Two days later, Zhang Hao bid farewell to the first train that transported rainfall equipment.

The train carried hydrogen balloons, hydrogen compression tanks, and a large amount of ultra-fine mixtures of stone powder, salt powder, flour, etc. Powders are easy to manufacture and can be made in large quantities.

As for dry ice, silver iodide, etc., with the current technical reserves of Dayang Group, there are still some difficulties and high costs. In comparison, it is not as affordable as powder. And the fog on the front line was thick, and the powder was enough to cause rain.

Accompanying the departure, there were hundreds of temporarily trained skilled workers of the Zhang family. The real skilled workers of the Zhang family are all baby bumps, and Zhang Hao will not let them take risks easily, especially when they leave the country of Qixia.

However, even the temporarily trained skilled workers have a certain technical foundation, and these people are the reserve force of the Zhang family, which is also precious.

And this time, the leader of the many personnel of the Zhang family turned out to be one of Zhou Xueyao's maids, Xiaoyue and Zhou Xiaoyue. The two maids followed Zhou Xueyao's surname.

Xiaoyue is no longer dressed as a girl, but as a rich lady, full of confidence and high spirits. The hot air balloon and hydrogen balloon projects are in charge of Satsuki and Kotake.

This time out, Satsuki won the lot and got the opportunity to let off steam.

Sitting in the carriage, Ming Xuozi and Hong Yunzi both looked at Zhou Xiaoyue with some doubts. Neither of them expected that the solution given by Zhang Hao would be taken care of by a little girl.

Xiaoyue's current cultivation is only the peak of the foundation building period, and in the eyes of Ming Xuozi and Hongyunzi, she is really a little girl. On the current battlefield, it is also a small tender grass.

As a result, Zhang Hao actually said that Xiao Yue was in charge of this matter, completely.

The two were watching, but Xiao Yue showed a generous and faint smile and quietly lowered her head to read the book. The book in her hand is a research manual that she and Xiaozhu led together, and it is a study of the atmosphere. The two little girls are already progressing to become environmental and meteorological experts.

Behind Satsuki, there were several young people in their teens and twenties, and everyone was discussing the plan that was about to start in a low voice.

Ming Xuozi and Hongyunzi thought about it, but they still didn't open their mouths after all.

It took less than three days for the train to reach the front line, and from afar you saw a fog like a moat between heaven and earth.

Ming Xuzi saw that everyone was unloading a large number of goods, he came to Xiao Yue's side and said, "Xiao Yue, do you want me to take you to the sky to see the situation?"

Xiao Yue smiled and shook her head: "Thank you, senior, I will probably take a visual inspection, if you want to detect the situation here, you need to go above the aura layer to find out clearly."

And above the aura layer...... Do you want to go up and have a look?"

Above the aura layer, Ming Xuzi thought about it, his eyes flashed with longing, and finally nodded. Although he was underestimated by a little maid, he really wanted to go above the aura layer to take a look.

As masters of the Transformation Period, everyone has more or less hit the top of the aura layer. But unfortunately, even if it is the peak of the transformation god, it can only stay in the sky for a moment.

Above the aura layer, without the aura, even in the transformation period, there is nothing that can be done. Out of the water, whether it is an ordinary small fish or a powerful shark, it can only fall.

Twenty huge hydrogen balloons were quickly assembled on site. The hydrogen balloons rose slowly, and one by one, behemoths more than 50 meters high, slowly flew into the air.

On the ground, many soldiers of the Xuanzhen Sect Alliance opened their mouths wide and looked at these balloons in surprise.

"Are the hot air balloons so big now?" Nangong Zhi asked Gu Xingdong next to him.

Gu Xingdong was a little embarrassed, "This ...... It was also the first time I had seen such a hot air balloon. In fact, the development of Dayang Group is very fast, and the speed is somewhat dizzying. I can still recognize this thing as a hot air balloon, it's not easy anymore. ”

"I recognized it......" Nangong Zhi rolled his eyes.

"Hehe...... Gu Xingdong laughed proudly, not embarrassed at all.

In the rear of the Xuanzhen Sect coalition army, twenty huge balloons slowly rose into the air, but the middle one rose the fastest, and Xiao Yue stood in the hanging basket, directing the movements of the rest of the balloons with a banner.

These balloons are different from the balloons used by the Ocean Group to collect Reiki in that they add a Reiki-powered fan that can be used as a power source. The fan is not big, but the power is considerable. Especially now that you are in the aura layer, you can also use spells to urge the balloon to move. Cultivators, they are all open lives.

Under Satsuki's command, the balloon slowly rose into the air. It was more than 300 kilometers away from the Loose Faction front, and it was very safe - because of the mutation of the fog formation, neither of the two sides could not cross this area.

This super foggy area, which is more than 6,000 kilometers long, has become a temporary 'truce' between the two sides.

With the help of this 'truce', the army of the Loose faction is rapidly correcting and rearranging. Because it temporarily blocked the crazy attack of the Xuanzhen Sect coalition army, especially the Qixia Country Legion, it allowed the Loose Sect to breathe.

The more time passes, the more unfavorable it will be for the Xuanzhen Sect. The 'advantage of pressing stance' that was achieved by the previous frenzied attack will gradually be lost.

That's tens of millions of artillery shells in exchange! The military expenditure on these shells alone is as high as more than 30 million high-grade spirit stones!

Therefore, the Xuanzhen Sect urgently needs to solve this defense line with a length of more than 6,000 kilometers.

The hydrogen balloon rose slowly, not very fast, but it was very firm and steady, all the way through the floating clouds, and gradually came to the top of the aura layer at a high altitude where the aura was thin.

Here, gravity began to increase, the aura began to subside, and the incarnation period also felt a certain depression here.

Xiao Yue's face was already a little pale, but this was just a conditioned reflex - the little girl was a little scared, but a little indescribably excited.

There is a foundation to build a foundation, and this height and the environment here will not cause much pressure on her. At most, it only increases the gravity by ten times, and for the foundation building period, it can survive normally. Even if the high air is warm and cold, and the air is relatively thin, it is not a problem for the foundation building period.

The balloon continued to rise, gradually exceeding the height of the fog. Here, it has reached an altitude of seventy kilometers. Satsuki looked at the altimeter, and it showed an altitude of 71,160 meters.

Looking down on the earth from here, it was like a picture scroll, and no mountain peak could break through the height of the aura layer—it would be crushed by its own gravity.

However, the fly in the ointment is that a 'cloud and mist embankment' appeared in the east, blocking this magnificent picture of mountains and rivers.

Above this cloud and mist, it rolled like a sea of mist, and the higher places had lost the support of the aura, causing the influence of the formation to disappear and the climate to return to normal.

Satsuki observed for a long time, made sure that it was safe, and took the lead and flew forward.

Here, the spell has lost its effect because there is no aura to support it - the practitioner can certainly rely on the True Yuan method in the body, but the consumption is too great.

So at this time, the power of the machine begins to magical.

The fan powered by the spirit stone whirled and rotated, pushing the hot air balloon forward. Satsuki carefully followed the wind current, trying to reduce resistance and increase speed.

Coming to the upper hand of the 'Sea of Fog', Satsuki tested the wind direction, wind speed, etc., smiled with satisfaction, and immediately used the command flag to command everyone to be busy.

We sprinkle bags of mixed powder on the fan, which crushes the powder, lifts it, and then enters the wind and into the atmosphere.

Suddenly, the gray 'air currents' in the sky began to swirl, gradually spreading in the direction of the heavenly wind, and the powder itself was slightly heavy, and it would gradually fall.

Twenty worlds marched side by side, and from the large amount of powder that was sprinkled, a long river of gray and white appeared in the sky.

There is a large gravity above the aura layer, and the powder falls quickly, and soon the powder comes into contact with the mist. Suddenly, a large amount of fog quickly thinned and gathered together, and tiny ice crystals appeared in the sky. There are even snowflakes and so on.

There is no aura in the sky, but the primordial spirit of the god transformation master is not affected. Ming Xuozi and Hongyunzi looked at this new change in amazement.

The balloon moved forward slowly, but the fog behind it changed rapidly, and after half an hour of the balloon flying out in front, the fog behind it had turned into dark clouds, and even lightning rolled.

As soon as Xiao Yue saw that lightning appeared, her complexion suddenly changed, and she immediately waved the order flag, everyone immediately stopped working, and the balloon began to quickly leave the range of clouds and lightning.

However, the speed of the balloon is too slow.

Ming Xuozi next to him was dumbfounded, and he was shouting excitedly at this time: "Why do you want to leave, come again, come again!"

But the fog behind me had begun to 'collapse'—the fog, which had been white before, like a sea of fog, began to coalesce into dark clouds and began to droop. There seems to be a black hole in the center of the entire sea of fog. And this vulnerability is expanding rapidly.

Not only that, but in the center of the hole, lightning has already begun to appear. At this time, snowflakes, ice crystals, raindrops, and so on can already be seen.

Such a scene is a bit beyond the insight of the masters of the Transformation Period. It's just a handful of powder sprinkled down, and it will produce such a change!

Thinking about the fact that the Xiaoyao faction spent an unknown amount of money to build a defense line of 6,000 kilometers and 12,000 miles, it was actually cracked by a few handfuls of dirt powder like this, and the head of the Mingxu Dao himself was heartbroken for the Xiaoyao faction!

You must know that the entire front is only about 10,000 kilometers, and the freestyle faction has frantically created a 6,000-kilometer truce, all of which are made with formations and so on. Its consumption is absolutely astronomical. Although the technology of Xuantie has advanced now, it is a spiritual material after all, and no matter how cheap it is, it will not be the price of cabbage.

Moreover, to refine the formation base, it must also be assisted by red copper, pure gold, etc.

Seeing such a spectacular scene, Ming Xuzi wanted to continue, he didn't understand why Xiao Yue was so timid, so he thundered, so he was so frightened that he ran away?

But Satsuki didn't care to explain, she waved the command flag in her hand quickly, and all the balloons fled here at maximum speed. And in the process of escaping, there is no powder.

The hydrogen balloon began to deflate, and the balloon quickly fell to the aura layer, and everyone's spells could exert a three-percent effect, so they hurriedly urged the balloon to run wildly.

Behind, the sea of fog was being swallowed up by darkness, dark clouds were spreading rapidly, and lightning was spreading like branches.

Suddenly, a flash of lightning flashed and quickly hit a hydrogen balloon!