Du He hurriedly exited the system and couldn't wait to open the box.

A solar-powered electric fan appeared right in front of him.

This is a half-person high fan, under which is the base of the battery, about a foot high, the fan is not special, the key is a solar charging panel that is more than one person high, but it is very scary.

Du He took a closer look and immediately scolded: "Nima, dog system." ”

It turned out that the solar charging panel was fixed to the base.

Du He scolded: "Could it be that Young Master Ben wants to go to the sun to fan the fan?" No, this is too two-stroke, and you have to find a way to transform it. ”

With that, Du He took out the hammer from his toolbox, and after a bang, he finally separated the solar charging panel from the fan.

Subsequently, Du He hurriedly ran to the R&D center and asked Lao Yuan to find a few skilled craftsmen and start making copper wires.

It took a full afternoon, Du He guarded a few craftsmen, and finally created two copper wires about two zhang long, which were brought back to his room with joy.

Back in the room, he called Lu Bu, first got the solar charging panel to the roof, and then connected the copper wire under the solar charging panel, led it back to the room around the pillar, and connected it to the electric fan.

Kata.

Unscrew the switch, and the fan flutters and spins.

Duhola pulled over a revolving wooden chair, half-lay up, and said contentedly: "Such a small day, I won't change it for an emperor, hahaha......"

Before the words fell, a voice sounded outside: "Du He, do you want to rebel?" ”

Du He didn't have to guess to know that it was Li Liqian.

He turned his head to take a look, only to see Li Yuanshu and Li Lizhi walking in together.

Li Lizhi was like a little milk dog, with her mouth open, sticking out her little tongue to dissipate heat.

As soon as Li Yuanshu walked in, she said curiously, "Why is it so cool in this room." ”

The little beauty Li Lizhi also showed a puzzled look, then looked at the fan behind Du He with wide eyes, and asked in surprise, "What is this?" Can it be windy? ”

The two beauties, big and small, immediately made a startled sound around the electric fan.

……

Mo Yifei opened his eyes and found himself lying on the bed, not concerned about his condition at the first time, but hurriedly looking for the three-blade fan drawings that Du He gave him.

Then she found the drawings next to her.

Ignoring the dizziness coming from his head, Mo Yifei actually picked up the drawings and ran to the laboratory.

After staying in the laboratory until the second watch, Mo Yifei dragged his tired body back to the room, but with a proud and proud smile on his face.

As soon as it was dawn the next day, Mo Yifei took the craftsmen to the production workshop of the furniture factory, worked all morning, and finally installed a huge three-bladed fan.

In fact, it is not difficult to manufacture a fan, but the difficulty is to drive the fan with water power.

The workers who were still on the assembly line of the furniture factory suddenly felt a wind blowing, blowing away the stuffiness and irritability.

Mo Yifei said happily: "It's successful, here, here, and here, all have to install fans." ”

When Du He came to the scene, Mo Yifei had already instructed the craftsmen to install two fans, and then looked at the workers, instead of suffering from heat stroke, they were full of enthusiasm one by one, and discussed the hydraulic fans from time to time. ”

Du He said with a smile: "I didn't expect that this chick is so capable, it is worth cultivating." ”

If it weren't for Mo Yifei's unknown origin, he would have planned to keep this female scientist. Although the R&D center is supported by Lao Yuan, but Lao Yuan is a Taoist priest after all, many times, he is still using the metaphysical set to do things, which makes Du He speechless for a while, such as the grenade secretly made by the R&D center, Lao Yuan insisted that the phenomenon of dumb fire will not occur after drawing a talisman on it, and the triangular military thorn must be soaked in children's urine before it is durable, which makes Du He cry and laugh.

With Murphy's help, Duhe saved a lot of things.

So he was not idle.

At noon, he took seven or eight craftsmen to the courtyard of the R&D center, and asked people to drain all the water in the central pool of the courtyard, and then bring the water from the Bahe River to fill it all.

Later, Duhe found a huge bath bucket.

He cut down a lot of bamboo, cut it into sections and cleaned them, filled them with water, and inserted a small piece of stick.

Finally, more than 100 pieces of bamboo were put into the bath bucket and wrapped in a black cloth. Two large stones are tied to the bottom of the bath bucket and sunk into the pool.

Yuan Tiangang, Mo Yifei, Li Yuanshu and others were all stunned by Du He's actions.

Some people even thought that Duhe was going to take a bath here.

After the preparations were completed, I only heard Du He say: "Come on, pour all the saltpeter into it." ”

The craftsman next to him hurriedly poured all the saltpeter prepared in advance into the pool.

I only heard the sound of fluttering and fluttering.

Pieces of saltpeter, melted in water.

Suddenly, everyone around felt a chill coming.

After more than an hour, people saw that all the saltpeter had melted away, and the surface of the pool had turned into a thin layer of ice.

I saw Du He wave his hand: "Get the barrel out." ”

Four craftsmen immediately jumped into the pool and, enduring the icy, biting heat, carried the barrel out.

Du He personally uncovered the black cloth, then took out a piece of bamboo, and used a dagger to cut the bamboo, and suddenly, a popsicle was presented in front of everyone.

Du He picked it up and looked at it, leaned into his mouth and took a bite, and immediately said with satisfaction: "Okay, the summer artifact, hahaha......"

Saltpeter dissolves in water and absorbs a lot of heat.

Duhe uses this principle to make popsicles.

Although the conditions were rudimentary, Duhe succeeded in the first attempt.

The people around were all dumbfounded.

Originally, this ice only appeared in winter, but I didn't expect that in this extremely hot summer, it was actually made by Duhe?

People don't even believe their eyes, and think that they are looking wrong.

Seeing this, Li Lizhi licked her lips, ran up, snatched the popsicle from Du He's hand, put it in her mouth, and said inarticulately: "Wow, it's amazing......"

The huge popsicle was in stark contrast to Li Li's small peach mouth.

Du He had only one thought in his heart: big popsicles, little beauties.

Before he could react, he saw Xu Zhengdao and others rushing up, and according to Du He's appearance, each of them picked up a popsicle and began to eat happily.

Being able to eat popsicles that are only available in winter in this hot summer is a wonderful life experience for many people.

Fortunately, the popsicles made by Du He at that time were relatively crude, each popsicle was huge, and ordinary people could support their stomachs after eating one, of course, Lu Bu needed more than five to meet them.

8)