The layers of thunder light are like the sea, the levels of thunder light are like mountains.

Between the sky and the sea, endless thunder light shines, illuminating the sky and the vast sea in white brilliance.

Ao Yi and Gui San waited for several hours, yet the momentum of the tribulation thunder grew even stronger.

Even from thousands of miles away, they felt extremely uncomfortable. The primordial qi in the air was unusually restless, and the raging Supreme Yang Thunder Power permeated all directions.

Both Ao Yi and Gui San had crossed through the Nine-Tiered Thunder Tribulation, and now their divine souls felt the threat of the tribulation thunder.

"The duration of the tribulation thunder is too long, something's wrong..."

Ao Yi stared at the intense thunder light in the sky, his face full of disbelief.

The Dragon Race was naturally able to control thunder, thus they could easily cross the thunder tribulation. But the power of the tribulation thunder before him grew stronger and stronger, to the point he could barely withstand it.

This was extremely abnormal!

Gui San pondered for a while and said, "He probably accumulated several thunder tribulations and triggered them all at once?"

In the history of the Immortal Realm, there are records of several super strong individuals crossing through thirty-six layers of thunder tribulations at once.

Of course, this is just an ancient legend. No one can say for sure if it's true.

For ordinary cultivators, crossing one thunder tribulation is difficult enough. It's impossible to accumulate several thunder tribulations and trigger them all at once.

Doing this would only increase danger, without any practical benefit.

"That could be."

Ao Yi nodded, "But why would he do this? Does he really think he's invincible?"

Ao Yi still couldn't comprehend the significance of Gao Xuan's actions.

Unfortunately, the tribulation thunder was too violent, and through layers of thunder light, he couldn't see what Gao Xuan was doing inside.

In truth, Gao Xuan did nothing, just stood there and let the tribulation thunder strike him.

By refining the Innate Primordial Chaos Dao Body with the Celestial Sound Daoist Hat, he had reached a limit.

Thus, he thought of refining the Innate Primordial Chaos Dao Body through tribulation thunder.

At this stage, he surpassed the limits of the Cyan Celestial Realm's laws in every aspect. Tribulation thunder couldn't enhance his power, only strengthen his foundation.

Tribulation thunder is also the most important method through which heaven balances wise life forms. Excessively powerful divine soul power will result in the triggering of tribulation thunder.

Gao Xuan continually released his divine soul power, inciting the explosion of tribulation thunder.

He crossed one tribulation thunder, then triggered all the subsequent layers of tribulation thunder.

Tribulation thunder refined the body and divine soul comprehensively, removing the yin qi from the divine soul, and purging the filth in the body's bloodline.

The Primordial Qi resonance of the Celestial Sound Daoist Hat was subtle and intricate, but lacked Pure Yang Qi. In this aspect, it was far inferior to tribulation thunder.

Gao Xuan's divine soul and body were refined by tribulation thunder, ridding them of filthy yin qi, while absorbing Innate Pure Yang Qi.

Innate Pure Yang Qi contains endless vitality, which is the foundation for cultivators to achieve immortality.

The Dragon Race and other divine beings have long lifespans because their divine souls are naturally rich in Innate Pure Yang Qi.

For Gao Xuan to attain immortality, he too must continually extract Innate Pure Yang Qi from the tribulation thunder, extracting endless vitality.

Only by achieving Daluo Golden Immortal, where the divine soul transforms into Pure Yang and Pure Yang Qi becomes ceaseless, does one no longer need to cross tribulations.

Gao Xuan triggered the Ninth Tribulation Thunder in one go, with his divine soul absorbing a large amount of Pure Yang Qi.

According to his calculations, it would be enough for him to live for another seven to eight thousand years. Because his Innate Primordial Chaos Dao Body harmonizes as one, with very low consumption.

With the same amount of Pure Yang Qi, he could live even longer.

After the Ninth Tribulation Thunder ended, Gao Xuan triggered the Tenth Tribulation Thunder.

By then, his body was almost fully refined. Gao Xuan began to activate various magical artifacts one by one.

Jun Heaven Wheel, Celestial Sound Daoist Hat, Five Elements Celestial Net Divine Light, Eternal Celestial Dragon Claw, Celestial Dragon Eye, Hongyi Sword, and even Nine-Revolutions Divine Cicada were all refined using tribulation thunder pure yang power.

Among these magical artifacts, the Jun Heaven Wheel and Celestial Sound Daoist Hat he crafted were clearly a level lower.

Five Elements Celestial Net Divine Light, Eternal Celestial Dragon Claw, Celestial Dragon Eye, and Hongyi Sword were all of earth artifact quality.

Having absorbed the divine soul essence blood of many dragons from the North Sea Dragon Race, the Celestial Dragon Eye was now the most powerful. But in terms of combat power, Hongyi Sword was still superior.

The Eternal Celestial Dragon Claw was somewhat mixed, with quality not considered too high. Though useful, its upper limit was low.

For now, the Five Elements Celestial Net Divine Light showed no possibilities of improvement. Unless the Innate Five Elements Divine Light is truly found.

However, even the worst Jun Heaven Wheel was sufficient to easily handle the Tenth Tribulation Thunder.

For these magical artifacts, tribulation thunder of this level was no more than a cleaning and maintenance process.

However, Gao Xuan found the Eternal Celestial Dragon Claw especially attracted tribulation thunder. 𝓯𝙧𝙚𝒆𝙬𝙚𝒃𝙣𝙤𝒗𝓮𝓵.𝙘𝙤𝙢

Because the Eternal Hell Seal within the Eternal Celestial Dragon Claw concealed abundant Ultimate Yin Filthy Qi.

These Ultimate Yin Filthy Qi couldn't connect with the external primordial qi within the Cave of Ten Thousand Demons, thus couldn't trigger tribulation thunder.

However, Gao Xuan actively stimulated the Eternal Celestial Dragon Claw within the tribulation thunder, which caused the Ultimate Yin Filthy Qi to trigger a violent reaction from the tribulation thunder.

After the twelfth thunder tribulation, it directly triggered the thirteenth tribulation thunder.

Gao Xuan could sense that the center of the tribulation thunder had already opened a pathway directly to the upper celestial realms.

The Immortal Realm is divided top-down into Ninefold Celestial Realm.

However, one cannot reach the upper celestial realms just by ascending through the sky.

Between different celestial realms, there are endless void barriers.

In Gao Xuan's view, the Immortal Realm's Ninefold Celestial Realm can be completely regarded as nine planets, with distinctions in hierarchy, yet extremely distant from each other.

The path to the upper celestial realm is undoubtedly through tribulation thunder.

The Thirteen-Tiered Tribulation Thunder, the Immortal Realm Law will naturally connect to one higher celestial realm, guiding the stronger thunder power.

This path to the upper celestial realm thus opens.

For cultivators to ascend, they must sever the tribulation thunder at this time and charge into the passage, allowing them to reach the upper celestial realm.