Chapter 466 Twenty Thousand Feet in the Sky

Zhang Hao's conjecture is not necessarily correct, and it is difficult for the laboratory to find a way to separate the aura in a short time; but it is relatively simple to capture the aura at high altitudes.

Fu Yun drove the flying boat, took the spirit gathering array and the spiritual energy collection device and set off.

The flying boat soared to an altitude of 20,000 feet like lightning. The aura here is already very thin, even if Fu Yun tried his best, he could only stay there for half an hour.

At this height, the heavy gravity has been revealed. In addition, the spiritual energy is thin and the power of the spirit stone is not enough to support the flying boat. Therefore, Fu Yun needs to use the true energy of the transformation stage to support it.

But for half an hour, only a poor '20 liters' of spiritual energy was gathered. 'Lift' is the measurement standard for aura in the Zhang Family Research Base. The volume of one liter of aura under ground pressure and normal temperature.

In fact, one liter of spirit energy is very small, and the spirit energy of a piece of low-grade spirit stone is fully released, which is a full cubic meter—a thousand times that of one liter.

And if you want to do experiments, you need at least 30 cubic meters of aura! The ray of spiritual energy in the previous experiment was compressed by more than 30 cubic meters!

And 30 cubic meters is only enough for one experiment!

"1500 more times to fly..." Fu Yun suddenly felt a little hopeless!

In order to collect the "possible and pure spiritual energy" as much as possible, Fu Yun flew to the limit of his ability, but at an altitude of more than 20,000 feet, the spiritual energy is very thin, and the efficiency of the spirit gathering array is pitifully low!

This is like sending an air compressor into space, no matter how powerful it is, it will be blind!

Thinking about the aura that would take more than a thousand times to fly into the sky for one experiment, Fu Yun was a little crazy at this moment—I know that the Zhang family's secret scientific research is amazing, but the research process is also amazing!

Fu Yun landed on the ground and explained the situation.

Zhang Hao smiled embarrassedly, "I didn't expect the efficiency to be so low. Seniors don't have to go anymore, we have other ways."

"any solution?"

Hot air balloon! Zhang Hao pointed to the public experiment base in the distance.

Dayang Group's hot air balloons were a sensation when they first came out, but soon everyone began to despise them—flashy!

We can fly ourselves, why fly in such a piece of crap. There are also merchants who want to use it to transport goods, but after experiencing it, they also decisively gave up.

Then everyone came to a conclusion: the reason why Dayang Group publicly tested this hot air balloon is that this thing is really useless, so people don't care!

With this conclusion, the result is naturally predictable. And Dayang Group conducts research on hot air balloons in this way.

Now that half a year has passed, hot air balloon technology has become very mature. And today, it is a milestone experiment - hydrogen balloon!

With the advent of electricity, the laboratory finally obtained the electrolysis of hydrogen, and the first element in the periodic table was confirmed.

But this test is not easy, Zhang Hao personally performed the dangerous characteristics of hydrogen - deflagration! When air and hydrogen are mixed, a violent explosion will occur; when the quantity is sufficient, its power will make Fu Yundu change color.

"Are we going to take a balloon made of this thing to the sky?" Fu Yun was trembling a little at this moment. Why has technology developed to the present, and there is a rhythm of death?

Zhang Hao shrugged: "Does senior have a better idea?"

Fu Yun: ...

Zhang Hao continued: "My idea is that after the spirit-gathering array is activated, the balloons will be launched directly into the sky. After the spirit-gathering array has been running for a while, seniors will drive the flying boat up to have a look and collect the gathered spiritual energy."

This...Fu Yun was a little hesitant.

Zhang Hao continued: "Senior, once you succeed in studying the spirit energy, you will have countless spirit energy to use for cultivation. At that time, you may use it for a few years to reach the late stage of the transformation stage, or even the peak.

In the future, there may be an opportunity to explore the realm above Huashen! "

Fu Yun's originally hesitant look became firm in an instant!

The adjustment of the hydrogen balloon took more than ten days, and the first hydrogen balloon finally took off.

The balloon is woven with the silk of the best demon silkworm that is cultivated artificially, and the surface is impregnated with excellent beeswax to complete the seal. Even so, there is a hydrogen compression tank in the hanging basket to replenish the hydrogen that may be missed at any time.

The length of this hydrogen balloon is more than 50 meters, and the diameter expanded on the ground is 5 meters. The total weight of the lower hanging basket and various items is 800 kg. Mainly hydrogen tanks, aura replenishment devices (manual operation is required), and spirit gathering arrays.

On the hydrogen balloon, there are two people, both in the Nascent Soul stage. At high altitudes, the spiritual energy is thin, the air is thinning, and the living conditions are harsh. Only the foundation of the Nascent Soul stage can be qualified for the work here.

Now Dayang Group already has considerable experience in high-altitude exploration, and is very clear about the high-altitude environment.

After the hydrogen balloon is launched, it will stay at high altitude in principle; Fu Yun is personally responsible for changing people every day.

The hydrogen balloon slowly rose into the sky, but not many people around paid attention—no one knew that a super-secret experiment beyond imagination was launched right under everyone's noses!

Art of War: Do not doubt what is common!

Fu Yun took a flying boat to protect and follow the hydrogen balloon. In case the hydrogen balloon explodes, Fu Yun also needs to be responsible for saving people—although the two Nascent Soul Stages should not fall to death~~

The hydrogen balloon rose slowly, and Fu Yun also rose slowly following the hydrogen balloon.

A thin rope made of natural silk hangs below the hydrogen balloon. It is very thin and light, but it is enough to hold the hydrogen balloon! The cost of this silk rope is as high as a terrifying million high-grade spirit stones!

People use silkworms to make hidden weapons and strings, and Dayang Group uses silkworm silk to weave a rope that is more than 30,000 feet long and hundreds of kilometers long!

The sky silk used almost emptied the entire Fertile Land Continent's inventory.

Of course, no one knows, Zhang Hao looked at the crystal clear silk rope, but felt infinitely emotional - if this is on the earth, where can I find such a material!

A celestial silk rope looks expensive, but technology is priceless! Because of the assistance of these spiritual materials, Dayang Group's technology can advance by leaps and bounds-for the time being, there are very few material difficulties.

The hydrogen balloon is flying higher and higher, but it does not show any effort; the two people in the basket are only responsible for inflating the balloon. Of course, the temporary inflation speed should not be too fast.

Fu Yun finally discovered the advantages of hydrogen balloons at this time.

The airbag began to grow larger, and the folds on it began to disappear little by little, especially the top of the airbag, which became more and more rounded.

It took more than half an hour for the balloon to finally rise to a height of about 20,000 feet. At this time, the spiritual energy was obviously thinner, and the ferocity of gravity began to be revealed.

The original gravity of this planet is ten times the gravity felt on the surface. At this time, the upper end of the hydrogen balloon began to change significantly.

The balloon began to expand at an accelerated rate, but the height and elevation of the balloon were very slow.

The heavy gravity began to prevent people from exploring.

But Dayang Group had already prepared, the hydrogen balloon began to inflate, and after a large amount of hydrogen rushed in, the previously shriveled hydrogen balloon began to expand a little bit, and the volume unexpectedly expanded by almost one-third; then the hydrogen balloon continued to rise!

But inside the hanging basket, the complexions of the two Nascent Souls began to change.

At high altitude, the aura is thin - the abilities of spells and other abilities of the cultivators cannot be used, and they can only rely on the true energy in the body and their physical constitution to resist.

And the air at high altitudes has also begun to thin, and the temperature has begun to drop; such an environment is not very dangerous for a cultivator in the Nascent Soul Stage, but... it's really uncomfortable!

As the hydrogen balloon gradually rises, the surrounding aura becomes thinner, and the gravity rises rapidly. But the hydrogen balloon is still going up.

According to the calculations of Dayang Group's scientists, it should stop when the gravity is 9.8 times the standard - and it is not yet.

9.8 times the standard, almost completely out of the aura layer. Huang Mingshan and others estimated that the aura here should be the purest.

The hydrogen balloon has risen to a height of about 5,000 feet, which is about 17 kilometers; at this time, the distance between the balloon and the ground is almost 85 kilometers in vertical height.

According to the pressure gauge altimeter, the altitude is 84170 meters!

Looking down from this height, the earth is picturesque, the mountains are like eyebrows, and the white clouds are floating leisurely under the feet.

But Fu Yun had no choice but to stop at an altitude of 67 kilometers, and then he had to descend to an altitude of 50 kilometers before he breathed a sigh of relief.

At this time, Fu Yun looked up at the hydrogen balloon in the sky, and there was only a small dot, only a crystal silk rope connected to the ground, and this rope could only be seen when he got close.

At this moment, Fu Yun suddenly let out a long sigh: Dayang Group has created another miracle, flying to a height that even the Transformation Stage could not reach. But Dayang Group didn't seem to notice it.

But speaking of such a high altitude, how can I go up to get spiritual energy and transport people? This seems to be... beyond my ability! Even if Liu Dingshan were to come, he would not be able to climb to this height!

When Fu Yun returned to the ground, Zhang Hao was also a little dazed...you can't fly to this height even with you. Then there is no way, Zhang Hao can only let people send a binary signal to the two people in the sky through the communication jade plate:

Before dusk, return to the ground.

As for the hydrogen in the balloon, there is no way to recover it for the time being, so it can only be released. Fortunately, hydrogen is not a rare resource.

Dayang Group's hydrogen balloons took off for several days, and finally attracted a lot of attention. Especially around the Dayang Group, there are many masters who have come from all over the world, and they are very concerned about the Dayang Group.

But unfortunately, Dayang Group only said to test hot air balloons...yes, hot air balloons! Not a hydrogen balloon!

If you really want to go up to that height in a hot air balloon...not likely.

But Zhang Hao thought: Even if I tell you 'hydrogen', do you know what it is? So, it is enough to tell you the name of a 'hot air balloon'.

It took five days for the balloon to go up and down, and finally collected 60 cubic meters of aura; this aura was enough for two experiments.

But the task of collecting aura is not over yet, it will continue!

And in the evening of this day, when the huge original hydrogen balloon slowly fell from the sky, missions from the East, the East of Kunlun Continent, and the Liang Dynasty appeared.

They finally arrived in Changshan Town...well, it is now called Changshan City.

"What is that!" Gao Dashang pointed to the hydrogen balloon in front and asked the local tour guide.

(I have something to do today, the next update may be at night.)