The wall of fire continued to burn, and the oxygen in the air began to thin out again.

Under the thin air, in the thick smoke, the phantom spider's movement began to become sluggish, and the flying self-detonating spiders began to fall down one by one.

In the smoke, Chen Xiao, who vaguely saw this scene, slowly grinned at the corners of his mouth.

This is the result he needs now, all retreats are closed, and the space for battle is compressed.

This is obviously more beneficial to the Phantom Spider, and the back road is also cut off.

Although Chen Xiao understood that he could not be the opponent of the Phantom Spider, he didn't really want to fight the Phantom Spider.

If there is an opportunity, it is natural to keep a useful body, rather than blindly sending it to death.

It is not a profound truth to always keep a little way out for yourself.

In the face of an invincible enemy like the Phantom Spider, there is even more need for a place to retreat.

At this moment, although the thin oxygen also made Chen Xiao feel very painful, this was also the only possibility to force the phantom spider to open this layer of curtain.

These spider silks can even be ignored by Xiao Ai's wall of fire, and Chen Xiao doesn't think that he can break it quickly.

And the layers of spider silk are naturally stronger.

It's just that the wall of fire that burned again didn't make the phantom spider let go of the spider silk that shrouded the entire pit.

Instead, it quickly extinguished the burning flames, in exactly the same way as before.

It's just that every time it extinguishes a wall of fire, another wall of fire will burn.

The oxygen content in the air is also rapidly replaced by carbon dioxide under the burning of the walls of fire.

The phantom spider's actions also became more violent, and Chen Xiao and the others couldn't help but lie on the ground, with thin oxygen and a large amount of carbon dioxide, only there was a trace of living space on the ground.

The tall phantom spider is even more difficult.

Throughout the space, thick smoke has blocked all views, and visibility has been reduced to almost zero.

If it weren't for a gas mask, I'm afraid that if you don't die of lack of oxygen, you will also be choked to death by thick smoke.

Those flying self-exploding spiders are the best results.

This kind of scene lasted for about ten minutes, and Xiao Ai still kept putting the fire wall.

It's just that her movements are getting slower and slower, and Chen Xiao's consciousness is also beginning to be a little trance, which is the consequence of severe hypoxia.

But he gritted his teeth and persevered, and he had to let the Phantom Spider let go of its complete restraint on this area.

Otherwise, there is no difference between dying of lack of oxygen and being killed by a phantom spider.

The old demon beside him also gritted his teeth and insisted.

At this time, it is a matter of who can hold on a little longer.

Another minute passed, and Chen Xiao, who was lying on the ground, couldn't help but take off the gas mask.

There was already little oxygen, and with the barrier like a mask, he could barely breathe oxygen.

Xiao Ai and Xiao Ru are the same, and the old demon also took off the gas mask at the same time.

They lay completely on the ground, face down, trying to avoid the smoke that filled their heads.

The wet soil has become their only medium to save themselves.

Groundwater seeps out and brings a small amount of oxygen to this enclosed space.

A little oxygen contained in the water can somewhat alleviate the pain of hypoxia.

Digging out a large piece of soil, Chen Xiao didn't care about anything else, directly buckled it on his face, and breathed slowly.

In the mud soaked in groundwater, a little oxygen is inhaled into the lungs, and the body is greatly relieved by the pain of lack of oxygen.

Xiao Ai and Xiao Ru also followed Chen Xiao to pick up the soil with groundwater, and the old demon also followed.

The four of them lay on their stomachs like this, trying to get as much oxygen as they could to survive.

However, before they could breathe their breath, a large number of self-detonating spiders crawled towards them in the thick smoke.

The Phantom Spider was still holding on, and before it could unravel the closed spider silk, it only wanted to kill these few people.

When things came to the last step, Chen Xiao untied the mountaineering bag beside him for the first time, took out several bottles of mineral water, and then took out two unopened towels and handed one to the old demon.

Tie the hug tightly to the mouth and nose, and pour mineral water on the towel.

This is how much a means of sustaining a short fight, but can last, unless there is enough water.

And Xiao Ru and Xiao Ai have veils on their faces, and they can just soak the veil directly.

The lack of oxygen was temporarily alleviated, and Chen Xiao immediately ordered Xiao Ai to quickly release a few walls of fire.

Endured the heat and kept the self-exploding spiders crawling down the ground behind the wall of fire.

He didn't want to waste his energy fighting the self-exploding spider at all, and against such a steady stream of suicide troops, the wall of fire was the best means of attack.

The experience bar began to grow significantly again due to the death of a large number of self-detonating spiders.

And the wall of fire that burned rapidly depleted the last bit of oxygen in the air.

Chen Xiao and others can only get a small amount of oxygen from bottles of mineral water.

More often than not, they have to use seepage groundwater to obtain oxygen. After all, the oxygen content of mineral water is not as much as that of groundwater.

And there is also some oxygen present in the soil, which is incomparable to mineral water.

This confrontation, which is entirely willpower, begins to continue again, and the extinguished wall of fire often quickly burns again.

Hundreds of meters away, Chen Xiao could feel the mania of the phantom spider at the moment.

It was a silent battle, insisted on being carried out in silence.

As time passed, there was no oxygen in the air, and the smoke completely enveloped the entire enclosed space.

Chen Xiao and the others had difficulty opening their eyes, and could only perceive everything around them by hearing.

Under their stomachs, four pits had been dug and the groundwater had collected into the small pits, forming four small pools.

It's the only thing they can save their lives now, and it's only deep underground that there's such an abundance of groundwater.

In addition, Egret Island is surrounded by the sea, and there is never a shortage of water in the soil.

Just waiting for now, the phantom spider did not let go of the surrounding spider silk as Chen Xiao wished.

This made Chen Xiao's heart slowly anxious, although he could still hear the sound of the Phantom Spider's rage.

But the result did not change at all, there was no breathable oxygen in the surrounding air, and the concentration of smoke did not decrease in the slightest.

This shows that the space is still closed, and there is no air circulation at all.

If it goes on like this, let alone the Phantom Spider, even they won't be able to survive.

Although it can also absorb some oxygen from soil and groundwater, if you are in a thin state of oxygen for a long time, your body will quickly become weak.

Even if you can breathe enough oxygen, it is difficult to recover quickly.

However, this disadvantage is believed to be the same for phantom spiders.

Now, Chen Xiao can only choose to persevere, no matter whether the phantom spider will be affected or not, he has no other choice.

Time passed again in silent persistence, and Chen Xiao couldn't remember how long he had persevered.

Because he didn't feel the passage of time at all now, and there was only a blank space in his mind.

The four of them lay motionless on their stomachs, their faces dipped in groundwater from time to time, taking in a meager dose of oxygen.

The self-detonating spiders all fell to pieces, and they all suffocated to death without the need for a wall of fire to destroy them.

Xiao Ai has not continued to release the wall of fire for a long time, because now let alone the wall of fire, even a small flame can't burn.

Suddenly, there was a strong vibration, which made Chen Xiao's consciousness almost blank, and he immediately sobered up.

The spider silk curtain that had been deeply embedded in the ground was breaking away from the ground, and the enclosed space was released.

The smoke squeezed inside was also vented for the first time, and it poured out quickly.

The oxygen outside was also flooded in instantly, and Chen Xiao, who was facing up on his back, greedily inhaled the fresh air.

He had never felt such a wonderful thing to be able to breathe, he had never felt that it was so refreshing to be able to breathe.

The dull mind and dull chest have been greatly relieved.

In the sky, the stars are reflected, the stars are twinkling, and everything seems to be extremely beautiful in Chen Xiao's eyes.

"So I'm still alive."

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