In the twinkling of an eye, three months passed. Zhang Yuan led six young men and women in the laboratory to take a small transport plane to the interstellar trading market for the second time, accompanied by some interstellar soldiers and rotating human diplomats.

Their main counterparty this time is the TOS civilization, which is good at magnetic field perception. Human beings are very interested in this strange race, not only its physiological structure, but also the history and culture of this civilization.

Of course, the history and culture of other people's homes are not so easy to obtain. Even human beings can't publicize their own culture and ideas for no reason. This is a very taboo and affects their own safety.

Talking about this, Zhang Yuan solemnly said: "so, don't talk nonsense even if you are curious. Our main purpose is to buy some magnetic field sensing organs of TOS civilization, that is, biological organs. If you can buy more papers, it is also good. If there are no ready-made biological organs, it is still too difficult for us to fabricate one out of thin air. "

"But will they sell? I think it's probably not. Even if you buy with amoeba points, the other party can't be willing. " Said a boy wearing glasses.

The cells in an organ must contain all the genetic material of the TOS civilization. If humans get these genetic materials, they can easily clone a TOS!

This is also one of the great taboos in interstellar etiquette.

Think about it, if other civilizations cloned human beings, then use this cloned human to do biological experiments and dissect him. Even if the clone does not belong to the will of mankind, there will still be a big wave within human civilization, and then there will be huge contradictions between the two sides, and even war is not impossible!

Or, a malicious civilization has created a specific biological virus against human genes.

Therefore, within human civilization, it is strictly prohibited to sell any cell about itself, not even a hair.

The same is true of TOS civilization in theory.

Zhang Yuan smiled: "so ah, the mutual trust between civilizations is very difficult. Even a cell is unwilling to be exposed... But it doesn't rule out that civilization that doesn't matter to this kind of ethics depends on it anyway."

"If we really can't, we can only retreat to the second place..."

Soon, reaching the inner ring trading area, the human spacecraft was connected to the TOS communication signal.

Due to several transactions, the relationship between the two sides is fairly passable.

"Dear human civilization, what new ideas do you have?" The strange looking alien life said on the screen. This is the first time they appear on the screen.

He looks like a large giant salamander. His limbs are longer than that of a giant salamander. He has a total of six fingers. He is very flexible. The only difference from a giant salamander is that there are no eyes on his head, instead of two raised tentacles.

In other words, the civilized individuals can't feel any light, which may be because in ancient times, they lived in a dark cave and couldn't touch the light.

Because of this, the technology tree of the TOS civilization is very different from the general interstellar civilization. Their technology products don't need screens that emit light, but devices that emit special magnetic fields.

Changes in the magnetic field make up the text and pictures of this civilization.

Their most commonly used tool is a strong magnet. When a strong magnet contacts other ferromagnetic materials, some materials will be magnetized and magnetic. In this way, it can be easily identified through magnetic field induction to form pictures and words.

Of course, the brain of TOS people can sense the magnetic field, but they can't feel the high-frequency electromagnetic wave, let alone launch the electromagnetic wave, so they still speak. The frequency of the sound is very high, all of which are ultrasonic waves. This kind of ultrasonic wave is a kind of perceptual complementarity.

For human ears, high-frequency sounds are completely inaudible.

Therefore, they perceive the outside world through magnetic field, ultrasonic, touch, smell and taste, which makes up for the lack of eyes to a certain extent. But only to a certain extent.

When the TOS learned about electromagnetic waves, they also longed for light.

These are basic civilization materials.

After Zhang Yuan explained his intention, the guy on the screen twisted his body, and a line of text appeared on the human screen: "I'm sorry, dear human, according to the internal safety regulations, we can't sell our organs, even if you pay a large amount of amoeba points, we still can't."

"In fact, the vast majority of interstellar civilizations with the same morality cannot do so."

"It doesn't matter, it doesn't matter, we can understand!" Zhang Yuanlian hurriedly said: "we just want to get scientific and technological information in this regard, but if we don't have a ready-made organ, we really can't design it out of thin air..."

He soon put forward another plan: "if your civilization is willing, we can apply for an open biological laboratory in the interstellar trading market to exchange each other's sensory cells. The whole experiment is open to each other. It is not allowed to measure the gene sequence. After the experiment is completed, all specimens will be destroyed. Except for the data, it is not allowed to carry any out of the field. "

"We are willing to provide eyeballs of 167 different creatures, including human eyeballs, and share knowledge about bionic eyes. What do you think of this condition?"

Zhang Yuan added: "of course, the points of the biological laboratory are paid by us."

Just borrow a laboratory. At most 0.1 amoeba points will be done.

After listening to Zhang Yuan's trading plan, the TOS man across the screen thought for a long time, but he didn't say anything.

As a rare species that can sense the magnetic field, there are actually many exchanges with other interstellar civilizations

Similar experiments like Zhang Yuan's have been done, even more than a hundred times!

However, more than 20000 years have passed.

They still don't see the real light. Other interstellar civilizations left with the TOS' magnetic field sensing data, but the TOS have no eyes, and many experiments can't be done well, especially biological experiments - it's impossible to get a little magnetic field on all organic matter.

It is very difficult to obtain this information only by ultrasound and magnetic field.

It's too difficult, really too difficult, can't feel the light, just rely on the magnetic field, there are too many defects!

However, TOS civilization is a civilization with strong self-esteem and many tough scientists. It is impossible to do without any excellent quality from the difficult environment to the present.

After a long time, a contact came from the communicator. Scientists were willing to engage in such experiments because they got another chance

Free opportunity!

The tosian diplomat sighed, even though he knew that the experiment probably got nothing and was taken advantage of by the other party. However, even if it is one in ten thousand, we have to fight for it.

After this transaction was confirmed, the team led by Zhang Yuan couldn't help cheering. It took 0.1 amoeba points to have the opportunity to obtain relevant information. It's too happy for human beings.