After all, the Nine Thunder Pool is the most abundant place for thunder in the entire underworld, and it is also the most dangerous place.

Su Zixuan also remembered what Yu said.

"Boy, that's a good place!"

"There can be washed away the evil qi in your body, not to mention that you can also forge the power of the body, if it is better, you can be promoted to the Tribulation Period, but that place is also a rumor, I don't know if it's true!"

Su Zixuan thought about it at this time, but there was some truth.

Su Zixuan said that his body flickered, and he flew to the side of the fourth yellow thunder pond and looked towards the yellow thunder pool.

In the thunder pool, a series of yellow arcs like a spirit snake beat, these arcs are much thinner than the three white, red and orange thunder pools in front, the yellow arcs are intertwined, making the sound of dragons and phoenixes roaring in unison, which makes people's hearts beat.

Su Zixuan also took a deep breath, then gritted his teeth and flew into the yellow thunder pool.

At this moment, yellow lightning immediately swarmed in, entangled his body in an instant.

The yellow arc hit him, easily tearing out long and deep wounds, each yellow arc was like a thunderbolt flying sword.

Su Zixuan couldn't help but let out a feeling of discomfort, and there was a hint of surprise in his eyes.

But it's okay, just like this, the twenty-first day has passed, and Su Zixuan also feels a lot more relaxed.

Then he looked towards the fifth green thunder pool.

This green thunderbolt was several times stronger than the colored thunderbolt in front of him, and his incomparably tough body, which had been forged by the Immovable Ming King's Immortal Body Sealing Technique, was almost useless in front of the green arc.

In the blink of an eye, his body became tattered, and he could even see the white bones of Na Sensen.

Those green thunderbolts also directly invaded his body, rushing towards him like a roar of waves, and where the green thunder and lightning passed, all the meridians and flesh were torn apart, and blood burst out from all over his body, as if he was being cut by a thousand knives.

Su Zixuan also felt pain.

At the same time, all kinds of strange lights flashed on his body, and those strange runes of the Immortal Sealing Technique appeared again, much clearer than before, revolving around his body.

Looking at this, Su Zixuan also had the courage to continue to accept the refining of thunder, otherwise he estimated that he would have chosen to give up at this time, after all, the Nine Tribulation Heavenly Thunder Body was just a rumor.

Suddenly, the muscles on Su Zixuan's body swelled involuntarily, and the blood veins in his body were surging wildly, as if they were about to burst out of his body, making the injuries on his body more and more heavy.

In such a situation, he was also a little confused, and there was a look of anxiety in his eyes, and his body was a little unbearable if it went on like this.

However, if you want to use the power of the thunder pool to wash away the evil qi in your body, you can't try to resist the power of these thunderbolts.

There was no other way, Su Zixuan could only continue to grit his teeth and persevere.

Twenty-eight days have passed.

Su Zixuan gritted his teeth and went to the cyan thunder pool again, and it was really more dangerous every time......

Seven days of each thunder pond passed, and slowly the sixty-third time passed.

Su Zixuan also activated the Immortal Body Sealing Technique and the Immovable Ming King Technique, only protecting the five internal organs of the body, allowing the black arc to swim all over his body.

At this moment, there were also earth-shattering changes on his body, and several thunderbolts flashed on his body and then merged into black thunder.

Black arcs raged in his body, and at the same time, black arcs of lightning penetrated into the holes in his body that had evil spirits.

Su Zixuan's body trembled, and a thick black gas appeared on the surface of his body, and then it gushed out.

After the refining of this black thunder pool, it was much faster than the previous thunder pools, and the evil qi of his body and knots also decreased rapidly at a speed visible to the naked eye, almost disappearing.

With the gushing out of these evil qi, Su Zixuan's whole person emerged a sense of relief from the inside out, as if he was getting rid of the burden of ten thousand catties a little bit.

Su Zixuan's heart also moved, and with a wave of his hand, the golden light flashed in his palm, and there was an extra golden elixir with dense golden lines on it, faintly forming a golden dragon-like pattern.

This is a special elixir of the advanced tribulation period of the merger period, its name is called the Tribulation Pill, which is of wonderful use for the physical cultivation of the advanced tribulation period in the late stage of the merger, it is the one that Xuzun spent many years preparing for Su Zixuan to prepare for you, because the medicinal materials cherished the time of the Xuzun also refined one and the last Taiyi Pill.

Soon, he raised his head and took this pill down, and then immediately closed his eyes and sat down in the thunder pool.

Yin Sheng looked at the visions in the black thunder pool, and his brows frowned.

"Brother Su, do you really want to risk your life like this?"

Yinsheng also said.

"Having said that, but now that the situation is changing rapidly, whether there will be a chance at that time is still a matter of two words, I have gone through so many dangerous battles before to get here, how can I be willing not to bet on this?"

The corners of Su Zixuan's mouth hooked up a faint smile, and said to Yinsheng.

Soon he closed his eyes again, not thinking much about it.

At this time, Yinsheng also gave up directly after passing through the seventh thunder pool, because he knew that he would not use the thunder pool to fall in those days, and he would also be fallen, so he stopped.

Time passes slowly.

The thunder flashed, and the muscles and veins in the body were several times stronger than before, and the evil qi in the body was cleared.

The black thunder completely covered it, and Su Zixuan also felt that it was full of power, whether it was the power of ** or the power of the soul, it was strengthened several times.

"Hmm...... Success or failure is here, if you can use the Immortal Sealing Technique on this nine-colored thunder in turn, you should be able to advance to the Tribulation Period, even if it's just **!"

Su Zixuan muttered.

He also knows now that this is the opportunity, and now that his soul has reached the tribulation period, and he and I have found that his soul power is also several times stronger than others, even if it is compared to the Meditation Venerable, it is a few points stronger.

Immortal sealing technique is to follow these runes according to the three hundred and sixty-five acupuncture points of the whole body, and the three hundred and sixty-five acupuncture points also refer to these, the acupoints are located in the meridians, in the human body there are twelve meridians of the five internal organs and six internal organs, there are twenty-four symmetrical left and right, there are Ren veins in the center of the front of the body, and there are Du veins in the center of the back of the body, each with a special meridian, which runs through the whole body, and the human body acupoints arranged on these fourteen meridians are called positive acupoints.

There are a total of 365 seals one by one, and then to achieve physical immortality, and for each step, thirty-six acupuncture points are added.

What he had to do now was to seal the nine-colored thunder into these tricks little by little

Thinking of this, Su Zixuan couldn't help but nod with satisfaction, because he had already tried it, and it was completely feasible, that is, he continued to carry out the immortal sealing technique he had cultivated......