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Looking at Su Liu'er's sorrowful face, Chu Xingyun said: "Why don't you use the technique of soil control to build a dark room and test it yourself?"

Yeah ...

With a slap in the face, Su Liu'er jumped up screaming excitedly.

Soon, Su Liu'er urged the talent of controlling Wuwuling and quickly built a huge dark room.

Later, Su Liuer released three ghost bats hunted last night and experimented in the dark room.

Due to the shadow bat, it only appears after midnight.

Therefore, Su Liuer still has a lot of time to test slowly.

After continuous testing, Su Liuer finally reached a conclusion.

These shadow bats use sound as a means of detection.

When the shadow bat flies, a biological wave that is inaudible to humans is emitted from the mouth and nose, and will bounce back after encountering prey. After receiving it with your ears, you will know the specific location of the prey, so you can go to catch it.

Therefore, as long as this sound wave can be absorbed and the sound wave can not be bounced back, the eyes and ears of the shadow bat can be concealed.

To some extent, as long as the sound wave is absorbed, it can be invisible in front of the Shadow Bat!

It was really difficult for someone else to absorb sound waves and avoid their rebound.

But for Su Liu'er, it was too simple to think about.

Su Liu'er's resting sand can absorb all the energy, even the ripples released by Yuanshen can be absorbed by resting sand.

Therefore, Su Liu'er only needs to cover the whole body with the sand, and can absorb the sound wave detection of the shadow bat.

After testing, Su Liu'er shrouded Quan Sen with the sand, and when he entered the dark room, the bats flying around crashed on her one after another.

Even if they were close at hand, those shadow bats could not feel the presence of Su Liu'er.

In a moment of thought, Su Liuer spread the sand mist formed by the condensed sand into a breathing sand mist group with a diameter of thousands of meters.

In this way, all shadow bats flying into this area will be instantly captured by Xisha, don't want to move.

After the experiment was successful, Su Liu'er couldn't help but cheer up.

Sure enough, as Chu Xingyun said, as long as you use your brain, observe more, organize more, study more, and think of ways ...

She can do it ...

Happy, at midnight, finally came ...

Between heaven and earth, a large number of shadow bats began to dispatch.

Over the next night, Su Liu'er was riding the mist of resting sand, floating slowly on the sky.

Wherever he passed, shadow bats constantly rushed into the sand curtain and became Su Liu'er's prey.

A whole time passed, when dawn fell again, Su Liuer had successfully captured more than 3,000 shadow bats, and the efficiency was improved by a hundred times!

Under the caper, Su Liuer shouted, let Chu Xingyun take her to continue to swim in the mountains, eat delicious, drink delicious.

As the saying goes, it is delicious, spicy ...

Faced with Su Liu'er's proposal, Chu Xingyun certainly would not refuse.

For many consecutive years, he owed her too much.

Therefore, for the next whole day, Chu Xingyun accompanied Su Liu'er to play around, eating delicious, spicy, looking at the beauty of the world, and the great rivers and mountains.

Until the evening, the two returned to the pond again. Handing over a glass of rainbow wine, Chu Xingyun smiled and looked at Su Liu'er: "Although, your efficiency is now enough to ensure that you won the championship of this assessment, but ... if you think about it, is there any other Approach can increase efficiency

What? "

This……

Hearing Chu Xingyun's question, Su Liu'er suddenly opened his eyes.

Obviously, although the efficiency is now very high.

As Chu Xingyun said, winning the championship this time is no longer a problem.

But in terms of hunting efficiency alone, this is by no means the limit.

Quickly thinking, Su Liuer said: "To be precise, as long as the movement speed is increased, the efficiency can be greatly improved."

Each time the speed is doubled, the efficiency should be doubled.

Nodding his head, Chu Xingyun said: "Yes, increasing the speed will indeed increase the efficiency of hunting, but ... Have you thought about it, increasing the area of ​​the sand curtain will also increase efficiency?"

Yeah!

Hearing Chu Xingyun's words, Su Liu'er suddenly opened his eyes and said, "Do you mean to condense the mist of resting sand into a big net, like a fisherman, pull the big net and hunt the shadow bat ? "

Nodding with a smile, Chu Xingyun said: "Yes, the sand fog is condensed into a sand net, and its coverage area will be increased tenfold!"

Nodding excitedly, Su Liu'er said: "It turns out this way, it seems ... there is no end to improving efficiency!"

Looking at Su Liu'er with a smile, Chu Xingyun shook his head and said: "Although theoretically, the hunting efficiency is almost endless, but in fact, there are limits."

After a pause, Chu Xingyun said: "Before midnight, you work hard to think about it. Think about it, and see if there are any ways to increase the efficiency of hunting."

Hearing Chu Xingyun's words, Su Liu'er nodded cleverly, frowning her beautiful brows while tasting rainbow wine while thinking hard.

I thought of ...

For a while, Su Liu'er raised his head violently and looked at Chu Xingyun.

In the eyes that Chu Xingyun looked forward to, Su Liu'er said: "In fact, as long as we have been flying along the direction of the sun setting and maintaining a certain speed, we can always be at midnight and continue to hunt."

Snapped……

With a slap in appreciation, Chu Xingyun smiled and said, "Yes, that's exactly ..."

The so-called day and night are just animal planets, which are produced by their own rotation when they revolve around the sun.

Just like those ancient heroes on the planet, keep a certain speed and continue to run.

You can always be on the back of the planet, always in the middle of the night.

In this way, you can continue to hunt those shadow bats.

Su Liuer looked at Chu Xingyun excitedly and listened to his generous praise.

Su Liu'er is not stupid ...

On the contrary, as far as wisdom is concerned, now she is no worse than Chu Xingyun.

Therefore ... Su Liu'er can clearly feel that Chu Xingyun's love for her is even doting.

At this moment, Su Liu'er also knew that Chu Xingyun was trying to cultivate her and nurture her, hoping that she would become a talented woman and be a wonderful woman with both beauty and wisdom.

And this is precisely Su Liu'er's biggest dream.

If she doesn't become such a strange woman, how can she be worthy of her brother Yunxing?

Between the capers, Su Liuer suddenly thought of a problem ...

Lifting his head blankly, Su Liu'er looked at Chu Xingyun with doubt: "What I can think of is basically that."

Although you continue to think about it, you can fly around in the dark.

Try to increase the speed and the area covered by the sand curtain as much as possible ...

But in theory, there is no limit.

The speed can be faster and faster ...

The sand curtain can get bigger and bigger ...

How can this have limits! Listening to Su Liu'er's doubtful voice, Chu Xingyun couldn't help laughing.