Castle of Black Iron

The heavenly wind which flew at a super high speed in Ice and Fire Heavenly Wind Layer was a great test to the protective battle qi of any immortal general. Zhang Tie's protective battle qi was almost hit by heavenly wind per second. Therefore, he had to sustain great stress.

The heavenly wind was composed of the wind element, water element and fire element. Heavenly ice wind was under heavenly fire wind. They both flew towards different directions. Like two big rivers, they were neighboring each other; however, they didn't disturb each other. Such fantastic scenery in the world!

At this moment, Zhang Tie was traveling in the heavenly ice wind at more than 1,500 m per second like a dauntless man crossing turbulence. It was a great speed for common wind immortal generals.

Zhang Tie also felt the power and stress of the heavenly ice wind. The others might have to treat the power and stress meticulously; however, Zhang Tie's protective battle qi could bear it easily. The brilliant sun in his qi sea was constantly releasing battle qi so as to replenish the protective qi that he had consumed in flight. Therefore, despite being in the Ice and Fire Heavenly Wind Layer, Zhang Tie still had a strong interest in viewing the surrounding scenery.

There were many heavenly winds in different shapes in the heavenly ice wind layer, no matter large or small. The heavenly ice winds at the bottom were as small as fine sands and saber edges. As he reached higher places, Zhang Tie found the heavenly ice winds gradually become larger. Some heavenly winds could even reach hundreds of meters long which flashed by like an ice belt or a train. In the blink of an eye, they had disappeared. Some heavenly ice winds looked like fish in water, no matter large or small. They looked pretty airy. However, they also disappeared in a wink. The wonders of the Mother Nature were well reflected in the Ice and Fire Heavenly Wind Layer.

By contrast, Immortal Being in Cloud looked a bit nervous. Being a few meters away from Zhang Tie on the left, he maintained the same speed with Zhang Tie. At the same time, he kept observing Zhang Tie in case that Zhang Tie couldn't stand it.

However, when he found that Zhang Tie looked very easy, Immortal Being in Cloud became a bit frustrated. He had accessed to Mountain Ruins for more than once; however, it was his first time to see someone behave so freely in the Ice and Fire Heavenly Wind Layer.

If not that he had already stayed with Zhang Tie for a few days and had confirmed that Zhang Tie was a wind immortal general, given Zhang Tie's current performance, Immortal Being in Cloud even doubted that Zhang Tie was a fire immortal general.

"Li, doesn't your protective battle qi feel any stress? I found you're flying very easily." After a short while, Immortal Being in Cloud finally broke the silence.

"Hahaha, it's fine..." Zhang Tie replied simply.

"Li, have you cultivated a body-strengthening skill? I know that those immortal generals who have cultivated body-strengthening skills have especially strong bodies and more powerful protective battle qi..."

'Body-strengthening skill?'

After hearing the words of Immortal Being in Cloud, Zhang Tie's heart palpitated once as he nodded, "Yes, I've indeed cultivated a body-strengthening skill. My master suggested me to cultivate a body-strengthening skill; otherwise, I won't live up to my frame..."

"I see..." Stroking his beard, Immortal Being in Cloud revealed a pleasant expression which meant that "I've long guessed that"...

At this moment, a 10-m longer blue heavenly ice wind appeared over 100 m ahead like an oarfish in water. Zhang Tie became suddenly stagnated so as to avoid it; however, Immortal Being in Cloud who was pleasant just now instantly rushed in front of Zhang Tie and almost hit the long heavenly ice wind. He was scared so much that his face instantly turned pale. He then hurriedly gazed at various heavenly winds in front of him attentively instead of showing off any more...

What Immortal Being in Cloud said just now reminded Zhang Tie of a possibility in an instant——I wonder whether ice and fire heavenly winds could help me strengthen my body and stimulate the growth of King Kong Fruit or not.

Closely after that, Zhang Tie couldn't stay calm anymore as he instantly started to consider the possibility.

'Although these heavenly winds are different than the ice and fire created by my battle qi and spiritual energy, to be honest, the heavenly ice winds and the heavenly fire winds were the purest ice and fire in the world; because they were directly manifested by the two elements.'

'As long as I could control the number of heavenly ice winds that hit my body in a limited period of time, I could have a try. I would stop it once I couldn't bear it...'

Zhang Tie instantly exposed a crack on his protective battle qi on his right side. In a split second, a bit of invisible heavenly ice wind penetrated through that crack and slammed onto Zhang Tie's palm...

Despite his great physique, Zhang Tie still felt being hit by a bullet. When the bit of heavenly ice wind hit his palm, his entire arm felt numb in an instant. Closely after that, the bone-chilling cold spread over his whole body in a split second, causing him to tremble once.

This happened too fast and quietly. Even though Immortal Being in Cloud on Zhang Tie's left didn't discover that; instead, Immortal Being in Cloud was focusing on the heavenly winds ahead. Additionally, Zhang Tie's protective battle qi was a good shelter which could isolate sound. Even though Immortal Being in Cloud couldn't imagine that a "fool" dared test the power of heavenly ice wind using his own body in the world...

...

Zhang Tie took a look at the palm being hit as he found the bit of heavenly ice wind had long disappeared. His palm looked a bit red; however, it didn't bleed. If it were before, when Zhang Tie's palm was struck by such a bit of heavenly ice wind, there must have been a wound. However, after eating so many King Kong Fruits, Zhang Tie's anti-striking ability had enhanced a few levels. Therefore, he would bear the bit of heavenly ice wind which could kill any fighters below knights.

After finding that his palm was not hurt, Zhang Tie became much more confident at once. When the bone-chilling cold faded away, Zhang Tie let in a bit more heavenly ice wind through the crack in his protective battle qi and made it hit onto his hand...

10 minutes later, Zhang Tie and Immortal Being in Cloud penetrated through the heavenly ice winds layer and entered the heavenly fire winds layer. Because the direction of heavenly fire winds was opposite to that of heavenly ice winds, Immortal Being in Cloud came to Zhang Tie's right side so that Zhang Tie's sturdy frame could continue to resist the strikes of heavenly fire winds.

In the heavenly fire winds layer, there were fire rains, sabers and bolts at the bottom; as they gradually elevated, those heavenly fire winds would turn into animals like jackals, wolves, tigers, leopards and the other fierce beasts. Sometimes, they could even see hundreds of meters long fire dragons and snakes.

In the heavenly fire winds layer, Zhang Tie continued to open a crack on his protective battle qi on the left and let in a bit heavenly fire wind and have it hit onto the other hand...

It was not a real exercise, it was just his brave attempt. If this attempt was feasible, Zhang Tie planned to quench his body in Ice and Fire Heavenly Wind Layer after promoting to a semi-level sage knight. If the result proved that this idea was in vain, he would adopt the former method.

It depended on whether it could strengthen his body or not.

It only took them over 20 minutes to penetrate the entire Ice and Fire Heavenly Wind Layer. Soon after adapting to this method a bit, Zhang Tie had felt the stress on his protective battle qi disappear. He then found that he had already exited the Ice and Fire Heavenly Wind Layer. A bizarre world was right in front of him...

Everything in front of him was slowly flowing. They were mountains instead of water, no matter large or small.

After entering Mountain Ruins, Zhang Tie took a cursory look as he saw mountains everywhere within thousands of miles. There was no ground here but floating mountains which varied from hills to mountain ranges which lasted dozens even hundreds of miles. They were flowing quietly like leaves in rivers and revolving galaxies in the sky.

All of a sudden, a lightning bolt crossed the sky and hit a mountain peak. The dazzling light made the entire air zone bright and reflected some dark sunken places in the space...

If it were before, Zhang Tie might not know the dark sunken places in the space; but after the battle at Yinhai Desert, he was familiar with that thing too much.

They were space cracks...

Watching the evident space cracks in the sky, Zhang Tie's heart palpitated twice due to excitement.

After the lightning bolt, there was no rain but rumbling thunders. The mountain peak being hit by the lightning bolt also slowly changed its direction and trace and floated towards the far while pushing away two mountain peaks nearby like a boat in the water as if someone was pushing it from behind.

Zhang Tie finally knew why Old Jiang said there was no map of Mountain Ruins. In this case, map was nothing but sh*t. With one lightning bolt, the terrain in Mountain Ruins would change. Additionally, everything here was moving...

Coincidentally, an over 100 m high mountain peak being pushed away by the bigger mountain peak just now was floating towards Zhang Tie. He found that it was covered with thick moss and some verdant grasses. After scanning over it spiritually, Zhang Tie widely opened his mouth.

It was full of purest air-floating metal inside the mountain peak, which could become the key ingredient of airboat...

All the floating mountain peaks in the Mountain Ruins contained the purest air-floating metal which was grossly precious in Taixia Country.

If a fist-sized piece of air-floating metal could be taken back to Taixia Country, it could guarantee a person to live a happy and wealthy life. However, precious air-floating metal was as normal as sands in the desert here...

'F*ck!' Zhang Tie was petrified——what the hell is Mountain Ruins? How could it be so weird and filled with air-floating mountains? Additionally, there're fatal space cracks everywhere in the sky...

"Eh..." Immortal Being in Cloud uttered as he instantly flashed towards the 100-m longer mountain peak. After picking a green grass at the hillside, he flew back rapidly with excitement, exclaiming, "Haha, I'm really lucky today. Soon after entering the Mountain Ruins, I've got a nine-leaf dendrobium. It's an immortal grass. It's worth at least 1,000 earth-element crystals in the Watercloud Secret Realm of Emperor NvWa's Palace..."

Immortal Being in Cloud showed it to Zhang Tie pleasantly. Closely after that, he teleported it into his portable space-teleportation equipment as if he didn't mean to share profits with Zhang Tie at all...