The Space-Time Dragon King was encircled, and in just a moment, there were a few more mecha around, they were covered in scars, and black mist and black light poured out from the scars, plunging the underground hall into darkness, almost a closed space.

"Come, Blue Mountain Seal." Li Yuan snorted lightly, his will merged with the mecha, and he quickly slashed out eighteen swords, the blue light of the sword shone brightly, with a fierce killing intent, trying to make a gap in the encirclement.

The sparks exploded, and just as the Longyuan Great Sword was about to break through, it encountered a powerful obstacle.

"Buzz, buzz, buzz......"

Li Yuan looked in shock, only to see that the Long Yuan Great Sword was tightly restrained by five circles of black mist, and black light leaked from the black mist, spreading to the sword body in the form of blood vessels.

"What the hell?" Long Yuan's great sword was invaded by black light, and there was always an ominous premonition, Li Yuan concentrated on roaring: "The black magic cube shook me. ”

"Dangdang, dangdang, dangdang......"

The Black Rubik's Cube caused a spatial shock, and it was transmitted to the Longyuan Great Sword along the arm of the Space-Time Celestial Dragon King. The sword body hit the black fog ring, making a crisp bell ringing, and the black light that clinged to the sword body suddenly stopped, and the black mist waved out of the sword body.

"What a tough thing." Li Yuan was within the range of the mecha, frantically increasing the frequency of spatial tremor, and transferred all the shock force to the Longyuan Great Sword, only to hear the sound of "Dangdang" non-stop.

"My grandmother, these black fog circles are rich in dark matter, producing a strange dark energy, master, you must not use the black Rubik's Cube to absorb them, their nature is very mysterious, and they are really incomprehensible." Elizabeth reminded him, and the nearby mecha launched an attack on Li Yuan, and the Space-Time Celestial Dragon King shook his arm while shifting his form and transposition to dodge.

I didn't expect to be so risky when entering this underground hall.

With a loud sound of "dang", the five circles of black mist that bound Long Yuan's great sword dissipated, dissipating along with the black light that clinged to the sword body.

"Use the Shattered Star Dust Sword."

Li Yuan put away the Longyuan Great Sword, took out the Shattered Star Dust Sword and swept it around, and immediately countless bright lights collided with the black fog and black light, inspiring the sky to spark.

Drifting away by Mars, the shadow is reflected.

"The number of enemies has increased again, and when I see thirty-five mechas, there are still things coming in the shadows, and they can't be surrounded." Li Yuan has rich combat experience, and he immediately threw out the Shattered Star Whisk Dust Sword to open the mecha defense to the limit, not to destroy the enemy, but to destroy the surrounding dark matter closed environment.

"Boom"

After the dull sound, billions of starlight exploded, and the light swept outward. In an instant, a large section of the haze around him was dispelled, and a gap suddenly appeared in the space that seemed to be completely closed just now, and Li Yuan was waiting for him at this moment.

The Space-Time Celestial Dragon King stepped slightly, as if fused with the exploding starlight, and quickly broke out of the dark matter encirclement and escaped.

The good guy used the Shattered Star Whisk Sword in order to break through, and even Li Yuan felt extravagant. The Poison Yuan Stale Sword no longer exists, and there are currently four sharp swords hanging on the top of the iceberg of the Black Cube, the Thunder Feather Instant Killing Sword, the Electric Vein Violent Killing Sword, the Chaos God Killing Sword, and the Causal Extinction Sword.

The space-time Celestial Dragon King broke out of the encirclement and did not exit the underground hall, but continued to go deeper, because the exit of the hall had been blocked by the dark matter realm, and even had a tendency to spread to the surface.

Li Yuan entered the depths of the underground hall and found that there was a deep passage to store zài, and he was very careful. There are a lot of weird things here, there are broken strange mechas, there are fog circles that can wrap around the Longyuan Great Sword, and there are black lights that spread to the sword body, it took a lot of effort to break free, and it was definitely not a simple thing.

With so many oddities, it shows that the people of Ilin are hiding a big secret here, and it is best to find out.

At the moment, he couldn't use the Longyuan Great Sword, so he took out the Lei Yu Instant Killing Sword. Li Yuanyi was bold and drove the Space-Time Heavenly Dragon King to rush towards the passage quickly.

On the way, they encountered those strange mechas, but fortunately, they were alone, and they failed to form a group to form a dark matter confinement realm.

In terms of sword speed alone, the Space-Time Celestial Dragon King is much stronger than these strange mechas, as long as Li Yuan is not surrounded by them, it is easier to deal with. And the Thunder Feather Instant Killing Sword is extremely powerful, and it can pierce the fuselage in an instant, but no matter how hard you try, you can't completely cut the mecha. It felt like the greatsword cutting into the mech, like entering a viscous liquid, indicating that there was something else inside the mecha.

"Weird, so weird, I've never been in such a weird situation." Elizabeth actively collected a number of mechs, and it is still impossible to deduce the cause of these mechas.

"Oh my god, shouldn't we be thankful for these things?" The Space-Time Dragon King entered an underground hall again, there were traces of battle everywhere, there were strong spatial fluctuations left in the air, and there were brilliant treasures scattered on the ground.

These "treasures" include silver scorpion tails, golden horns, purple jawbones, green eyes, and unique light cocoons, all of which are trophies left behind by the old master of terror.

Judging from the traces left in the vicinity, it has just experienced a very ferocious battle. The veteran Lord of Terror and the Ancestral Beast Legion who were in charge of guarding this place were all wiped out, and the attackers were definitely those strange mechs.

Li Yuan couldn't help but be afraid for a while, maybe now was the weakest moment for those mechas, so he was able to escape the siege when he entered.

The Space-Time Celestial Dragon King floated forward without sticking, and it was like a pair of big hands behind him, grabbing the "loot" from the hall, causing the hall to immediately dim and lose the light of the treasure.

"Hehe, the harvest is really good, thirty-three demigod treasures, ninety-eight rare materials, and a large amount of xenogeneous energy remaining in the silver scorpion tail and purple jawbone, as well as sixty-two top-grade light cocoons. The key is to pick it up for nothing, which I like the most. Elizabeth was almost grinning to the base of her ears, and she was jumping with joy, and her face was like a daisy blooming.

However, this is just the beginning, and then nine passages and eight underground halls are all the same scene, and "treasures" are everywhere.

The more you go to the passages and halls deep underground, the more "loot" falls on the ground, and even five divine treasures with a faint aura of Ilin universe have been found, and the number of demigods has increased to five hundred in one fell swoop. I don't know how many old horror lords have died here, some of the silver scorpion tails and purple jawbones that should have survived were shattered, and black spots appeared on the surface of the fragments, which looked terrifying.

"As far as I can tell, our siege has weakened the city's defenses, and those strange mechs have seized the opportunity to break out of their cages and attack the Lord of Terror who is guarding this place."

Elizabeth reversed the battle scene according to the traces left in the hall, and said: "In the fierce battle, there are many terrifying lords who have been ordered to go underground, and their main intention is not to intercept the strange mechas, but to go deep underground with a ruthless heart. There must be something that attracts them to the Irin people who want to take it back at all costs. Just then, we caused a cluster of ancient behemoths to explode on the surface, collapsing the passage that ascended to the surface. The Lord of Terror, who came down first, received no follow-up support, and as a result, the entire army was wiped out. ”

"Well, that's how it should be, maybe these Lords of Terror are close to success, but they fall short at the last moment." Li Yuan nodded.

The traces of the battle are very obvious, and Elizabeth has no problem pushing back the battle scene, and the Lord of Terror is indeed fighting at any cost after he enters, which is much more tragic than attacking the ancient beasts.

Continuing to go deeper, I encountered a thick black fog, and I couldn't make out the direction when I fell into it. Suddenly, a mecha appeared, green light appeared from his eyes, and said, "You are finally here, the young man who dares to attack the Sky Survey City."

"Hey, you're it?" Li Yuan was very surprised that there were normal mecha in this ghost place. However, there are a lot of rifts on this mecha's body, and a thick black mist overflows from the rifts, giving people a very dangerous feeling.

"I am the Divine Heavenly King Goethe, who once assisted three generations of demon emperors to ascend the throne, and when I traveled to the Void Plain, I was captured here by the powerful Immortal people and suppressed for many years."

The voice from the mecha was very weak, and he said intermittently: "At first, they wanted to study the evolution of our human mechas, but as the old enemies of the Illin people, the Black Death Cosmic Sect scouts, entered the Void Plain, they suddenly changed their research plan, captured many black death species, forcibly stuffed them into the mecha, and used the human body as a container to unfold a very terrifying reality.

The people of Yilin have discovered that the body radiation of a small number of mecha kings can trap the black dead species and promote genetic mutations, and there is a certain probability that they will become a community that blends with each other. So they intensified their efforts to make the human body and mecha turn into freaks.

If the real yàn succeeds, the Ilin people will use humans to deal with the black dead species, so they have accumulated great strength in the Void Plains, but they have not started the battle for a long time.

Until some time ago, the real yàn made the latest breakthrough, and I guess they couldn't hold back any longer and had already started a war against humanity. I didn't expect that when I was in a daze and was about to lose consciousness, I would meet a ...... who had the ability to challenge the main city of the Illin."

Without waiting for the other party to finish speaking, Li Yuan suddenly attacked with a sword. Almost at the same moment, the Divine Heavenly King, who called himself Goethe, also blasted out his mecha greatsword, and the thunder and lightning collided with the black light, shaking a space away.

"Imp, how did you find out?" Goethe asked angrily.

"How did you find out?"

Li Yuan sneered: "Hehe, it seems that it has been closed here for a long time, which makes your brain not very bright, or the current Goethe is just a distorted real product." You shouldn't talk so much, and report yourself to put yourself in a high position. At my level, do you care that you are the third-generation auxiliary minister of the Demon Kingdom?

Speaking of which, I offended all the royal families of the Demon Kingdom, and I was stupid and bold at the time, and I was lucky. Exploring the Tomb of the Six Emperors of the Demon Blood Star, Empress Andrea once bombarded me with the Nine Huang Wheel, and the powerful sword of time that Your Excellency left in the Nine Huang Wheel is still fresh in my memory, if I hadn't shown Qin Lanque's coffin to block it, I'm afraid I would have died.

There is also the old madman who burned out the prison, he was also assassinated by you and suppressed.

I calculated the time span of your activity, and found that it was much longer than other Divine Heavenly Kings, and combined with your attainments in the time realm, it is estimated that you have a way to continue your life through a mecha Heavenly King with similar attributes. In this way, wouldn't the Space-Time Dragon King be the best choice for you? ”

"Hahaha, since you're here, do you think you still have a chance to leave?" Goethe laughed, he had waited for so many years, and how could he let go of the rare opportunity in front of him? A ghost is a ghost, very tender.