Forget it, young, I don’t have time today. Looking back and looking for an opportunity to accept the beatings of society, remember it first today.

After class in the morning, Li Dong and his group gathered at the entrance of the library. The junior brother who was responsible for taking the seat made a move away, and the crowd sat down and spread out the design drawings.

“A total of five design drawings.”

One of the standard design drawings copied by Li Dong, and the other two design drawings were produced by the Department of Physics and Chemistry.

"Let's discuss it first."

Originally, Wang Lei was full of confidence, but he was surprised to find that Li Dong’s design was the most reasonable. How could this be possible? Li Dong, a biological department, shouldn’t he study the promising job of planting rice grass?

This guy actually knows design, Hu Lixin glanced at it. "This is not a cousin's design drawing. After discussing it, it's better for cousin. Cousin, I'd decided yesterday if I knew it."

"That's not what you said, the more you say the truth, the more you become clearer."

"That's true, if you don't discuss it, you won't think this design is good."

Although Li Dong felt that what Hu Lixin said made sense and wanted to give her a big thumbs up, he still held down his thumbs up. "It's hard to say that, alas, maybe I'm born with a talent for design."

When Li Dong didn't sigh when he thought of his potential as a master of underwear design, he was born with no choice. Although I'm sorry, there was no one who could do it at that time.

"Then vote."

In the end, Li Dong's plan was selected and decided. Dai Yingcong was surprised and thought that the physics department could get the plan. "It's decided, everyone will prepare. I'll contact the machinery factory to customize copper pipes, glass, groove frames, and color steel plates."

"The Department of Physics is responsible for electroplating heat absorption materials, insulation materials, and temperature control materials."

"The Department of Chemistry is responsible for the media and sealing materials."

After the overall arrangement, everyone started to take action. Nanda has its own cooperative machinery factory. Although it is not considered a school-run factory, it is also in-depth cooperation.

"Twenty sets first."

"I almost forgot, let's get together again in the afternoon to calculate the cost."

Everyone nodded and took advantage of the noon to calculate the cost. Li Dong was not idle and took Hu Lixin back to the courtyard. He borrowed Feng Duan's phone number to call several factories, and then placed an order and asked about the cost.

The answer given here is to discuss it, and I will reply to him tomorrow at the latest.

"It's done?"

"The plan has been determined. If we calculate the cost in the afternoon, we will prepare for production."

Feng Duan nodded. Li Dong was not blind, and he thought about calculating costs at the first time.

"How many?"

Two hundred and fifty yuan, the lowest cost, this is not too expensive, it is much cheaper than vacuum glass tubes. "Let's do this, I'll give it to several professors. I know everyone is embarrassed to set the price too high."

Puchi, the few people who really drank tea all sprayed, and it cost 25 yuan, Li Dong wanted to sell 45 yuan, which is too unintentional.

"What's wrong?"

"Student Li Dong, is this too expensive?" Feng Shaofeng whispered.

"How much do you think is appropriate?"

Li Dongxin said, let me see what the current view of money for college students is. Feng Shaofeng was stared at by Li Dong, and hesitated for a while and gritted his teeth and said.

"I think... why can't it cost more than 280 yuan?" After saying that, Feng Shaofeng's face turned red. There were too many, and there were thirty yuan more. How could he be so shameless about 280 yuan.

"Two hundred and eighty yuan, this is quite appropriate."

Wang Lei nodded, just kidding, Li Dong felt that these people were crazy. Every student is really a student, and he doesn’t know that the firewood and rice are expensive if he doesn’t take the lead. “After 28, we are losing money, no, less than 38. This solar water heater will make a profit.”

"You can't just work hard, and you don't even have enough money for the next restaurant." Li Dong made the decision directly. These college students cherish their faces too much, and have a vague view of money. Forget it, let's do it yourself.

“Three Hundred and Eighty-Eight.”

“Internal Price.”

Li Dong said. "The external price is 688 yuan."

For a moment, the entire bathing team stopped talking, and looked at Li Dong with his eyes kicked at the boss.

Dai Yingcong also stopped writing and looked at Li Dong with an incredible look on his face. It was already a shameful thing to sell for 250 yuan, but now it is actually sold for 688 yuan to the public. This is simply a capitalist face.

"Don't look at me like that."

Li Dong sighed. "I can't help but tell you the truth. I called several factories and found out about it. They can only help us make about twenty units a month at most. If it doesn't affect their factory production, it's just empty talk to the outside price."

Nowadays, factories are all state-owned factories. If it weren't for the golden signboard of Nanjing University, it would be strange if someone took care of Li Dong. The internal price is a little lower, it doesn't matter. It's definitely not that cheap outside. Li Dong's reason is clear.

A few people were silent for a moment. This kind of thing was quite impactful to them. "Let's do it this way, I'll ask someone to help deal with the outside matters. We've done it. Several professors of solar water heaters, and we won't care about other matters. Order a high price and others will ask, so it's easy to shirk it."

Several people nodded, and in the next few days, as the materials were finished, the weekend bathing group gathered again.

“The materials are all.”

In Feng Duan's courtyard, a lot of people had already carried the materials, including the heat collecting plate, copper tube, glass, frame groove, steel plate, insulation foam, water storage bucket, water pump, etc., all of which were prepared.

"Students, eat watermelon."

Chen Lianfang came out with the iced watermelon, and everyone was embarrassed.

"Eat, don't be polite, everyone." Li Dong counted half of the owner. "It just so happens that we will discuss how to do it?"

"We are responsible for the iron rack."

Hou Liang and Jianping are two seniors in the Department of Biology, third-level electric welders. It is simply too easy to weld an iron rack.

“We are responsible for the pipework.”

The Department of Physics is responsible for the installation and wiring of copper pipes. This work is the top priority. The Department of Chemistry mainly installs medium for a while, installs insulation materials, and sealing testing.

“I’m responsible for spraying the paint.”

"Okay, then start."

I have been busy for noon and finally figured out that the heat collection board has been prepared. Everyone is still a little worried now, not knowing whether it will be successful. "Cousin, what should I do?"

"Try the sealing of the copper tube first, and then add the medium."

This is a job in the chemistry department. Several students quickly got some things, and the sealing was fine. "Installation of the water tank and medium." The iron rack was welded and installed the water tank. The heat collecting plate was bulging southward under the water tank.

The copper pipe is wrapped and the water pipe is connected, and some water is pulled. This is not as high-end as automatic water supply, water supply and medium are added.

"What should I do now?"

"Eat watermelon and wait."

This guy, Li Dong, dare not say that he will definitely succeed. Who knows? Fortunately, there is still time. The sun is still quite fierce this day, and it makes Li Dong's scalp oily. "Oh, Dongzi, come in, it's so hot."

"It's okay, second aunt, I'll stare at it."

The temperature control equipment is not advanced, it is considered good if it has it. This is the first experimental type. "The water temperature is 45 degrees good."

"How about it?"

"Forty-five degrees."

Li Dong pointed to the thermometer and said with a smile. "It should be able to reach fifty degrees later, which is quite successful."

"It's really done?"

Generally, you can take a hot bath at more than 30 degrees, and you can definitely take a bath in winter in 50 degrees. "The bathroom needs to be renovated."

It’s not possible to take a bath in winter without a bathroom heater, and it’s a little more difficult to get the fan. Now Li Dong doesn’t have the confidence to do it.

"If you can't, bring a few bathroom heaters here."

This thing is not difficult, Li Dong muttered, Feng Duan came back and saw everyone release hot water, and came to see it. "It's not bad."

The plan will be modified in the next few days, improved the solar water heater, and installed it for several other professors. Li Dong has made a nickname.

"It seems we have forgotten something?"

"What's up?"

Hu Lixin was so comfortable eating iced watermelon.

"Calue money."

I was just taking care of the installation, but I didn't receive a penny. What should I do? I called a bath to send it to the warm water brigade to collect the money. The first second uncle, Feng Duan, prepared the money, two hundred and five, but when Li Dong said 38.

Feng Duan spit out a mouthful of watermelon seeds, stared at Li Dong blankly, and smiled.

“Three hundred and eight is three hundred and eight.”

Chen Lianfang smiled and said, "The children have worked very hard, so they should be more important."

Good guy, there are also problems with cheating academicians. Yes, don’t do it, they all know the cost price. "Where is Li Dong, we will give as much as he accepts his second uncle."

“Three Hundred and Eight.”

Several students were embarrassed to squeeze out a number. When everyone heard that the good boy had made money from his second uncle, he was so unscrupulous. Forget it, forget it, as long as they collect the same amount, they don’t care about this little money. It’s quite comfortable to take a hot bath in winter.

"I'm getting rich." Hu Lixin helped Dai Yingcong point out the great unity he earned and grinned.

After deducting the cost, the whole thing was calculated and earned more than 1,000 yuan in more than a week. Li Dong was very calm and was very happy to have contact with several factories in the machinery factory. Li Dong had already handed over the bamboo weaving equipment design drawings to the machinery factory to customize a batch of equipment.

This order is a big order. The total value of the equipment alone reaches 100,000 yuan. Of course, the deposit in the early stage is not much, only 10,000 yuan.

"This is only a little bit of money."
To be continued...