A few days later, the Interstellar Element Research Institute completed the transformation of the interstellar spacecraft and handed it over to Qin Guan.

Scientists sprayed the interior and exterior of the spacecraft with high-performance chemical corrosion-resistant materials such as polyphenylene sulfide and polytetrafluoroethylene, replaced some local parts, and added a towbox that can automatically collect cyanogen ice crystals behind the spacecraft, with a total volume of two tons.

Qin Guan brought the spaceship and the tow box into the grass world.

and pulled Cangyu in front of the big screen in the main world.

He handed the spaceship to Cang Yu: "I'll leave this matter to you, help collect a thousand tons of elemental ice crystals first." ”

"Okay, no problem." Cang Yu and the obtuse angle of the sharp angle boarded the spaceship, and took the spaceship out of the grass world, and after ten minutes of teleportation, they teleported to the nameless rock planet near the Elemental Ice Crystal Belt, and retreated to the place where they had landed before.

Gurgle~.

The ship shook slightly, and there were a few crunching noises from the bilge.

"We seem to be pressed directly above the ship from before." Acute angle said.

Cangyu: "Well, yes, take off immediately!" ”

The new spaceship was quickly lifted into the air.

They looked down through the portholes, on the surface of the rocky planet, where the ship they had piloted had been thoroughly corroded by the gas, leaving only a pile of black debris mixed with scattered non-metallic materials and accessories.

"It's a pretty powerful element." Obtuse angle sighs.

Cang Yu: "Yes, if there is no Qin Pass, we will be trapped on this desolate rocky planet, and we may not be able to leave until we die." ”

Blunt Angle: "And I don't even have equipment or weapons, so I can only survive with my bare hands." ”

"yes, that's hard......"

"Fortunately, there is Qin Guan and his space world."

……

Piloting the corrosion-resistant spaceship, they soon flew to the ice crystal belt and began to collect ice crystals.

A total of six flights were made, and eleven tons of ice crystals were collected, which exceeded the task.

Every time they filled the collection box and it was almost two tons, they would teleport back to the Caolu World in space, and then Qin Guan would teleport the collection box to the Interstellar Element Research Institute of Tianliang Campus.

Pang Shanzhong has already transferred sappers, and next to the research institute converted from a large warehouse, a warehouse has been built specifically for storing the elements.

The warehouse is a fully sealed structure.

Twelve huge tanks were neatly placed in the warehouse, each with a capacity of one ton.

According to the special properties of the element and the state at different temperatures——

-32.5 degrees or more, colorless and odorless gas;

between -32.5 and -116.2 degrees, colorless liquid;

Below -116.2 degrees, it condenses into a permeable solid in the form of ice crystals.

Scientists at the institute used the traditional liquid nitrogen refrigeration method to store the collected elements.

Special double-walled containers are used with an inner capacity of one ton; The inner and outer layers are filled with liquid nitrogen, and the temperature is controlled below -196.56°C, and the inner layer can store the elemental ice crystals.

Ice crystals are quite stable in the solid state, and as long as they do not heat, melt, or volatilize, they will not diffuse.

But just in case, there is a big sign hanging in the most conspicuous place outside the warehouse door:

[Dangerous goods, please do not bring any metal objects into the warehouse, especially precious metals, otherwise you will be responsible for the loss. 】

……

……

After Cang Yu helped Qin Guan collect eleven tons of Elemental Ice Crystals, he unloaded the attached collection trailer and teleported back to the ice crystal belt with the spaceship.

He memorized the coordinates of the ice crystal belt, and then, according to Qin Guan's suggestion, he drove the anti-corrosion spaceship out of the ice crystal belt, and circled around the space several times, trying to get rid of the elements left on the spaceship, before landing on the rock planet before.

Qin Guan wanted to send this spaceship back to the sealed laboratory of the Elemental Research Institute, and then replace Cang Yu with a normal starship.

Just in case, Qin Guan asked Cangyu Triangle to send the spaceship back, set off from the landing site of the rock planet, and walked in a certain direction for three hours, while unloading all the clothes and equipment on his body, making sure that there were no elements left on his body, and then coming back to get a new spaceship.

Cang Yu gladly complied.

……

After Triangle exited the Caolu World again, Changfeng suddenly appeared in front of the big screen, without pulling the iron horse, holding a large vacuum cleaner-like device in his hand and a detector in the other, and began to clean up the residual gas in the Caolu World.

Qin Guan was stunned for a moment.

Can a material exchanger not know it?

He wasn't summoned this time, but he was able to show up on his own initiative? And what is in the hand?

When Changfeng, the material exchanger, saw Qin Guan, the beard on his face moved slightly, and said with a smile: "You guys are really nerve-wracking, every time you want me to help you clean up the air, don't you want those weapons in the warehouse?" ”

With that, he held up the wide air intake and sucked in and filtered all the air around the big screen and the entire square.

Holding the element detector again, he tested everything in the places that Qin Guan could see, including the warehouse, the starry sky villa, and the plant field behind, before collecting the tools and walking back to the big screen.

Qin Guan blinked: "Isn't it the first time you've helped us clean up the air?" ”

Changfeng: "Of course it's not the first time. My other identity is the guardian of the main world of this space, and I have done more than this one thing for you silently. This time, you got a lot of corrosive gas, and if you didn't quit in time, I had to show up in your presence. Wait a little longer, I'm afraid that the iron horse won't be able to keep it. ”

Qin Guan: "...... Well, I'm sorry for your trouble. ”

"You're welcome." Changfeng smiled again, ready to leave, disappearing.

Qin Guan shouted to him: "Wait, the system of the Caolu World has actually known the nature of this element for a long time~, right?" Surely you know how to control this element, or know how to neutralize its nature, right? Otherwise, you can't just come out with this 'air purifier'. ”

Changfeng nodded: "Of course I know." This element is unknown to you humans, but it is present to the universe as a whole. ”

Qin Guan immediately asked, "So, do the Germanium Duo clan understand this element?" Do they know how to deal with it? ”

Changfeng paused for a few seconds and said, "I couldn't answer this question, but given your strong spending power and good reputation in various map shops, I'll tell you." ”

Qin Guan: "......"

Snobbish again? If you have few points in your hand, don't you even have the qualifications to inquire about the news?

Heh, system logic.

Changfeng said: "The Germanium know this element, but most of the Germanium have never seen it, and they know about it as well as you humans know about strong acids. ”

Qin Guan said: "Know how to deal with it, but you may not be able to avoid harm 100%?" ”

Changfeng nodded: "Yes, and in the process of interstellar business, they don't routinely carry neutralizers that can deal with the element, just like you humans, you don't usually carry compounds that deal with strong acids." ”

Qin Guan understood: "That makes sense, thank you." I have another question, how much is the stock of the element in the entire universe? ”

Changfeng paused for a few more seconds, and seemed to reluctantly reluctantly revealed: "The element is not found in every galaxy, because at the beginning of the universe, this element was formed only under certain conditions. In fact, the formation of each element requires specific conditions. ”

Qin Guan: "Uh-huh. I remember the chemistry teacher said something similar. ”

Changfeng continued: "The stock of Misty in the universe is only about 0.71%, which is a rare element. You're really lucky to have met this element. ”