With the passage of time, half a month passed in the blink of an eye.

"Tsk!"

After letting out a painful scream, a fiery beast fell to the ground without a sound.

It was a wooded jungle, not very far from the Valley of the League, where the tribal alliance lived.

As far as the eye can see, there are tall and straight nan trees all around, and it is a large area of nan forest.

Before, after Lin Luo asked Zhuwu to send someone to find Nanshu, it took nearly half a month for the soldiers who were sent to finally find this Nanshu forest.

"How's the cleanup?"

Looking at the dead fire beast on the ground, Lin Luo withdrew the bronze spear and turned his head to ask the buckwheat not far away.

"Except for a few fire beasts that escaped, all the others have been killed. ”

Hearing this, Buckwheat immediately replied loudly.

Generally, where there is a Nan Forest, there are fire beast groups living in it, and this Nan Forest in front of you is naturally no exception.

However, compared to the fire beast race encountered in the dense forest, the fire beasts in this Nan forest were much weaker at this moment, and they were all just ordinary beasts.

There wasn't even a fierce beast-level fire beast, let alone a powerful pure-blooded fire beast.

Therefore, after finding this Nan Forest, Lin Luo just asked Buckwheat to lead a team of totem warriors to clean up the fire beasts in this Nan Forest.

Although ordinary fire beasts can also breathe scorching flames, fortunately, when they destroyed the python tribe before, they harvested a lot of python skin.

At this moment, everyone in the team is wearing animal skin clothing made of python skin, and there is no need to worry about the flames igniting the clothes on their bodies.

At the same time, due to the black animal skin cloak obtained from Chi Mang's body, it has been severely damaged after repeated fierce battles.

Lin Luo had now taken it off and put on a close-fitting python skin suit sewn from the python skin of the golden python, and wore it inside the heavy animal skin coat to act as an inner armor.

"Okay, let's start collecting oil according to the method I said before!"

Hearing Buckwheat's answer, Lin Luo glanced at the stout Nanshu around him and said.

"Yes. ”

Hearing this, Buckwheat nodded in response.

Immediately, he immediately turned around and got busy with the team.

In order to collect the oil in the Nan tree, during this time, Lin Luoke went to the smelting area and personally guided the casting of a batch of special collection tools.

"Phew!"

With a soft sound, everyone in the team held a special knife in their hands, and spun upwards to cut a dent on the pole of the nan tree.

Those knives were cast by Lin Luo in imitation of rubber tapping knives, and the knives were in the shape of a V, which was very convenient to use.

After two or three consecutive cuts, I cut the hard bark of the nanshu tree, and saw amber oil slowly seeping out from it.

Seeing this, everyone immediately took out the bronze piece that was also in the shape of a V, and forcefully inserted it into the lowest end of the indentation that was cut.

This is also Lin Luo's imitation of the rubber tongue used in rubber tapping, which mainly plays the role of diversion.

After the tongue was inserted, the people untied the bamboo tube around their waists and fixed it under the end of the tongue to hold the oil that had been collected and flowed down.

After doing all this, everyone continued to look for a new Nanshu, repeating the process just now.

Soon, it didn't take long for the surrounding more than 20 Nan trees to be tied to bamboo tubes used to collect oil.

"Lin Luo, what is that water flowing out of this tree?"

After finishing his work, Buckwheat walked to Lin Luo's side and asked Lin Luo with a curious face.

"That's not water, it's oil!"

Lin Luo shook his head lightly.

"Oil?"

Hearing this, Buckwheat suddenly had a question on his face, he had never heard of such a thing at all.

"What is oil? Can you eat it?"

At this time, a totem warrior next to him immediately asked aloud.

"Can't eat it!"

Before Lin Luo could speak, someone in the team immediately took the lead and said, "I tasted it when I was collecting it just now, and it tasted very unpalatable. ”

“......”

Hearing this response, Lin Luo's face was speechless.

Encountering something you don't know and taking two bites curiously, this is a common problem of primitive people.

What's more, the oil still seeps out of the tree stems, and it is easy to think of it as something to eat.

"There are some oils that can be eaten, but these oils cannot be eaten. ”

Lin Luo shook his head slightly and explained, "These oils are used for combustion. ”

"Burning?"

Hearing this, everyone in the team looked at those with a look of astonishment, and at this moment, the oil was constantly flowing into the bamboo tube through the rubber tongue.

For this liquid substance, they have always recognized it as water.

Water that can burn like wood is a bit more than they realize.

"That's right, burn!"

Looking at the astonishment on everyone's faces, Lin Luo chuckled and nodded.

It took an afternoon to collect the oil, and when the sun was setting in the west, I finally collected all the bamboo tubes I had brought with me.

Looking at the bamboo tubes filled with oil, Lin Luo asked everyone to take all the tools and set off to return to Menggu.

......

In the Menggu Chamber,

"Can this water really burn?"

Zhu Wu looked at the amber oil in the bamboo tube, and asked Lin Luo with a surprised face.

Around, the other witches and chieftains all had the same expressions, curiously scrutinizing the oil.

"It's not water, it's vegetable oil!"

Lin Luo explained aloud: "Before, when I encountered fire beasts in the dense forest, I secretly observed that those fire beasts were able to breathe flames precisely because they swallowed these oils. ”

Although the oil spit out by the fire beast has already undergone a complex chemical reaction in the fire beast's body, it belongs to a different type of oil from the Nanshu oil.

However, those chemical reactions were very troublesome to explain, so Lin Luo simply skipped them and didn't make any more trouble for himself.

"I didn't expect that the fire beast actually swallowed this water, oh no, after swallowing this oil, it could only spit out flames!"

Hearing Lin Luo's explanation, Lu Wu suddenly sighed and said.

Their deer clan has always lived in this area, so naturally they know the fire beast.

However, the deer witch never knew that the fire beast was able to breathe flames only after swallowing the oil of the nanshu tree.

"Shall we use this oil instead of campfires in the future, or will we use it to smelt bronze weapons?"

The fox witch turned his head to Lin Luo and asked.

"Neither!"

Hearing the fox witch's inquiry, Lin Luo shook his head slightly.

"Neither?"

Lin Luo's answer made everyone slightly stunned.

After all, the only use of combustibles is the campfire and the smelting area.

If they don't use either of them, they can't really think of any other use.

"This oil is used to make oil lamps!"

Looking at the puzzlement on everyone's faces, Lin Luo explained out loud.