After a while~

After the gray demon rat's invasion, the valley seemed to be calm again, and the people walking in the long narrow corridor of the mountain also slowly calmed down~

"This is the crystal that you dug out of the gray demon rat? Spirit crystal...what's the use of it?"

At this time, Han Yu Xiaotian was playing with a thumb-sized transparent crystal in one hand, and curiously asked Luo Nan next to him.

...

"Yes. These alien world creatures want to swallow active substances and store them in their bodies. Over time, they will form such spirit crystals.

This kind of spiritual crystal contains a large amount of concentrated energy essence, which is extremely versatile for us humans, and can be said to be higher than the highest purity energy stone in our universe.

It can be used for our spacecraft navigation energy, the main thruster energy of large quantum instruments, the energy core of the particle cannon, or the eyes of various rune arrays, etc..."

"However, the gray demon rat is relatively low-level, and the energy contained in the spirit crystal is not rich, but it is better than nothing."

Luo Nan slowly explained.

...

Humans have fought against creatures in these different worlds for hundreds of years, and naturally they have a deeper understanding of each other's characteristics.

When these spirit crystals were first discovered by humans, they were judged to be of incomparable value. It is absolutely unparalleled for the development of the human world and civilization, and it is far above the energy element stone.

At the same time, the spirit crystal is one of the reasons that tempts the major humans to hunt in the deserted battlefield.

...

"Extremely pure energy? Interesting..."

Listening to Luo Nan's answer, Han Yu Xiaotian's eyes flashed inexplicably.

Just now Luo Nan said that Hanyu Xiaotian unconsciously thought of the super cell on King Mori. It is also the presence of swallowing active substances.

Although Hanyu Xiaotian didn't know whether there was a relationship between the super cells on King Mori and these creatures in other worlds, it was not Hanyu Xiaotian's concern at the moment.

What makes Hanyu Xiaotian's heart move now is that he once ‘swallowed’ that super cell on the planet Mori, and only then has the ‘celestial body’ at this moment...

Then~

Can the spirit crystals of creatures in another world eat...

...

"Well, Hanyu Rune Master, if you are interested in spirit crystals, I can give you this piece. In fact, it is very easy for you rune masters to obtain spirit crystals.

If you have a high level of attainments in runes, it will be easy to obtain spirit crystals in the future. "

Seeing Han Yu Xiaotian holding the Lingjing thoughtful look, Luo Nan couldn't help but said.

...

"Oh? Shouldn't it be the powerhouses walking on the barren battlefield that can kill each other and obtain the spirit crystal? The rune master is not on the battlefield, how can he obtain the spirit crystal?"

Han Yu Xiaotian asked strangely.

"Is it possible to portray runes...Is it possible that Hanyu Rune Master thought that the Rune Masters repaired and refined the gods for free?"

Luo Nan said in a tone of envy~

"The rules of the deserted battlefield. Any strong man who needs a rune master to repair, upgrade or refine a new magic weapon needs to pay.

In addition, the major alchemists and refiners are the same. "

"No matter which member country or strong person wants to refine pill, or smelt and forge various alloy weapons, they all need to pay.

These rewards are determined by your masters based on the difficulty of repairing the runes depicted. And the specific remuneration is also up to you..."

...