"I'll try it!" Lin Tianhua couldn't help but walk out, holding his golden 'colored' heavy sword in his hand, and with a low shout, the incomparable metal 'sex' fighting spirit poured into the sword without hesitation, and a terrifying sword gang appeared. Immediately, Lin Tianhua let out a low shout, and the heavy sword slammed into the wall, making a sound that made people feel toothache. Everyone looked and saw that Lin Tianhua's attack only left a shallow trace on the wall.

"How is this possible? Could it be that all these metals are refined by high-level saint-rank powerhouses?" Lin Tianhua said with a surprised expression, he had already used ninety percent of his strength just now, such a powerful attack, even an ordinary ninth-order martial artist could not resist it, but such an attack only left a shallow trace on the wall, this is also too incredible! If a shield is made of this material, wouldn't everyone be able to easily resist the attack of a ninth-order martial artist?

"I'll try!" Dong Xuan's beautiful eyes flashed with a hint of curiosity, Yuchen waved his hand and said, "Don't try! These walls should be alloys smelted from some unknown metals, and the hardness is no worse than the weapons in our hands, and the material of the ground under the dust under our feet should be the same as the walls, and it is also made of the same metal! Maybe only Horcruxes can destroy it!"

Hearing Yu Chen's words, Zhan Jiu curiously squatted down and used his hand to remove the dust layer under his feet, and a metal floor of the same material as the wall was indeed 'revealed' under the dust layer.

"How is it possible? Such a huge metal space can't even be refined by the legendary god-level powerhouse, right?" Yu Xun'er said in disbelief. In the Purple Moon Heaven Continent, god-level powerhouses can refine Horcruxes, and Horcruxes are bound to be much more powerful than these metal walls, but this metal space is so huge, it is not comparable to just Horcruxes. With such a huge metal space, I believe that even a top-level Horcrux manufacturing powerhouse would never be able to do it.

Of course, a god-level powerhouse can't refine it, this is obviously something unique to scientific and technological civilization! Yu Chen couldn't help but think in his heart, but he didn't say it, but said: "Go ahead! The little guy said that the place full of energy is not here!"

Everyone nodded, and Shadow Snow led the way with a chirp, stepping on a thick layer of dust towards the big 'gate' in the distance. At a distance of a kilometer, Yuchen walked cautiously, because Yuchen always had a strange feeling, and this place should not be as dangerous as Ying Xue said.

The distance of a kilometer passed in a moment at the speed of Yuchen and the others, and when standing in front of the huge metal gate 'gate', Yuchen and the others all felt their own insignificance, this huge metal 'gate' was thirty meters high, and the width was more than forty meters. When Yu Chen and the others stood still in front of the 'door', a red 'colored' light source on a pillar of light 'door' shone out, and the huge gate 'gate' seemed to sense something, and suddenly made a rumbling sound.

It must be some kind of induction system!!!!! The huge gate slowly opened to the sides, and as the gap between the gates opened became larger and larger, Yuchen finally felt the kind of energy that Kageyuki had described.

"I feel a kind of blazing fire 'sexual' energy, but if I feel it carefully, it is not quite the same as my fighting energy!" Dong Xuan was the first to speak.

"Fire belongs to 'sex' energy, how can I feel that the trace of energy coming from it is similar to my Da Heitian Dou Qi?" Zhan Jiu said with a strange face, his fighting spirit completely belongs to the mutated fighting energy, and the demon core that also belongs to the 'sex' almost does not exist, that is to say, his cultivation can only rely on himself step by step, at this time, he suddenly felt that there was an energy in the Dao that seemed to belong to the same 'sex' as his fighting spirit, he naturally felt weird, but at the same time, it was more of a surprise!

Yu Chen felt the pure energy coming out of it, and his heart was also shocked, cultivating in this kind of place, the growth rate is probably thousands of times faster than outside!

"Let's go in!Everyone should be careful!" Yu Chen said, and everyone suppressed the 'agitation' in their hearts and nodded. At this time, it is superfluous to say anything, Yuchen is the first to walk into the other side of the 'door', when Yuchen walks into the big 'door', the first thing he sees is a huge underground space, when he sees this space, Yuchen also confirms his thoughts for the first time.

After entering the big 'door', there is an arc-shaped corridor, the length of the corridor is not long, only about 100 meters, when Yuchen and others cross the arc corridor of 100 meters, a scene that is enough to make people's hearts want to jump out appears in front of everyone's eyes.

What appeared in front of everyone's eyes was a huge indescribable space, and around this space, there seemed to be a lot of dense rings, and these rings surrounded the huge space one by one, each of which was like a floor, and Yuchen and the others were on one of the floors at this time.

"That seems to be far away!" Looking at the blurred wall opposite, Zikong Bing couldn't help but say.

"With the eyesight of our ninth-order martial artists, we can only barely see a trace of it, and I am afraid that it will be ten thousand meters away from here to the opposite side!" Dong Xuan said with a long exhale.

"The diameter of this space is 10,000 meters......! How is that possible?" said Zikong Bing Rangran in disbelief. What is the concept of space with a diameter of 10,000 meters, you can imagine that on the earth, the main road of an ordinary medium-sized city is only seven or eight kilometers long, 10,000 meters, which is equivalent to the diameter of a city.

"The area here is too big, you can build a dungeon!" Dong Xuan said with a shocked expression.

"I'm afraid it's not realistic, look at that huge semi-circular arc in the center of the space!" Yu Chen said, and everyone took a closer look, only to see that there was indeed a semicircular giant arc blade on the ground of the giant space center.

"Look at it again!" Yu Chen said, and everyone followed Yu Chen's point, only to see that there was a giant arc blade at the top of the space that was exactly the same as below.

"If I'm not mistaken, this should be a special energy reactor!" Yu Chen said lightly.

"Energy reactor?" Hearing the words in Yu Chen's mouth, Zikong Bing and the others all 'revealed' their incomprehensible 'color', Yu Chen smiled and said, "You can think of it as an energy reaction site!" Ying Xue said that there are many energy crystals here that can help it grow quickly, if I guess correctly, the energy that can see this reactor, and the energy 'waves' we feel at this time are the 'waves' emitted by those energy crystals!"

Listening to Yu Chen's words, Zikong Bing and the others 'revealed' thoughtful expressions one by one, obviously not understanding Yu Chen's words. Zikong Bing was even more curious: "How do you know so much?"

......

To be continued! This chapter is made up the day before yesterday! Today, it can be uploaded at about eight o'clock in the evening!