In fact, when Lin Luo and Ao hunted the fire beast together yesterday, it didn't take much time, and the whole process didn't even take a morning.

And after the hunt was over, Ao stayed in the cave for another night because he had to wait for Peng Niao to recover from his injuries.

Lin Luo was also in no hurry to leave, and his purpose was precisely because of these Nanshu trees in front of him.

After looking around and observing again, and confirming that there was no trace of the fire beast, Lin Luo carefully looked at the Nan tree in front of him.

Because of the impact of yesterday's battle, it can be clearly seen that there are some burning marks on the poles of the Nanshu.

However, compared to ordinary trees, the bark of the tree is smoother and very hard to the touch, not as easy to burn as most trees.

Moreover, although it is already the dry season, the leaves of the tree still look lush and will not begin to turn yellow until the dead season comes.

Therefore, even though the battle was so fierce yesterday, there was still no fire in the Nanshu forest.

Soon, after looking at the Nan tree, Lin Luo pulled out a sharp-toothed dagger from his waist and stabbed it fiercely at the Nan tree in front of him.

"Poof!"

With a muffled sound, most of the dagger pierced deep into the pole of Nanshu.

"It's hard!"

Feeling the force in his hand, Lin Luo showed a surprised expression on his face.

Because, the bark and wood of the Nanshu tree are far harder than he imagined before.

It was also true that he was using the sharp tooth weapon of a barbarian beast, otherwise even if it was a beast bone weapon of a hybrid beast, he would have to cut it several times before he could cut the bark of the Nan tree.

"Poof!"

Immediately, Lin Luo forcefully pulled out the sharp-toothed dagger, staring at the small hole that the dagger pierced.

I saw that not long after, an amber liquid slowly flowed out of the small hole.

Looking at the liquid that flowed out, Lin Luo gently scraped some with a dagger and put it between his nose and sniffed it, and his face suddenly showed an expression of surprise.

Oil!

That's right, the liquid that comes out of the hole in the tree is the oil!

Although Lin Luo couldn't confirm what kind of oil it was, judging from the smell, he was at least ninety percent sure that it was oil.

Moreover, the smell of these oils is very similar to that of diesel.

Trees can secrete oil!

It may sound, but it's true.

Not to mention this fantasy world, even on the earth, there are many kinds of trees like this.

On the earth, the gum juice secreted by the gum tree can be directly used in automobiles, and the yield is still very considerable.

In addition, the gum sap of a Brazilian gum tree can be used as diesel without any processing at all.

After simple processing, it can be turned directly into gasoline.

Trees like this are often referred to as oil trees.

As for why these trees are able to secrete oil, the reason is very simple.

This is because, when these trees photosynthesize, they store all their hydrocarbons in the stem of the tree, which eventually forms those petroleum-like alkanes.

Therefore, seeing the oily sap secreted by the Nanshu tree at this moment, Lin Luo did not feel so incredible.

"Poof! poof......"

After confirming that the juice flowing out was oil, Lin Luo clenched the dagger and stabbed it around the small hole several times.

After that, the bamboo tube is untied from the waist and rattan is attached to the bottom of the small hole to pick up the liquid that comes out.

After doing this, Lin Luo continued to turn around the edge of the Nan Forest, briefly looking at the situation of those Nan trees one by one.

"Da!

A moment later, in the Nan forest, there was a sudden sound of a rattling signal.

Apparently, a fire beast had spotted him and was signaling to summon the rest of his companions.

Realizing that his whereabouts were exposed, Lin Luo immediately ran to the original Nan tree, took off the bamboo tube and ran away.

He came here this time purely to verify some of his inner thoughts, and he had no intention of continuing to hunt fire beasts.

What's more, that pure-blooded fire beast had just been provoked yesterday, and if it continued to hunt the fire beast today, it would undoubtedly be very dangerous.

Therefore, after perceiving that he was discovered, Lin Luo decisively chose to flee.

"Zixiao, go!"

Turning over neatly and riding onto Zixiao's back, Lin Luo shouted.

"Roar!"

Hearing this, Zixiao let out a low roar and immediately fled here with Lin Luo quickly.

......

dwelling in a cave,

It took half an hour for Lin Luo to return to the cave where he had lived in the last two days.

After turning over from Zixiao's back, Lin Luo immediately got busy, found some dry firewood around, took out a flint and quickly ignited it.

Soon, after the bonfire was raised, Lin Luo took out the bamboo tube that he had put away before.

Although the amber liquid flowed out of the small hole at a very slow rate, at this time, almost half of the bamboo tube had been collected.

Looking at the liquid in the bamboo tube, Lin Luo first took two steps back and distanced himself from the bonfire, and then poured the liquid the bonfire.

"Whew!"

After the liquid was poured into the fire, the fire of the campfire suddenly increased a lot.

However, the whole process is relatively peaceful, and it is not like those pale yellow liquids in the sac-like organs of the fire beast, which will burn violently in an instant.

"And so it was!"

Looking at the bonfire in front of him, a smile suddenly appeared on Lin Luo's face.

At this moment, he finally had a thorough understanding of the creature of fire beasts.

Originally, yesterday, when he didn't understand how the gasoline-like fuel in the sac-like organs in the fire beast's body was produced, Lin Luo had already given up the idea of continuing to explore.

But when he wiped the bronze spear, he found that on the spearhead of the bronze spear, in addition to the blood stains of the fire beast, there were also some amber unknown liquids that smelled very similar to diesel.

This made Lin Luo think at once, in the previous battle, he used a bronze spear to nail a blood fire beast to the pole of Nan Shu, and then killed it.

This discovery once again aroused Lin Luo's curiosity, and made him shift his attention to the Nan Forest where the fire beast lived.

Because, Ao said before that fire beasts will only move in areas where Nanshu grows, and if you want to find fire beasts, Nanshu is undoubtedly a very important basis.

This made Lin Luo guess that the fire beast and Nanshu must have a very important connection.

And at this moment, the facts have proved that his guess is correct.