Drank the fish soup and slept all night.

On the seventh day, it was also Li Yan's last day in the Origin World.

After he got up, he took a sip of water and glanced at the shed of the ancient shovel-toothed elephant, the trough in front of him had been filled with plants and forage in the dimensional space of the three Buu yesterday afternoon.

The three-headed ancient shovel-toothed elephant, on the other hand, twisted its fat body and began to burrow into the shed, grazing and at the same time.

Black powder is composed of earth nitrate, sulfur, and charcoal.

Charcoal can be burned out of wood at any time, and earth nitrate has basically solved the supply problem, and now it is short of sulfur.

If you really want to look for ores that contain a lot of sulfur, you need to be close to places like volcanoes or magma eruptions, where the most sulfur is present.

But if there is a volcano on this dinosaur island, a volcanic island like this one, the lava eruption crater, is generally located in the center of the island.

And according to the current distribution of biological levels, the degree of danger there is estimated to be very high, and before there is no domesticated flying mount, it is not at all what Li Yan can handle now!

Fortunately.

There was still some sulfur ore that Fei Er had found in the cave at the bottom of the mountain before, which was enough for him to use for a while.

Thereupon.

After eating the food, he led the dinosaur team and took Fei Er to continue to the location of the cave at the bottom of the mountain and began to carry the sulfur ore.

Stop.

Upgrading his mid-level alchemy, coupled with the new Iron Pickaxe, combined with his ability to dismantle the sulphur ore, is not too easy.

Almost a few breaths of effort, one alchemy unit of ore can be separated.

And Li Yan's current dimensional space has been upgraded to ten cubic meters, plus the alchemy soul stone, and the space of the two dogs, all of a sudden, he can carry nearly twenty cubic meters of sulfur ore.

So.

He spent the whole morning running back and forth between the mine at the bottom of the mountain and the Shinjuku camp.

Every time he came back from mining, he would throw the sulphur ore into the refining furnace to have enough fuel for melting.

This accelerates the accumulation of sulphur resources.

During the period of Li Yan's mining and smelting, the dinosaur team could not participate too much.

In addition to bringing the two important creatures of fat two and big cows with you.

The other dinosaur brothers, he released them and let them hunt and upgrade nearby.

After all.

Now the levels of the Turtle Immortal, Ah Chief, and Ergouzi are too low, and they can't be graded at all if they don't reach level 10.

Fortunately, according to Li Yan's many observations of the dinosaur team's attribute board.

He found that the amount of origin energy required to accesticate a creature per level was far less than the value required by his system.

In this way, it is not too difficult.

It's afternoon.

Li Yan has accumulated a total of ten boxes of sulfur ore, and he has also accumulated a large box of sulfur.

As for the squad, in the morning, they also "lived up to their trust" and successfully filled three boxes of feces.

He pinched his nose, stirred the three catalytic boxes, and put them in the catalytic house outside the camp.

Now, the house is filled with nine large catalytic boxes, and by the time all these earth nitrate reactions are completed, plus the existing sulfur materials, it will be enough to make two large boxes of gunpowder!

"Beautiful!"

To put it mildly, for the first time in Li Yan's life, he was so happy to watch!

It's late afternoon.

The turtle fairy and the two dogs came back from the woods with some minor injuries.

After a day of hunting.

Ergouzi and the Turtle Immortal were directly upgraded by one level, both reaching level 7, which is at the same level as Ah Chief, and although it has not been upgraded, it has also accumulated most of the energy value.

"After I leave here, let the big bull also join you, according to the current efficiency, you continue to hunt, it is estimated that when I come back, it will almost reach level 9."

As for Li Yan himself.

Although it has absorbed more than 7,000 points of energy from the Alchemy Soul Stone, it is still half of the value, and it is estimated that it will only be able to continue to upgrade when it comes back.

Early in the morning of the eighth day.

Li Yan was completely woken up by the system's prompt sound.

"Drop! The Origin World cooldown timer is over, and the host can return to Earth World at any time! ”

"Drop! The detection host is currently an intermediate authority in the Origin World, and can only return to Earth with ten cubic dimensional space materials, and the type of materials carried is random...... Random success! ”

"The host can choose one of the following three options, and after the selection is confirmed, it cannot be changed: a single low-level plant material, a single medium-level metal material, and a single medium-level animal information carrier material!"

Ten cubes?

Optional supplies?

Is this the benefit of the intermediate privilege upgrade?

It's a lot more convenient!

Li Yan frowned and looked at the option information in his mind.

The first one he had already carried, the plant was indeed a very practical thing, because it was, after all, a new species of the world of origin.

And the second one, obviously, refers to the metal that has been refined in the refining furnace, because it comes from artificial, so in terms of grade, it is higher than iron ore.

As for the last one, it made him quite excited.

Intermediate animal information carrier!

If the low-level are proteins, cells, enzymes, etc., then the middle-level ones are bones, organs, and muscle tissues.

That is, I can go back with part of the corpse of the creature?

Of course, this was not enough to make Li Yan completely excited.

What really excites him is that since the intermediate authority can carry animal corpses, then the advanced clearance, will it be able to carry living creatures back to Earth?

When the time comes, won't he be able to use these ancient creatures to build a real "Jurassic World"!

"Oh my God......"

Li Yan felt a little short of breath when he thought of the plots in the movie.

Of course, he is not a fool, and such a thing as the resurrection of dinosaurs will cause a sensation when you think about it.

Before deciding to reveal their identities, they must first come up with a plausible explanation.

Just like when he was looking for the "earth identity card" for the three-leaf green pear fruit and iron ore, if you want to disclose the prehistoric creatures, you must do enough foreshadowing!

I thought about it for a long time.

Li Yan finally chose the third item, after all, the opportunity to shuttle and carry animals in the world is still very rare.

Although only the remnants of a corpse.

But the amount of information carried by an animal is much more complex than that of a plant.

At first, he wanted to carry dinosaur meat directly.

But after calming down, Li Yan felt that even if he brought the dinosaur meat back, he couldn't do anything.

Judging from the existing level of paleontological gene research on the earth, dinosaur genes are still too shocking, even if he cracks the DNA, he does not dare to publish it.

After all, first of all, he couldn't tell the origin of the DNA, and in the end he could only smash it in his own hands and hold it, but he wasted this opportunity to carry it.

Dinosaurs can't do it, why don't you carry some ancient creatures?

Li Yan suddenly thought that when he used to watch the news, he would often receive such news as "the mammoth may be resurrected", "the saber-toothed tiger may reappear" and so on!