The giant cave is too huge, if it flies down at its center point, the alien can't be seen at all, and of course it can't be attacked, so it's absolutely safe.

It continued to fall for nearly two hours, and it was initially estimated that it had penetrated nearly two thousand miles into the ground, but it still did not reach the ground.

"It's a miracle. Zhan Lan looked at the galaxy above his head and muttered.

"If this is on Earth, I'm afraid we have all encountered magma, and the planet here is really different from the Earth. ”

"Even the temperature hasn't changed. Chu Xuan was very careful, and also noticed the temperature: "From the beginning when we came down to now, the number of aliens we encountered should have reached tens of thousands. ”

"Then this is the alien nest and didn't run away. ”

Three hours.

Four hours.

Six hours.

The excitement was gone, and even if the huge cave still looked bottomless, it couldn't surprise everyone.

Lin Feng took this group of people to fly for a full ten hours, and if you convert it into distance, it is almost ten thousand kilometers away from the planet's surface, which is a terrifying depth.

A black shadow suddenly appeared below, and everyone's expressions were suddenly shocked, Feiyun Satin stopped, and it should be a building below.

"What is this? Spire?"

"Looks like the spire of a tower?"

"Isn't there a pyramid down here?"

"What is this spire made of?"

"It's stones, it's just that these stones are harder, but no matter how hard they are, they're still stones. ”

Lin Feng said lightly: "This is iron and stone, it is a first-order material in the world of cultivating immortals, and it is generally used as the base of buildings, modern people need to build a base with reinforced concrete to build a high-rise building, and immortal cultivators use iron and stone." ”

Lin Feng had been digging iron stone in the Half Realm Ghost for almost eight years, so he recognized it at once, and the material of the spire was iron stone.

Continuing down, this building that is considered to be a tower gradually shows its original appearance, everyone really guessed correctly, this is indeed a tower, but also a giant tower, similar to the structure of the pyramid, the bottom of this giant tower even filled the entire cave space, the diameter of the cave is about 100 kilometers, that is, the diameter of this giant tower is also 100 kilometers.

"A giant tower with a diameter of one hundred kilometers, and it is still built of iron and stone, it can't be a giant tower built by monks, right?" Lin Feng felt in his heart.

A giant tower that may have been built by a monk, and countless aliens, Lin Feng had a bad association, if these aliens were murderous creatures raised by monks, it would be terrible.

"No, it can't be, these aliens don't have the aura of a monk, they don't match at all, so it can only be a coincidence. Lin Feng then shook his head.

There are four giant gates on all sides of the bottom of the giant tower, and the aliens go in and out of these four giant gates, not knowing what they are busy with, Lin Feng turned on the Yuan Shen reconnaissance, and then found that there was a strange force field on the surface of the giant tower that was holding his reconnaissance, so that his Yuan Shen could not go deep into the tower.

This situation is the first time Lin Feng has encountered it, Lin Feng's face is much more solemn, his divine sense is equivalent to the eyes of a monk, his divine sense cannot be reconnoitred, and the monk is like a blind man.

Lin Feng didn't take the risk, but after groaning, he came to the surface of the giant tower, and slashed with his sword, although the iron stone was a first-order material, facing the fourth-order Xuanyuan Sword was also like paper paste, and the large piece of iron and stone was cut off by Lin Feng, and a huge crack was quickly cut.

The Yuan Shen reconnaissance was turned on again, and Lin Feng felt it, the force field of this giant tower seemed to have weakened a little, and the interference against his Yuan Shen was not so serious.

"Does this unknown force field have anything to do with the integrity of the tower? So I'll fold the tower and see what's underneath. ”

Hundreds of swords, swords and swords were staggered, Lin Feng dismantled the nearby tower surface, and at this moment, a roar came from the tower.

The roar was like thunder, startling strong air currents, these air currents rushed out from the place where they were slashed by the Xuanyuan Sword, and they roared, almost like a dozen hurricanes blowing through, and Lin Feng even felt that the entire giant tower was shaken a few times by this roar.

When Zhan Lan, Zheng Zha and the others heard this roar, they snorted, their faces suddenly turned pale, and those novices were even more unbearable, covering their heads one by one, hugging their heads and shouting.

Lin Feng waved his hand and sent out an aura, protecting everyone in the circle, and looked at the bottom of the tower with a solemn face, as if he saw a behemoth.

"What creature's voice?"

"It's terrifying. ”

"I felt like my head was about to explode. ”

"It can't be the Alien Queen, right? But is the Alien Queen so powerful?"

"Girl, what's down there?" asked Zhan Lan.

Lin Feng thought for a while and said, "It should be an alien, but this alien may be relatively large." ”

"It's too loud, it's very loud, isn't that kind of sound a little guy can make?"

"Well, it's definitely a behemoth. ”

"I have a feeling that the tower is supposed to be for it. ”

"God, don't scare me, how big is this giant tower? How many miles must it be used to lock it up? How can there be such a giant beast?"

Lin Feng ignored these people, but raised the Xuanyuan Sword with a solemn face, and a sword shot straight to the bottom of the tower, maybe it was really a giant beast underneath, but if even this sword couldn't stop it, what difference did it make in terms of body size?

The hard iron stone was as thin as paper in front of the Xuanyuan Sword, and it was continuously broken by the Xuanyuan Sword, and finally reached the bottom of the tower, through the space broken by the Xuanyuan Sword, Lin Feng saw that there was indeed a huge incredible alien there.

This alien body lay lying there, every time it opened its mouth to breathe, it would form a hundred-zhang whirlpool in front of it, and the diameter of each of the rib spurs on its back was more than 100 meters, and its entire body was protected by thick bones, like a mountain, giving Lin Feng an indestructible feeling.

"I'll go, big guy. Lin Feng was amazed, but the Xuanyuan Sword did not hesitate to stab the alien, with a bang, it penetrated through the handle, and entered the armor closely, and then the tip of the sword came with a sluggish feeling, this huge alien exoskeleton was extremely hard, even the Xuanyuan Sword was a little difficult to break, Lin Feng's heart moved, and the Xuanyuan Sword turned into a stab in the alien's body, and finally drew a huge wound and flew back into Lin Feng's hand.

The huge alien seemed to feel something, raised his head, and let out another roar in the direction of Lin Feng, Lin Feng noticed that the limbs of this huge alien were actually locked by thick chains, and there were also chains on the neck and tail, making it difficult for the giant alien to make big moves, these chains have been deep into the ground, I don't know how deep, at this time, the chains are being bitten by countless aliens, and there are several places where they have obviously become thinner.

There are also many aliens who grab the mineor-eating beast and come to the mouth of the giant alien and give the mineor-eating beast to the giant alien to eat, and these aliens are feeding the giant alien!!

Seeing such a situation, Lin Feng instantly understood.

"Someone locked this giant alien here, and built a giant tower to guard it, I destroyed the giant alien, so I alarmed this giant alien, maybe even the person who guarded the alien was also alarmed, but it is very strange that since you have the ability to suppress this giant alien, why do you want to leave a small alien? Those chains have been corroded by the body fluids of the alien, even if I don't come, this giant alien will be able to get out of trouble in a few decades. ”

"I don't know who suppressed this giant alien, but while it can't move, let's kill it first. ”

Lin Feng has always been very straightforward in this kind of thing, and was about to re-sacrifice Xuanyuan Sword Xuan to kill the huge alien, but he suddenly felt something, and hurriedly looked at the sky, and saw a vortex appear in the sky, and then, a spaceship flashed out of the vortex.

(Tianjin)