Start with a photographic memory and build a memory palace

Chapter 206: Photoreceptors, polychromatic vision
……

among them.

One little girl particularly caught Wu Wen's attention.

Because compared to the strange insect transformation phenomenon that occurred in other children, her body did not change at all.

Only her pupils showed a beautiful dendritic pattern, as if she was wearing cosmetic contact lenses.

Wu Wen walked up to her.

Seeing the girl's nervous expression, Wu Wen stared into her eyes and observed her carefully.

After a while.

Wu Wen casually tore off a small piece of azure blue cloth from the corner of his clothes, placed it in front of her eyes, and asked softly: "Tell me, what color is the cloth in my hand?"

“Yes… there are many colors, blue, green, red…” the girl answered in a low voice with some fear.

Listening to her answer, Wu Wen thought to himself: It is true.

In the eyes of normal people, the piece of cloth in his hand is azure blue, but in the eyes of this little girl, the piece of cloth is colorful.

This is because she has more color vision receptors: cones, than the average person.

Cones are a type of photoreceptor cell in the retina, consisting of four parts: outer segment, inner segment, cell body and end foot. They are named because their outer segment is cone-shaped.

It can receive light stimulation and convert light energy into nerve impulses. It is the photoreceptor in the eye.

Normal people have trichromatic vision, meaning there are three types of cones in their eyes, each of which can distinguish about a hundred shades of the same color.

Through permutations and combinations, the three types of cone cells allow normal people to see about one million colors.

However, some people in the world are born with a stronger sense of color and have tetrachromatic vision, that is, there are four types of cones in the eyes, which can see more than 100 million colors.

But compared to the girl in front of him, her visual ability is far more than just four types of cones.

Her insect transformation seemed to be concentrated in her eyes, but unlike the compound eyes of the flower slave after transformation, her eyes seemed to have completed the evolution.

The structure of her eyes contains more types of cones, or each type of cone has a more delicate perception of color.

The three types of cones are primarily responsible for sensing red, green and blue light, respectively, and color perception is formed by measuring the amount of these three colors in the light reaching them.

Therefore, in the eyes of a trichromatic person, all colors are located in a "cube" composed of three "dimensions" of red, green and blue.

If you have four types of cones, the space of color perception will expand into a four-dimensional superbody.

Light is a wave of energy moving through space, and its wavelength defines the "color" of the light.

Wu Wen looked at the girl in front of him.

Her eyes can see more colors, which is equivalent to being able to perceive a wider range of light waves.

This is exactly what Wu Wen needs right now.

Energy waves are just one piece of the three-piece puzzle.

"Life is indeed the most miraculous product of nature!"

Wu Wen couldn't help but sigh.

Hua Nu, who was standing by, saw that Wu Wen was staring at the girl in front of him. She saw greed in his eyes, but in fact it was a look of curiosity and desire, and her heart suddenly tightened.

Then he quickly stepped forward, took the girl in his arms, and said respectfully to Wu Wen: "My Lord, what should we do with these children?"

Seeing Hua Nu's unusual behavior, Wu Wen realized that his behavior just now might have caused him to misunderstand. He couldn't help but smile and replied:
"I'll leave them to your care."

Suddenly, Wu Wen changed the subject, pointed at the girl in her arms, and said with a smile: "But I will take care of her alone."

As he spoke, Wu Wen reached out and gently pulled the girl in front of him, and asked calmly, "What's your name?"

"I... don't have a name!" The girl's body tensed in fear, and then she answered incoherently.

"You don't have a name? Then I'll help you come up with one. How about calling it: Colorful Eyes?" Wu Wen said with a smile.

Hearing this, the girl seemed to have no objection to the name. Although she did not respond, she nodded slightly.

Afterwards, Wu Wen ignored Hua Nu's reaction, picked up the girl, and then jumped out of the cave.

Hua Nu looked up, and after Wu Wen's figure disappeared at the entrance of the cave, he heard his voice again: "I will be gone for a while, you wait for me here."

—

Leave the underground space where the palace is located
Wu Wen found He Li and others who were temporarily taking shelter in the underground passage of the treasure cave.

"Master Hou!"

When they saw Wu Wen appear, everyone who had been waiting for a long time immediately saluted respectfully.

He Li also showed a relaxed expression on his face at this moment. He really hadn't seen Wu Wen for a long time.

Although he knew that nothing would happen to this marquis with his ability, he was under increasing pressure after having no news for such a long time.

It has been almost a year since I left Dingxiang.

Although the Great Khan knew that Wu Wen had come to the Western Regions, problems would inevitably arise over time.

If the news leaks out and is known by the imperial court, that's one thing.

On the other hand, there may be chaos within the Turkic people.

The main reason why Ashina Simo was able to sit firmly on the throne of the Great Khan was that the reputation of Marquis Wu Wen made it so that the other tribes dared not have any dissenting thoughts.

If other tribes on the grassland knew that Wu Wen had disappeared for so long, there would definitely be trouble.

In addition to internal reasons,

The Turks still have an external threat that has not been resolved.

Those are the fifteen Tiele tribes in northern Mobei.

Originally, these fifteen tribes in the northern desert had been suppressed by the Turks, but since the end of the Sui Dynasty, they launched a resistance, and the Turks gradually weakened their control over them.

In particular, the Xueyantuo among these fifteen tribes developed the most rapidly, and in recent years even unified the fifteen tribes in northern Mobei.

If it weren't for the sudden rise of Wu Wen, the Marquis of Dingxiang, who quickly took control of the Turks with his absolute power, the Xueyantuo would have been frightened and dared not move.

These fifteen tribes in Mobei will definitely fight with the eighteen tribes of the Turkic steppe.

Therefore, if they knew that Wu Wen had disappeared, there would definitely be chaos on the grassland, and Ashina Simo's position as Khan would become even more unstable.

"Ok!"

Wu Wen nodded to everyone, and then said in He Li's expectant eyes:
"We have been out for long enough. Let's go back to Dingxiang now."

Upon hearing this, the five hundred elite Turkic cavalrymen who had followed Wu Wen to the Western Regions cheered together.

They had been out for too long and had long wanted to go home. Moreover, life in the windy and sandy environment of the Western Regions was really uncomfortable, so they were naturally very happy to be able to leave.

He Li also breathed a sigh of relief, as if a huge stone had fallen from his heart.

Wu Wen naturally took into consideration all the worries in his heart, so after realizing the time issue, he proposed to return to Dingxiang immediately.

Wu Wen turned around and looked at the treasures in the cave, and said, "Take as many of these treasures as you can. They are my reward to you."

Hearing this, everyone cheered even more.

While they were frantically snatching these treasures, He Li looked at the little girl behind Wu Wen and asked curiously:
"My Lord, who is this?"

"Her name is Caitong, and she will be my maid from now on." Wu Wen answered casually.

He Li nodded slightly and asked no more questions.

For this girl who suddenly appeared, it is enough to know her identity, and there is no need to ask any other questions.

Wu Wen turned his head to look behind him at the colorful eyes that were as frightened as quail.

The reason why he took the trouble to bring her with him was because he wanted to study her special eyes carefully.

From a certain perspective, her eyes are like an "inner elixir" or an "engine"!
As long as he can study it thoroughly, Wu Wen will be able to master the corresponding "light sensing ability", that is, he can sense energy fluctuations within the corresponding spectral range.

……

(End of this chapter)