Mars has an atmosphere but no ozone layer like Earth's, and its entire atmosphere is extremely low, about one percent of Earth's.

At the same time, the temperature here varies greatly between day and night, and the average temperature is even lower, and the surface temperature is maintained at an average of about minus 55 degrees Celsius all year round.

In such an environment, it is impossible to have water on the surface, because the air pressure is low, and there is no ozone layer, the water will be evaporated directly as soon as it appears, and even if there is water under Mars, the water has been frozen at low temperatures underground, and there is not much chance to appear on the surface.

Of course, things are not absolute, because if there is water on Mars, then near some volcanic areas on Mars, there can still be underground frozen water seeping out.

Lu Li drove the huge eye of the storm to move continuously, and soon came to the direction of the debris he sensed.

In the center of the eye of the storm, Lu Li descended to the ground along the eye of a super-large tornado.

Just looking at the location of the sensed debris in the center of the tornado, Lu Li's brows suddenly frowned.

"It's not as simple as I thought!"

"This fragment is deep underground, and there seems to be a huge vein of water underground."

Lu Li is extremely sensitive to the presence of water.

Just when I went down to the Martian surface, I immediately sensed the existence of a flowing underground water vein deep under Mars.

It's not ice, it's veins of water that are really flowing.

This water vein is not small, but how big it is, Lu Li can't be sure.

He only vaguely sensed that the underground water veins were very abundant.

The underground river under the Yunmeng Immortal Kingdom is nothing compared to the water veins here.

According to the scientific expedition of the previous life, the core of Mars is almost cooled, if not completely cooled.

It is precisely because of this that the planet's magnetic field collapses, and there is no chance of plate activity and ozone formation.

The absence of plate activity also means that the temperature under Mars will be very low.

So it stands to reason that if this is not near a volcano, then liquid water should not exist at all.

But the problem now is that there is an extremely large water vein under the land that Lu Li senses.

The water veins are so deep that Lu Li can't fully sense everything.

Eventually, he looked at the storm he had created and sighed helplessly.

"After doing it for a long time, I ended up working in vain, and I have to rely on myself!"

Although helpless, Lu Li did not hesitate.

Just thinking together, the next moment, Lu Li's entire snake body suddenly 'exploded'.

All the scales on the snake's body shone like silver-white blades, and at that moment, Lu Li plunged directly into the ground of Mars.

Lu Li's trip was very rude.

The moment he plunged into the ground, it could be seen that the scales on his body were like the feet of a thousand-legged centipede, providing powerful movement and burrowing ability, and the orderly movement of the scales on his body could be seen in the continuous digging of the soil, almost like a phantom.

At the same time, Lu Li went deep into the ground as easily as a dragon entering the sea.

With a constant roar of terror, Lu Li continued to go deeper into the Martian underground.

One hundred meters.

Three hundred meters.

Eight hundred meters.

......

In the end, after Lu Li seemed to be nearly 3,000 meters underground, he suddenly seemed to break through the last layer of hard rock in a certain layer of the underground.

And it was this moment.

When Lu Li poked his snake head from the rock layer into this layer of underground hollow drums that seemed to be suddenly empty, Lu Li's entire snake froze.

Immediately afterwards, when Lu Li came back to his senses, he was almost a little unable to hold back the surprise in his heart, and he called out, 'it'.

Guess what he found?

A Inner Earth! A vast inner world.

At this time, the head of the snake that Lu Li broke through the rock formation and protruded was like hanging in the sky of this inner world.

Overlooking the inner world, under the head of the serpent, there is a huge lake, which can also be called the sea.

This small ocean is about 2,000 meters high from the sky, that is, the sky of the boundary wall of the serpentine rock formation where Lu Li drilled out.

Looking down at the current inner world with a confused face, at this moment, Lu Li's entire snake was a little bad.

If this inner world is just a liquid sea and land, it won't be said.

The point is that in this inner world, when Lu Li overlooked the huge underground sea in the distance, he also saw the land in the distance.

And in the land-oriented sky, a bright light source is illuminating the entire inner world.

The light was as bright as the sun, but the temperature didn't seem to be high.

It's just that the temperature of this inner world is kept at around twenty-five degrees.

And looking at the light source that I don't know how far away, Lu Xuan suddenly made an inexplicable grunt.

There is no other reason, Lu Li clearly felt it this time.

The so-called light source that illuminates the entire inner world is the fragment of the broken Deep Blue Orb.

If Lu Li is not bad, this inner world, all the temperature, the right air, and even everything full of life are all made by it.

In the inner world, Lu Li saw a large number of birds in the sky, and now this small ocean was constantly rippling with the wind.

Under the water level, Lu Li saw strange fish jumping up occasionally.

And at the height of the rock formation that Lu Li had broken through, there were still white clouds floating in the sky.

This world has all the needs of a normal world, and even Lu Li felt that the air in this inner world contained a transcendent element similar to the qi of the immortals, but it was obviously different from the qi of the immortals.

Of course, that's not all.

When Lu Li's entire snake body entered the inner world completely, his eyes were covered with immortal qi, and when he looked at the fragment of light source in the distance with all his eyes, he suddenly saw everything clearly.

It was a completely fiery shard, resembling a broken corner of glass.

It appears to be small, but around the fragment there is a circle of light that forms a sphere that seems to be a flame rising.

And on the outside of this rising flame, Lu Li even saw a red three-headed giant bird curled up, which seemed to have a wingspan of no less than two hundred meters, just floating quietly on the periphery of the fragments as if it were sleeping.

Although this giant bird was asleep, and its breath was a few points weaker than Lu Li's, Lu Li had to be cautious at this time.

Needless to say, most of the three-headed giant bird with fiery red feathers is the master of this fragment.

And the fragment doesn't know what weird abilities it has.

For this reason, Lu Li quickly opened his mouth and spit out a cloud of smoke, creating a large black cloud of water vapor and hiding himself in it.

After doing all this, Lu Li began to think and carefully observe the current world.

"This Inner World is really huge!"

"I don't know if it's made by this fragment, or if it's originally there, but after all, it's just a small fragment of the Deep Blue Orb, even if it's supernatural, it shouldn't be possible to create such a world like this, just overlooking the ground, the ground level may exceed more than 100,000 square kilometers, right?"

Lu Li muttered, and at the same time, he instantly noticed that there were huge stone pillars and mountains connecting the rock walls above the sky all over this inner world.

These stone pillars were incomparably large, dark black, and more than five hundred meters tall alone, and one existed every kilometer or so, and stood in the empty sky, as if it was responsible for supporting the existence of this world.

Of course, on the horizon far away from the ocean, Lu Li can also see countless mountains, the summits of which are also connected to the rocky walls of the inner world.

This ghostly scene, if you want to say that there are no artificial traces, you can't believe it when you kill Lu Li.

Could it be that the ancient Martian civilization created a space underground in order to continue the civilization before the core of Mars was completely cooled?

And the fragments of the Deep Blue Orb just happened to enter here and awaken the vitality of this inner world?

Lu Li was a little unsure, but none of this mattered, just verify what you have to think later.

The most important thing now is that Lu Li feels that he may be able to sneak up on a wave while the fiery red three-headed giant bird is sleeping!