primitive survival evolution

Chapter 54 Oxygen (please collect! Please recommend tickets!)
Upon hearing this, Li Yan hurried over to flip over the huge fern leaves.

Finally came to them.

Wen Shi was half lying on the ground, and Tamar was supporting him.

"What's wrong? He was bitten by a poisonous insect?"

Li Yan put his fingers among Wen Shi's people and felt relieved, he was still breathing.

"That's how he fell down. I didn't see any insects biting him." Tamar, who usually knows everything, came to the Coal Forest at this moment. When she saw that her companion had an accident, she panicked and felt helpless.

"Well, let's transport him there first."

Soon, Li Yan carried Wen Shi back to the camp.

Tamar quickly poured some water into Wen Shi, and his complexion gradually improved.

However, just as Li Yan stood up, he looked up and saw Yihe Monkey, who was leading the beast to eat grass, also fell in the grass not far away.

"wing!"

"monkey!"

Li Yan shouted and ran towards that.

Both of them passed out on the ground, showing the same symptoms as Wen Shi.

Carry the two of them back to the fire, and lie side by side with Wen Shi.

Tamar fed them water and some herbal medicine from Simu, and the three slowly woke up.

"Why did you faint? Do you know?" Li Yan asked repeatedly.

"do not know."

"It's just that I have been a little dizzy in the past two days, and today I am particularly dizzy. My chest feels tight and I want to vomit. I don't know why I got dizzy."

No poisoning, everyone eats the same.

Why do they faint?
Li Yan frowned while looking up at the surrounding environment.

"Fizz."

There was a slight sound from the tall tree crown above his head.

Looking up, I saw a few monkey-sized squids swinging on the branches of the tree, some of them were holding pine cones and transporting the pine cones to the tree hole, and some of them were wrapped around their bodies. Dressed in leaf clothes, dancing on the trunk.

"Is that thing intelligent?"

Li Yan looked at it strangely.

This towering giant tree belongs to the pine family, and there is a branch every three to five meters.

Next to the giant pine tree, there is a shorter fir tree.

Li Yan came under the cedar tree, transformed into a Pangu warrior, jumped to the five-meter-high branch of the cedar tree, and then jumped to a higher place of the cedar tree.

From this higher point, aim at a branch of the giant pine ten meters away.

Jump!
Successfully jumped to the giant pine.

jump!
Jump to a branch five meters high.

In this way, he climbed to the branch where the squid was.

But at this time, they were gone. Li Yan approached the tree hole with the size of a human head, picked a branch and poked it in, but there was nothing except some hay and pine cones.

Li Yan sighed in disappointment, and couldn't help but look down. The people under the tree became very small, and the location was at least ten floors above the ground.

"It's so high!"

"I don't know if you jump down in the Pangu warrior state, will you fall to your death?"

"Never mind."

Li Yan raised his head again and looked into the distance.

Seeing this, he was quite shocked.

I saw that in the direction of the tribe, there was actually a huge slope slanting up, endless, and the slope made up of giant trees was like a big green carpet, which was very spectacular. In other words, it was where I was now. The altitude of this place is very low.

"Low altitude?"

"That's right! I know the reason."

There are many trees here, and the oxygen content is high. The density of oxygen is lower than that of air, and the altitude here is still low, so the accumulated oxygen is more. Once humans and animals enter places with higher oxygen than usual, they will be drunk and oxygenated. It's low altitude reaction.

In the past few days, I didn't feel tired when I walked, because I had enough oxygen, but today it was easy to light a fire, and the clansman fainted again, that is because of excess oxygen.

The past few days have not stopped at all, and they have driven a long distance all of a sudden, and all of a sudden they have come to a place with higher oxygen content, so those tribesmen will appear drunk with oxygen.

After knowing the reason, Li Yan's hanging heart also let go, and then he slid from the giant tree back to the ground.

Come before the crowd.

Shi, Yi, and Hou all woke up, but their complexions were not very good. They were just ordinary people, and they couldn't compare with Pangu warriors like Li Yan and Tamar. However, Li Yan was not sure, if Pangu warriors If you go to a place at a lower altitude, will you also experience drunken oxygen?

Therefore, he decided to slow down the speed in the following days, walk for one day and rest for half a day, so that everyone can adapt slowly.

ten days later.

They finally came to the bottom of the carboniferous forest.

This is an endless plain, with dense gymnosperms and huge ferns growing everywhere. Most of the creatures here are insects, and they are large insects.

In such an environment, it is very difficult to find a scorpion.

They came under a towering ancient tree on the edge again, and Li Yan climbed up the ancient tree again.

Stand on a high place and look into the distance.

A sea of ​​green, shining in the sun, full of gymnosperms and spore plants, some iron trees grow flowers like giant towers, and many bees with big heads are working hard there.

Suddenly a ray of light pierced his eyes.

Li Yan squinted his eyes, and after slowly getting used to it, he realized that it was a huge lake.

The color of the big lake is very blue, which can clearly illuminate the white clouds in the sky like a mirror.

Especially, there are many hills beside this big lake.

"Oxygen scorpions like to lay eggs in caves, where there are hills, there may be oxygen scorpions."

Li Yan quickly slid under the tree.

"Sister, there is a big lake and many hills there, let's go there." Li Yan pointed in the direction of the big lake.

Tamar looked around, and saw that there were impenetrable grasses in front of her. These grasses were five meters high, much taller than the dinosaurs now. Who knows what kind of poisonous insects and giant insects are there in the bushes?
"How do we get there?" Tamarien asked.

Li Yan frowned.

Indeed, there is no road, and it is basically impossible to climb over such a large grass, unless it is artificially cut a little bit of grass to clear the way, which may take a very long time.

Li Yan thought for a moment, then said: "Since the eggs of oxygen scorpions can be used as feed for Tyrannosaurus rex, there must be a large tribe coming to the Carboniferous Forest, and the Great Lake is the most likely place to have oxygen scorpions, so let's split up Look for it, and pay attention to whether there are traces of people around."

"Okay." Tamar nodded.

A group of people divided into three teams and sat on three dinosaurs to search.

The grass here is very dense, and it is difficult for people to walk on the ground. They can only be crossed by sitting on tall dinosaurs. Naturally, other big tribes also have to drive beasts to walk.

Li Yan's dilophosaurus is not tall, but it can also walk in these chaotic grass.

He deliberately searched for some of the most difficult places to walk. He felt that if he opened the way here, he would definitely choose to open the way in some hidden places. The resources are so precious, so naturally he should not tell outsiders.

time flies.
Li Yan drove the dilophosaurus, and found a road that was suspected to have been opened behind a bush. The outside of this road was covered by the surrounding weeds. At first glance, it looked like a piece of ordinary grass. .

Because the weeds there were abnormally dense, Li Yan drove the Dilophosaurus over there, picked up the grass with his spear, and moved forward for ten meters.

Sure enough, there was a relatively obvious grass path, which was more than five meters wide, and there were no tall shrubs or grass heads blocking the path along the way.

"Knew it"

Li Yan smiled.

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(End of this chapter)