Li Zhao thought of a gas, hydrogen.

Hydrogen is a lighter gas, but it can be burned, and the reaction during combustion is more intense than that of coal gas and natural gas, which is why there is a terrible hydrogen bomb.

Gently lifting the box and lowering it, Li Zhao nodded alone, under the same volume, this box is indeed not as heavy as ordinary items, and it is not an exaggeration to say that it is hydrogen.

It's just that the hydrogen is compressed into a solid state, so there is no shaking in the box.

And the reason why it can burn on the outside is the result of solid-state hydrogen gasification, but not much.

But he is not sure that hydrogen is extremely light, and if there is really solid hydrogen being gasified, it will also be lifted into the air at the first time, and if it is not in a short time, it will be difficult to burn in an open flame.

Space burning doesn't make sense.

Li Zhao gently approached the box and sniffed the gap with his nose, but there was a pungent feeling, and he was puzzled.

It stands to reason that hydrogen has no smell, but it obviously has a strong pungent feeling in it, which makes no sense, but he quickly thought of the key point.

Oxygen is required for the combustion of hydrogen, and the oxygen in the air is not pure, so if hydrogen wants to burn violently, it must have a highly flammable gas, such as pure oxygen.

But pure oxygen is also colorless and odorless, and this highly pungent taste is obviously not pure oxygen, let alone unreasonable.

Could it be that it is not hydrogen, but other unknown flammable gases?

Li Zhao felt that the more he thought about it, the more ridiculous it became, this was just Daqin, an era that had not yet been civilized, how could there be so many inexplicable things.

It's hard, one word comes to mind in the depths of my mind, fluorine.

Fluorine gas is a very strong flammable gas, his flammability is more violent than pure oxygen, and there is a strong pungent odor, as for what pungent smell, Li Zhao has not been exposed to it, he just learned about it from the Internet in his previous life.

In this way, the pungent smell in the box makes sense, and there is a mixture of hydrogen and fluorine gas hidden inside. Or maybe there are other gases that cause the hydrogen to not rise so quickly after it gasifies.

Anyway, he couldn't explain these things, so he simply didn't want to.

However, the next moment, his face changed in shock.

Daqin has no concept of hydrogen and fluorine at all, so naturally it will not produce such a thing by itself, it must come from the future, that is to say, the box and the giant key are generally products from modern times.

This was not what made his face change, but what was shocking was that the mixture of hydrogen and fluorine was a fuel, and it was an explosive, how did this thing appear here, and for what purpose?

Everything is weird and terrifying.

The giant key is a radioactive element, and the radioactive element is the main component of nuclear weapons, and the same is true for hydrogen, and the two terrifying energy sources appear in Daqin, which has to make people think deeply.

"Is there a hand in control of all this, or is someone trying to destroy the whole world?"

Whether it is an atomic bomb made of radioactive elements or a hydrogen bomb made of hydrogen, it is a shocking existence for the world.

The existence of two giant keys and boxes provides the conditions for this, of course, this amount is not enough to create a terrifying nuclear weapon, but what if there are still a lot of lurking? That's shivering.

Thinking about it, Li Zhao was scared for a while, but he couldn't think of anyone who had such an ability to use these things, even if he was a traverser.

Could it be Xiang Gong? Unlikely, if Xiang Gong's identity is not wrong, he should just be a person who traveled through the Ming Dynasty and does not have the ability to create nuclear weapons.

Green girl?

The green girl is rumored to exist, no one knows who it is, whether she is also a traverser, or she is a fairy at all, there is no way to know, of course, the fairy's statement is a bit excessive, there is no fairy in this world, besides, if she is really a fairy, there is no need to manipulate any nuclear weapons, the fairy law is much more useful than nuclear weapons.

"Alas! Maybe I'm thinking too much, maybe these things have traveled from my previous life like me, and now they are abandoned here. ”

And only this explanation makes sense.

But the next moment, his face changed again.