Three days later, the Black Iron Fortress ......

A streamer-like figure flew in the sky of the Black Iron Castle at a terrifying speed, the speed of that figure was so fast that if you stood close, it was impossible for the naked eye to catch it at all, and only in the distance could you see a thin gray line looming in the air across the sky......

"Boom ......", there seems to be thunder in the air, and on the ground where the figure flies, a bare stone hill bag more than 50 meters high is blown apart in the thunder, and the rocks splash like arrows, affecting the surrounding area, and the small mountain bag after the explosion only leaves a huge hole with a depth radius of more than ten meters on the ground.

"Boom ......", "Boom ......", "Boom ......"

The thunderous roar continued to sound, and with the loud sound of this sound, the mountain bags that flew like streamers flying like people were constantly blown up one after another, leaving huge deep holes in the ground, and the flying figure was just like a supersonic bomber, just flying through the sky, and the ground was ploughed out by him A huge trace.

Heller, Edward, Forrest Gump and Aziz stood on a peak of the Black Iron Castle Sacred Mountain, looking at the ravaged landscape of the land more than twenty kilometers away.

That piece of land was newly generated in the Black Iron Fort in the past two days, just next to the Sacred Mountain, with a total area of 2,000 square kilometers and a surface thickness of 1,000 meters.

With Zhang Tie's current combat strength, ordinary combat skills can naturally be tempered in the Soul Tribulation Realm, but kinetic energy attacks such combat skills. Especially when you need to use a special flying spear, then you can't complete this kind of training in the realm of soul calamity. He couldn't find a blacksmith shop in the realm of soul calamity to build the flying spear he needed and use it for training and experimentation, although it was theoretically feasible to do so. But Zhang Tie's time is not used to consume it like this.

And in the Black Iron Castle, the scenery on the Sacred Mountain is picturesque, the scenery is beautiful, Zhang Tie naturally can't destroy the Sacred Mountain, and within the range of leaving the Sacred Mountain, there are many people who live, those who were made into the Black Iron Castle by Zhang Tie have regarded the Black Iron Castle as their home, and the so-called don't do to others what you don't want to do to others. Even if the Black Iron Castle was his own, Zhang Tie didn't want to use it to hone his combat skills on the homes and land that others cherished, and make a mess of the surface.

Taking into account various factors, after a lapse of several years, the Black Iron Castle has ushered in a new spatial and terrain generation transformation in the past two days.

This process, in the eyes of the inhabitants of the Black Iron Castle, is a demonstration of their god's ability to create the world again.

After the elemental abyss of the Black Iron Castle opened up the elemental absorption channel with the Elemental Realm, the endless stream of elemental energy in the Elemental Realm continued to pour into the Black Iron Castle. After four months of absorption, the basic energy reserves of the Black Iron Fortress are now enough to support the Black Iron Fortress to carry out an unprecedented terrain and spatial expansion transformation.

This time, the space and terrain transformation of the Black Iron Castle are indeed unprecedented.

Elemental Abyss now transforms the base energy reserve every month. It is now possible to generate 900 square kilometers of land with a crustal thickness of 50,000 meters for the Black Iron Fortress, and if you don't need that thick crust, make the crust 200 meters thick. It can generate up to 225,000 square kilometers of land per month.

After some discussion and calculation with Heller, the new land and water area of the Black Iron Fort this time reached more than 180,000 square kilometers.

To know. Prior to this, the total area of the Black Iron Fort was only 4,000 square kilometers. This time, Zhang Tie directly increased the total area of the Black Iron Fort by more than forty times and nearly fifty times at once.

In addition to the increase in land area, the average thickness of the crust of the Black Iron Fort has also changed from 200 meters to 1000 meters now, and in the 1000 meters of the earth's crust, the upper 500 meters are fertile soil layers, and the lower 500 meters are hard rock layers, and the entire Black Iron Fort has become thicker and more dignified.

The surface area of the earth has increased by forty or fifty times, and the thickness of the earth's crust has increased by five times, such a change is indeed earth-shaking for the Black Iron Fortress.

In addition to increasing the surface area, in the new water and land area of more than 180,000 square kilometers, Zhang Tie also added a new ocean of more than 20,000 square kilometers to the east of the Black Iron Fort. Although the current ocean of the Black Iron Castle does seem a little smaller now, perhaps it is more appropriate to be a seawater lake, but for Zhang Tie, what is more important is that this small ocean can become a breeding base for all the marine plants in the Black Iron Castle, making the Black Iron Castle more vibrant.

Among the newly generated lands this time, it naturally includes the exclusive training ground with a radius of 2,000 square kilometers that Zhang Tie specially created at the foot of Shenshan Mountain.

If you look down from the sacred mountain, this 2,000 square kilometers of training ground is completely a barren land with no grass, this area is undulating, ravines are staggered, like a chessboard, and it is also densely covered with large and small high and low stone hills and mounds, in nature, it is absolutely impossible to see such a terrain, such a terrain has become the best place for Zhang Tie to test and train his combat skills.

At this moment, Zhang Tie is testing the strength of his kinetic energy attack.

Compared with the small test of the knife in the realm of soul tribulation three days ago, Zhang Tie at this time completely showed the more terrifying side of the kinetic energy combat technique.

Zhang Tie, who was wearing the Chaos Battle Armor, had reached a speed of 4478 meters per second in the sky at this moment, and at such a speed, Zhang Tie threw out the newly built flying spear he was holding in the Black Iron Castle in the past two days.

The flying spear weighing 680 kilograms left Zhang Tie's grasp at a speed of nearly 1,600 meters per second, and the speed instantly reached more than 6 kilometers per second, like a flash of fire and lightning, in a tenth of a second, it hit the ground below, and nearly 12.9 billion joules of kinetic energy strike instantly exploded a huge crater with a diameter of more than 30 meters and a maximum depth of more than 70 meters on the ground, and the invisible supersonic shock wave shook the surrounding 500 meters within a radius like a wave, dusty, and then fell, Many stones within a few tens of meters around the pit were shattered and cracked......

Throwing the last flying spear in his hand, Zhang Tie let out a long roar, his figure flashed in the air a few times, and he came to the location of the mountain where Heller and several people were.

"Congratulations to the castle lord for the beginning of his kinetic energy combat skills!" Heller and Edward bent down together at Zhang Tie. (To be continued.) )