On the farm, the students looked at the big bags brought by Wang Bo and the class leader, and their hearts were infinitely melancholy.

And he is deeply aware of his own shortcomings.

They finally understood that there are always things in this world that they don't understand.

Just like the one in front of you.

At first glance, the whole knows...

But on closer inspection, they had no idea what these things were!

For example, the one Li Cheng is holding in his hand now...

It looks like a large drill bit with a handle on it.

At the bottom end is a spiral-shaped fan blade that spirals upwards around the drill bit.

The overall length is about one meter smaller.

Two wires were also thrown out of the side.

Li Cheng looked at it for a long time, but he didn't understand what it was.

In the end, Wang Bo weakly explained: "This thing is used to drill wells..."

As soon as these words came out, the eyes of all the students glanced over.

They didn't quite understand how the other party bought such a tool when they asked Wang Bo to buy something related to water.

"No, Bo'er, can you explain what you think?" Li Cheng looked entangled and checked the drill bit in his hand.

Wang Bo scratched his neck: "Didn't Teacher Ren say that we can't be content with pleasure and need to do it ourselves, and then I thought, can we drill a well by ourselves, so that it will be inexhaustible?" ”

"But the question is, how do you use this kind of thing!"

"Do you think any of us here seem to be able to dig wells?!"

Li Cheng's brows furrowed deeply, I don't know if it's an illusion, he always feels that he can see his own teacher in Wang Bo now.

Is this an attempt to force them to learn?!

Hearing this, Wang Bo smiled easily and took the drill bit from Li Cheng: "This thing is very simple, as long as the power is turned on, find a place, and hit it on the ground, and the water will come out in a while." ”

"And!"

As he spoke, Wang Bo threw down the drill bit and turned out an iron squeezer from the big bag: "I also bought a pressurized pump." ”

"As long as we have a safe place to drill out of the water, we don't have to build a well wall at all, it's not easy and convenient!"

Wang Bo still had a little pride in his speech, and he wanted to praise his wit.

If it weren't for the last thought of the problem after the water came out, they would have to build a fence and hang a bucket for the rest of the day.

"But the question is..., how do we get the electricity!?" Li Qi's brows furrowed deeply.

"Simple~" Wang Bo waved his hand: and then pulled out a big guy from the side. ”

"See, the high-power noise-reducing diesel generator, as long as it is paired with diesel, he can directly send out electricity."

"And the one I bought has a lot of power, about a kilowatt, enough for all of us!"

"And I even bought three barrels of diesel back!"

"The merchant said that with these three barrels of diesel, the generator can work continuously for at least a month!"

As he spoke, Wang Bo brought out the diesel fuel again, looking like he was not lying to everyone.

Everyone ignored Wang Bo this time, but saw other things on the side of the diesel with sharp eyes.

Li Cheng came behind Wang Bo in a leisurely manner, and took out a random one from those things, which was a very thick wire.

The corners of Li Cheng's mouth twitched, and he looked at Wang Bo: "Bo'er, this wire..."

Wang Bo hurriedly coughed dryly: "Ahem, you also know that with a generator, we must have some power transmission lines... So...."

"But don't worry! This time, I also specially asked for a circuit diagram with the merchant, and we have to follow the circuit diagram, so that we will be able to lay these wires! ”

“.......”

In an instant, the audience fell silent.

Looking at the book in Wang Bo's hand, they always felt that there was a breath running in their hearts.

This kind of operation has only been seen in their own teachers before.

But now, how did this thick-eyed and big-eyed Wang Bo learn this set? !

At this moment, the students of Class 9 wanted to give Wang Bo a physical correction, so that this guy would not go further and further on this road.

Feel the 'murderous aura' of your companions.

Xiao Yang's squad leader silently took a step back: "That, I persuaded Wang Bo..."

"Let him buy something light, even if it's not of good quality."

"But this guy just doesn't listen, he always thinks it's a little fun, and I can't help it..."

Wang Bo reluctantly turned around when he heard this, and stared at the squad leader viciously: "Damn!" It was those simple things that someone said at that time that might go against Teacher Ren..."

However, before he finished speaking, the students of Class 9 immediately surrounded Wang Bo.

The sound of joy was heard again from the farm.

looked at Ren Yan on the side and bared his teeth.

These boys, it's a lot of hard work...

......

After a fight, the students of Class 9 gathered around the diesel generator again.

If, this is now their only hope of getting electricity.

They still don't know how to use it, but they still have to learn it...

After glaring at Wang Bo in unison, the students of Class 9 plunged into the ocean of circuits without hesitation.

This time, Wang Bo brought more than just generators and wires.

And some sockets, light bulbs, and most importantly, a refrigerator...

So the students in Class 9 felt they needed to put wires all over the farm.

Otherwise, these things will be wasteful.

After intensive study and brainstorming, the students finally had a rough understanding of some circuit knowledge.

The instructions in that textbook are also unusually simple and straightforward, and each step is described in detail about the exception.

After some discussion, the students chose the parallel method without hesitation.

And began to try to get the wires upside down.

The opening is the place of the opening, and the link is the place of the link.

Although it was the first time I had done these things, the good news was that it was not very difficult to just change the direction of the wire and the direction of the connection.

After a few hours of hard work, all the important areas were finally laid out with the most basic wiring, and in some places even the light bulbs were hung high.

They also made several wooden shelves for this purpose.

With these hands-on experiences, the students found that they had no difficulty making these wooden shelves at all.

As night approached, the students connected the last main line to the generator, which was then poured with diesel.

After starting the generator, the entire farm was lit up by electric lights for the first time in the night.

A sense of peace of mind instantly surged into everyone's hearts.

It's electric!

Taking this opportunity, Li Cheng also ran to the kitchen and used the newly bought pots and pans and some rice, noodles and vegetables to cook a big meal for everyone in Class 9.

This meal, the students had a good meal.

Ren Yan is no exception, and he also feels the growth of Li Cheng in his heart.

Although it is not up to the professional level for the time being, it already has some signs.

After eating and charging the power bank and mobile phone, Wang Bo suddenly dragged a dejected face and came to Ren Yan's side.

"Teacher Ren, do you know why girls are angry?"