The black clouds were black and oppressive, and faintly, there was a violent thunder flashing, swimming in the clouds, and a dull atmosphere shrouded it.

In the Black Devil Ding, with Su Yu's low shout, the ball of medicinal liquid suddenly condensed, and a round elixir drip swirled in the medicine ding, and on its surface, a special rhythm flowed, and a faint spiritual light flickered.

This Transformation Pill kept colliding in the Black Demon Ding, trying to break through the Medicine Ding and escape.

The thunder in the sky was constantly brewing, as if it was looking for something.

Su Yu stood up, with joy on his face, but at the same time a little worried.

The joy is that the second transformation pill refined, there is finally no situation similar to Xiao Ling, directly transformed into a human form, although there is a little bit of spiritual intelligence, but this is just instinct, there is still a long way to go before the real birth of spiritual wisdom.

The worry is about the thunder that appears in the sky and is constantly brewing, this is the Dan Tribulation. It was the first time that Su Yu had refined the pill and gave birth to the Thunder Tribulation.

Slowly breathed a sigh of relief, stretched out his hand, and the top cover of the Black Demon Ding Medicine Ding flew away, and the Transformation Pill saw this opportunity, turned into a rainbow light, and was about to flee.

Rumble!

The thunder that was brewing in the sky seemed to have found its goal, and it was firmly locked on the moment when the Transformation Pill had just flown out of the Black Demon Ding and came to mid-air.

A thunderbolt the size of a baby's arm fell from the sky, and almost instantly, it fell fiercely, and it was about to slash at the Transformation Pill.

Behind Su Yu's body, the purple cloud wings unfolded, turned into a streamer, quickly caught up with the transformation pill, and grabbed it in his hand.

At the same time, the Zhutian Sword appeared in his hand, and three soul rings, two purple and one black, rose from under his feet. The black 10,000-year-old soul ring in the third position was even more radiant.

Sky Split!

Laugh at!

A sharp edge rushed into the sky, and a sharp sword qi slashed out horizontally, cutting through the sky, and slashing straight towards the thunder that slashed down.

The sharp sword qi and the furious thunder met in midair, and suddenly, the sword qi overflowed, and the lightning flashed.

The sword qi and the thunder were intertwined, but after a moment, both dissipated.

Su Yu's actions seemed to provoke the thunder that was constantly brewing in the sky, and suddenly, a thunderbolt descended again, blasting towards Su Yu below, or the Transformation Pill he was holding in his hand.

This thunder was much thicker than the previous one, and the lightning was even more violent.

The violent thunder and lightning didn't give Su Yu a little time to think, Su Yu only felt that the hairs on his whole body suddenly rose, and his heart was beating for a while, and the thunder and lightning fell almost instantly, coming to the top of his head, and the speed was so fast that people couldn't react.

Su Yu's expression was solemn, and at the moment when the thunder was about to fall, the first soul ring of the Heavenly Sword Martial Soul lit up.

The dark golden Heavenly Sword turned into a long rainbow and galloped back at an extremely fast speed, blocking the top of Su Yu's head.

The furious electric light flickered continuously, and the thick thunder unleashed its own fury to the fullest.

The Heavenly Sword withstood most of the thunder waiting for me, but there was still a little thunder rushing down and hitting Su Yu.

Su Yu rushed forward violently, and a little thunder power couldn't do him any harm.

This remnant of thunder power was easily taken over by Su Yu, but the Heavenly Sword began to change slightly.

As Su Yu's martial soul, Su Yu could clearly feel that under the tempering of the thunder, the strength of the martial soul of the Zhutian Sword was slowly increasing.

On the sword body, the color of dark gold became more and more obvious and increased.

Finally, after the lightning flickered for a moment, the furious thunder dissipated, and the Heavenly Sword flew back into Su Yu's hand, and the slightest arc flickered.

"The thunder in the sky is a catastrophe?!" The Ice Emperor and the Snow Emperor looked at the churning thunderclouds with some disbelief, and they clearly felt the thunder power contained in them.

As super soul beasts that have lived for hundreds of thousands of years, they have all experienced the baptism of the Heavenly Tribulation, just like the current scene, but their Heavenly Tribulation is much more terrifying than the current one.

But it was enough to surprise them.

The elixir refined by Su Yu could even attract a heavenly tribulation just like a 100,000-year-old soul beast!

Qiluo Tulip, Octagonal Xuanbing Grass, Flame Apricot Delicate Vegetables, Moyu Divine Bamboo, Sweet Potato Golden Dragon and other 100,000-year-old soul beasts did not feel it.

Although they are 100,000-year soul beasts, their true cultivation has only been cultivated for 10,000 years, and they have not experienced the Heavenly Tribulation, so they only feel that Su Yu has made a lot of movement.

And at this moment, among the surging thunderclouds, electric snakes swam away, and the third thunder did not fall for a long time, as if something was brewing.

Finally, after brewing for a while, in the thick thunderclouds, a thick thunderbolt suddenly pierced the sky, and the terrifying thunder sounded, and the sky suddenly darkened, only to see a flash of electric light.

The third thunderbolt was the size of a bucket, and the power of the violent thunder was not even close, Su Yu could feel that the air around him had become a little manic.

Rumble!

The first, second, and third, the three soul rings shone out one after another at the same time, and the Zhutian Sword turned into a long rainbow, which suddenly split into three in midair, and the three Zhutian Swords slashed out three sharp swords at the same time, tearing the void and rushing towards the thunder that suddenly fell.

The furious electric light suddenly brightened, and the whole world was darkened.

In the midst of the roaring thunder, the violent thunder power continued to refine the Heavenly Sword, but there was still a small part of it rushing out, coming towards Su Yu below.

Rumble!

The thunder fell on Su Yu's body, and the clothes he was wearing suddenly became a lot blackened, with his body as the center, all around him turned into scorched earth, and some precious medicinal materials that originally grew were also turned into ashes under the thunder.

A few subtle arcs of thunder burst out, and the spring water of the Blazing Yang Spring and the Cold Yin Spring splashed in all directions.

Suddenly, the places splashed by the two major springs formed frost one after another, or were melted into nothingness.

A moment later, the Heavenly Sword Martial Spirit returned to Su Yu's hands, and the thunderclouds in the sky gradually dispersed.

Su Yu looked at the Zhutian Sword in his hand, under the continuous refining of the power of thunder, the dark gold color on it became more and more brilliant, and around the sword body, there were subtle thunder arcs flashing.

The martial soul of the Zhutian Sword is becoming stronger, and under the tempering of the Thunder Tribulation, the quality has been improved.

That amazing edge, even Su Yu felt a little frightened when he saw it.

If the Zhutian Sword Martial Soul continues to evolve like this, it will one day evolve into an ultimate martial soul.

The ultimate gold, the sword of the heavens!

At that time, Su Yu could do great damage with a sword qi in his hand, and even in the face of a more powerful soul master, it was not impossible to challenge beyond the ranks.

With Su Yu's current strength, there is no problem in challenging Contra Douluo when the hole cards are exhausted, but it is not enough to face Title Douluo.

ABC