After the True Gang Realm Martial Dao Cultivator opened up the lung veins, he only used a trace of Gang Qi to operate in the lung veins, and the internal breath could be endless.

As long as the Gang Qi in the sea of dantian qi is not exhausted, the martial arts monk will not suffocate to death.

Lu Chen reversed the refining of Zhengang, and when he broke through to the Zhengang realm, he first cultivated the Heavenly Position Meridian Diagram, and the first meridian opened up was the lung vein, so that he would not suffocate in the quicksand.

Under the sea of golden sand, a quicksand flowed like a stream of water, and there was a black-clothed figure among them, which was Lu Chen.

As soon as he sank into the sea of sand, his mind moved, and a wisp of power to know the sea escaped, quietly probing the movement above the sea of sand.

At the same time, he heard a loud roar coming from above the sand sea.

When the power of the sea was probing upward, he felt a powerful spiritual power extending downward, and it was obvious that this spiritual power came from Yan Yu.

Skillfully avoiding Yan Yu's spiritual power, Lu Chen's sea perception power continued to probe upward.

Suddenly, Lu Chen smiled faintly in his heart.

Under the exploration of the power of the sea, the sand sea above has completely returned to calm. Yan Yu was searching with his mental powers, and at the same time raised his fist to bombard the sea of sand, trying to find the entrance to the quicksand.

In fact, this quicksand will continue for a while after Lu Chen enters. If left unattended, Yan Yu also has a chance to enter the quicksand and continue to track him. As soon as Lu Chen sank into the quicksand, he immediately activated his qi and imprisoned the entire sea of sand above him.

Gang Qi imprisoned the sea of sand, and if the quicksand was cut off, Lu Chen sank into the depths of the sea of sand with the tail of the quicksand.

At this moment, Lu Chen went deep into the sea of sand with the quicksand, and he had already exceeded the exploration limit of his spiritual power.

Above the sand sea, calm returned, and Yan Yu could not find the entrance to the quicksand.

With no traces, even if Yan Yu still wants to track down, he can't do it.

After determining the situation above the sand sea, Lu Chen withdrew his power to know the sea, closed his eyes, and let the tail of the quicksand quickly sink to the bottom of the sand sea with him, flowing into the unknown distance.

Soon, the huge roar above could not be heard, but Lu Chen had no intention of breaking away from this quicksand for the time being, and secretly thought about it in his heart.

There will be dark rivers under the ground, and if they are revealed, they will either form fountains or deep underground pools. Quicksand is a dark river under a sea of golden sand. The quicksand flows through the weak part of the sand sea, and that place will sink and collapse, forming a passage into the quicksand.

Lu Chen and Yan Yu encountered the quicksand passage together, but Lu Chen entered the quicksand passage first, and at the same time cut off the opportunity for Yan Yu to enter the quicksand channel.

It was pitch black under the sea of sand, and there was no sense of direction, and the quicksand flowed extremely fast, even faster than when Lu Chen was running at full strength.

Lu Chen could feel that he was flowing up or down with the quicksand.

Time passed quietly, and he gradually became aware of the anomaly. It stands to reason that as this quicksand penetrates deep into the bottom of the sand sea, he should sense the coldness at the bottom of the sand sea. And as this quicksand surged above the sand sea, he should have sensed the scorching heat above the sand sea.

However, in the past period of time, Lu Chen has never felt a trace of cold.

As the quicksand poured into the bottom of the sand sea, he realized that the bottom of the sand sea was even hotter than the top of the sand sea. It seemed that a huge fire was burning below, scorching the entire sea of sand, and the heat spread from the bottom up. Fortunately, although it was hotter under the sea of sand, Lu Chen could still withstand it.

I don't know how long it took, in the pitch-black quicksand, Lu Chen's face changed slightly.

He noticed that the quicksand had not been flowing up or down for a long time, but had been surging downward.

As the quicksand surged downward, the pressure around him gradually increased, and at the same time it became hotter.

The increasing pressure and scorching heat made Lu Chen feel as if he was about to follow this quicksand into the huge furnace below the sea of sand.

The scorching heat is bearable, but the surging pressure is extremely terrifying.

If the sand sea is extremely deep, this quicksand continues to go deeper, and he doesn't have to wait for the quicksand to completely penetrate to the bottom of the sand sea, he will not be able to withstand the terrifying pressure at the bottom of the sand sea, and his body will be forced to explode.

Crackle!

Just as Lu Chen was thinking, there was a burst of explosions from his body under the huge pressure at the bottom of the sand sea.

The terrifying pressure was surging from all directions, and the flesh seemed to be tightly bound by countless iron cables, and at this time, many iron cables were still tightening, and the pressure was getting stronger and stronger.

Lu Chen's brows twitched slightly, fortunately, before entering the secret land, he had cultivated into a jade bone body. If he was still in the body of Ice Muscle at this moment, he would not be able to withstand the terrifying pressure at the moment. If you don't want to be blown up by the pressure in the sea of sand, you have to get out of this quicksand in advance.

As soon as his mind moved, a wisp of the power of knowing the sea escaped.

Suddenly, Lu Chen frowned slightly, and the range explored by the power of the sea was still a sea of sand.

The sea of sand seems to be bottomless.

His heart sank, and he continued to go deeper, and his jade bone body could not withstand the terrifying pressure at the bottom of the sand sea. And now he has been drifting in the sand sea with the quicksand for a long time, although the power of sea knowledge has long been unable to detect the movement above the sand sea, but Lu Chen is sure that now that he is out of the quicksand and returns to the sand sea, it will be difficult to meet Yan Yu again.

As soon as he thought of this, he was about to break free from the quicksand.

At this moment, a voice suddenly sounded in Lu Chen's mind.

"Wait a little longer. Sensing that Lu Chen was about to leave the quicksand and return to the top of the sand sea, Gu Linglong suddenly said.

"What's wrong?" Lu Chen asked with a frown.

"There's definitely something strange down there in this sea of sand. Gu Linglong said in a firm tone, and then explained the basis of her inference to Lu Chen.

She and Lu Chen drifted together in the sea of sand with the quicksand, and the changes that Lu Chen could perceive, Gu Linglong could also perceive.

It is obviously counterintuitive to have a hotter sand below than above the sand sea.

The bottom of the sand sea does not become hotter than the above the sand sea for no apparent reason, and it is the result of the ancient conclusion that there must be something strange underneath the sand sea.

"In this sand sea world, the fire attribute aura is very strong. The bottom of the sand sea is so hot, maybe there is a fire attribute treasure hidden at the bottom of this sand sea. Now that we've followed the quicksand to the bottom of the sand sea, why don't we go deeper and see what's so strange about the bottom of the sand sea. Gu Linglong said excitedly, as if the bottom of this sand sea really contained a heart-warming fire attribute treasure. At this moment, the Fire Attribute Arcana was waving his hand and calling for Gu Linglong.

Lu Chen nodded secretly, and as soon as he entered the secret land, he did notice that the fire attribute aura between the sand sea and the earth was extremely strong.

Of course, below the sea of sand is not necessarily a fire attribute treasure, it may be some kind of terrifying existence.

After a deep sigh, he suppressed the idea of leaving the quicksand and returning to the top of the sand sea, and quietly followed the quicksand further down the sand sea.

First, since he entered this secret place with the people of the Three Cities, he naturally wanted to gain something in the secret place.

Second, although the pressure around him is very strong, the jade bone body can still withstand it. When the jade bone body could not withstand the pressure at the bottom of the sand sea, it was not too late for him to come out of the quicksand.

Moreover, there is Gu Linglong with himself.

Now Gu Linglong has been able to burst out with a powerful power equivalent to that of a martial arts monk in the Yuan Dan Realm. Even if he encounters a danger at the bottom of the sand sea that is difficult for him to deal with, in a real crisis, Gu Linglong will definitely not stand idly by.

Cracking sound!

As the quicksand continued to sink, a sound like stir-fried beans came from Lu Chen's body.

Although he made up his mind to continue sinking with the quicksand, Lu Chen did not let his guard down. He condensed and sensed that once he found that the jade bone body showed signs that he could not withstand the pressure of the sand sea, even if there was really a fire attribute treasure under the sand sea, he would immediately cut off the idea of searching for treasure in his heart, and immediately broke away from the quicksand and returned to the top of the sand sea.

Continuing to go deeper into the bottom of the sand sea, Lu Chen's expression gradually became solemn.

The pressure transmitted from all sides is getting stronger and stronger, and at this moment, even the jade bone body is a little unbearable!

Cracking sound......

The body of the jade bone continued to explode, and the strong bones seemed to be about to break, and the pressure of the sand sea was terrifying to the extreme.

If you change to other Zhengang Double Heavenly Martial Dao cultivators, if you don't have a powerful defensive weapon in your hand, you will be pressed into a meatloaf if you use your physical body alone to resist the pressure of the surrounding sand sea.

Lu Chen was shocked in his heart, but he still gritted his teeth and persevered. He was in control, and although the pressure under him was terrifying, it had not yet reached the limit of the jade bone body.

He continued to follow the quicksand deeper into the sea of sand.

Click!

The pressure continued to increase, and the sound coming from the jade bone body became even more terrifying.

The jade bone body had reached the limit of what it could withstand the pressure, but the quicksand was still flowing, and it had not yet reached the source below the sea of sand.

Lu Chen's eyes were slightly downcast, and he decisively cut off the idea of treasure hunting in his heart.

But just as he was about to break away from the quicksand, there seemed to be a beam of fire shining through his closed eyelids.

Immediately, he noticed a sudden relaxation in his body, and the terrifying pressure suddenly disappeared.

Lu Chen was slightly stunned, he didn't take the initiative to get out of the quicksand, but it seemed that the quicksand thought he was redundant and threw him out.

When he opened his eyes, there was no quicksand around him, and at this moment he was in a hollow under the sea of sand.

In the center of the hollow of the sand sea was a raging fire, the size of a wooden house, on which the crimson flames spewed endlessly.

The fire in the hollow of the sand sea is like a small sun, constantly escaping heat in all directions.

The fire in front of him seemed to be the source of the scorching heat of the entire sand sea.

As soon as he fell into the hollow of the sand sea, even though Lu Chen was now in the realm of the True Gang Double Heaven, he still couldn't withstand the fierce baking of the flames, and sweat fell like rain in an instant.

With a flash of golden light, Lu Chen sacrificed a layer of Gang Qi Cover, resisting the roasting of the scorching flames at the cost of his own Gang Qi intense consumption.

The heat is slightly weakened.

In the pale golden qi shield, Lu Chen narrowed his eyes, and the power of sea knowledge was transported into his eyes, and he carefully looked at the flame ball that was the size of a wooden house in front of him.

Staring at the flames for a long time, his eyes tingled slightly, and tears couldn't help but flow out.

Lu Chen even suspected that if he kept staring at the flames, his eyes might be greatly injured and even blinded.