There are many small fish and shrimp living under the crystal clear water.

Occasionally, one or two small salamanders can be seen hurrying under the cracks in the rocks.

The cave creatures have been seriously degraded due to not seeing sunlight for a long time, and the color on their bodies has gradually disappeared.

"You can choose to eat small and aggressive. ”

Zheng Wenlou squatted down on the shore, looking through the water to find the blood of his favorite animal, but in the process, he found a few very large and stunning stones, and then he stretched out his hand and fished them out directly from the bottom of the water.

The stones come in different shapes, but their colors are particularly eye-catching.

Some are like blood red, some are waxy yellow, some are like mud green, this is the unique Gobi stone of the desert wasteland, the beauty is abnormal, and it is respected by the stone world, and one of the crystal clear is the fine "gem light" in the Gobi stone boutique.

Several pieces of Gobi stone have been smoothed out under the washing of the river for many years, smooth and wet, Zheng Wenlou can feel a cold feeling in his hand, if the master carves it and then takes it to auction, its price can make people rich overnight.

"It's not bad to practice carving in the future, and you can make some small toys for Xiaotong. ”

Zheng Wenlou smiled slightly, and casually put the stones on the bank of the river, there are many stones like this under the water, and they can be used when the city is built in the future, and it can be used as a good decoration just by polishing it.

In this way, there are so many fine Gobi stones in isolated places, and if they were placed on the desert plains outside, they would have been picked up by villagers and tourists long ago.

Zheng Wenlou didn't waste too much time on the stones, and continued to look for small creatures that met the requirements.

Suddenly, a faint point of light under the water in the distance caught his attention.

It wasn't the reflection of light, because his flashlight didn't shine at that place at all, and the light point was quite far away from him, if it weren't for the fact that the surrounding environment was too dark and the faint light point seemed very special, otherwise it wouldn't have attracted his attention at all.

The point of light flickered under the water, and it seemed that there was a sign of extinguishing at any time, which made Zheng Wenlou couldn't help but froze.

"What is this?"

Zheng Wenlou's face was overjoyed, and without hesitation, he walked over directly.

Something that can glow, this is a great discovery.

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Zheng Wenlou approached the position of the point of light, and put his steps very lightly, because he was afraid that his arrival would scare the point of light away, however, his worry seemed to be a little redundant, until he approached the point of light, he didn't see any overreaction to the point of light, but because of the rippling water waves, the other party was pushed far away.

"What the hell is it?"

Zheng Wenlou turned off the flashlight, and saw that in the dark, the faint light of purple and blue flickered in the water from time to time, like a playful elf, which made him look very surprised.

Neither insects nor fish, about one-fifth of a millimeter in size, a point, just a point, it is difficult for ordinary people to see with the naked eye, if it were not for Zheng Wenlou's excellent eyesight, such a faint point of light would make people subconsciously ignore it.

"Is it a microbe?" Zheng Wenlou carefully took the "light spot" out of the water with his hand, and then his eyes widened to see the other party's appearance clearly.

This is a very small underwater microorganism, the body is transparent, headless and tailless oval, when it leaves the water surface, it does not see any excessive struggle reaction, just stay quietly in Zheng Wenlou's hands, soft as satin, carefully observe, the bottom end of the microorganism also has thin hairs, a bit like antennae, gently sliding in the water stains that are about to run dry, much like a jellyfish in the ocean, but it is not.

At this moment, there was a little bit of purple-blue light flickering in the crystal clear body of the microorganisms, and it was this special place that attracted Zheng Wenlou to him.

A microorganism that glows!

Zheng Wenlou looked at it carefully as if he had picked up a treasure.

In this place where the sun could not be seen at all, he had also considered how to replace the light source.

Firewood lighting is a last resort, and the best solution is to breed a group of species that can emit light.

As far as he knows, there are many plants and animals in nature that have the ability to emit light at night.

For example, fireflies, fireflies, jellyfish, mushrooms, etc., among which luminescent plants are the most common, such as scaly fan mushrooms and lantern mushrooms, which are fungi plants with strong luminescence ability.

There are more than 70 species of luminescent fungi in the world alone, and if the scope is expanded, there will be even more, and some mosses, fungus, and aloe vera also have the ability to glow at night.

The most well-known is the biofluorescent bay.

There are only eight places in the world known as fluorescent bays, including two in China, which is a miraculous phenomenon formed by the large number of single-celled microorganisms called dinoflagella.

Like fireflies, they emit biological light to illuminate the bay, giving them a stunning picture that can only be seen in movies and anime, and attracting a large number of tourists to shoot and watch when they appear.

Dinoflagellates are a type of noctilucent insect algae that are very common, but large-scale aggregations are rare.

When Zheng Wenlou's family road was not dilapidated, he had traveled with fox friends and dog friends once, and the microorganisms in front of him had to make him associate with this aspect.

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Is this a dinoflagella?

Will there be dinoflagellates here too?

Although dinoflagellates also live in freshwater areas, Zheng Wenlou is not sure, because he has never seen the appearance of dinoflagellates with his own eyes, that thing is too small, ordinary people can't see it clearly without a magnifying glass, but it is certain that what is in front of him is also a kind of microorganism that will emit light on its own! And it does not need to photosynthesize like most luminescent animals and plants!

Whether this microorganism has been discovered by the biological world, Zheng Wenlou does not know, but it can solve the biggest problem he is facing now, the light source.

Collect and cultivate it, and the entire underground space will be free from the darkness from now on.

It stands to reason that microorganisms also need to eat, and plants can absorb green blood, and there is no reason why microorganisms can't absorb it, no matter how bad it is, it can use Xiaotong's green light of life to make a big bulb out.

The surprise came so suddenly that Zheng Wenlou seemed a little excited, and his eyes frequently searched around, trying to find the second point of light.

Since there is one, it is impossible to sing solo, right?

Sure enough, he soon found traces of the second, third, and fourth points of light.

The distribution of light points is quite far away, and they are all in deep and unnoticeable places at the water level, coupled with the fact that the biological light they emit is very weak, making it difficult to detect their existence, and ordinary people can hardly see it with the naked eye, as if they are a little elf playing peek-a-boo under the water.

With Zheng Wenlou's careful search, and even went down to the bottom of the water to search, he found that the number of luminous microorganisms in the bottom of the dark river was even more amazing, dozens or hundreds, one by one, quietly suspended on the riverbed seven or eight meters deep.

"Could it be the battle between the beckoning cat and the glass fish just now, and the chaotic torrent washed them out of the water?"

Zheng Wenlou was puzzled, this statement is very likely, because most of the light points he has found so far are hidden under deep water, if it weren't for the chaos caused by the previous war, he might have missed this underwater microorganism that can provide a light source.

Although the number is not large, and the light is not strong, with him and Xiaotong here, they can completely replicate the scene of the "Fluorescent Bay" in the underground space.

"This trip is good, several problems in the construction of the city have been basically solved, and the rest is to expand the results and create a fairy tale world that truly belongs to Xiaotong. ”

Zheng Wenlou was in a very good mood, and he concentrated all the microorganisms he found into a bottle.

When the number of light spots increases, a touch of purple-blue fluorescence looks extremely dazzling in the dark, like a dream!

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