightning bolt shot out from between his sword fingers.

Then the lightning was controlled, and in a vague and fierce shaking, two identical golden thunderbolts suddenly appeared, which were the "lightning splitting technique" of the Jin Gang Thunder Method.

The pale golden thunder arc with the thickness of two fingers slashed towards the gathering thunder array in a fleeting manner.

The pale golden arc collided with the wall of the Gathering Thunder Array, and the strong thunder in the array became a stalemate for a while. After a while, it was bounced back to the stone wall, "Bang! The sound was gone.

When Gu Changsheng saw this scene, he didn't panic but became happy.

This shows that although his Jin Lei is still relatively weak, he already has the strength to fight. If you encounter a ghost cultivator or a demon cultivator, even if the other party is a cultivator in the late stage of foundation building, you can guarantee that you can get out of the whole body!

……

A year has passed in the blink of an eye.

On this day, Gu Feichen sat in the hall of the tiled house, with a sad face! At this time, he had already learned from the teahouse about the rumors of a great battle in the Taiqing Mountains. Since Gu Changsheng didn't show up for a long time, he thought that his eldest brother had taken the risk of exploring the treasure and had an accident!

Just when Gu Feichen was full of sorrow, suddenly the wooden door in front of him flashed white, and then it opened silently, and then a person walked in with a spring breeze on his face, it was Gu Changsheng who had been in retreat in the secret cave mansion for a year.

Gu Feichen, who reacted after a while, was suddenly surprised and delighted, hurriedly took a few steps forward, and said with a complaining mouth:

"Big brother, why are you only coming back now, if you don't come back, I'm going to ......, heh! You......! ”

Gu Feichen, who had only opened his mouth to say a few words, suddenly his eyes were round, and his big mouth could eat a catty, pointing directly at Gu Changsheng, who opened his mouth and stammered, unable to say anything!

"What's wrong, what's wrong with me?" Gu Changsheng looked at Gu Feichen, then at his body, and said inexplicably.

"It's hard to ...... Could it be that you have succeeded in building the foundation, big brother? Gu Feichen came back to his senses for a long time, and with a look of confusion and surprise on his face, he finally stammered and asked.

"Hmmm! I happened to get a bottle of Tsukidan, I found a random place, retreated, and the result was successful, and now I am indeed a monk in the foundation building period! Gu Changsheng stretched his waist and said in a big way.

"A bottle of Tsukidan?"

Gu Feichen couldn't believe it even more, how precious the Zhuji Dan was, he could get a bottle casually, it was the first time he had heard of it!

But he moved his lips a few times, but he still didn't say the question that came to his lips. What kind of person is his eldest brother, a fierce man who can send the monks of the Yudan period to the mouth of the Ghost Emperor, it is not uncommon to get a bottle of Tsukidan in some adventures.

"What, do you want it? Oh, it's all for you, it should be enough for the two of you to build a foundation! You have to remember to use it when you are sure, don't waste it! Gu Changsheng glanced at the other party lightly, and casually threw the remaining Tsukidan over.

"Hehe, congratulations to the eldest brother on his success! This elixir is very precious, I will take it and give it to Ruoxi for safekeeping, and talk to my eldest brother when I get back! "Ahh

Gu Feichen was so excited that when he went out, he didn't notice that he touched the threshold under his feet, and almost fell, but fortunately, he was quick and immediately hugged the porcelain bottle in his arms, as careful as protecting a little baby.

Before leaving, he didn't forget to turn around and smile at Gu Changsheng, and then cautiously walked out of the door again.

When Gu Changsheng saw this scene, he almost didn't laugh out loud.

This Zhuji Dan is indeed a treasure in the eyes of low-level cultivators in the human world, in fact, Gu Changsheng also feels the same way, but he has already passed this hurdle at this time, and he is much calmer.