Doomsday Bunker Upgrade Chapter 79: Bargaining

　　 There are not many materials listed on the list that Qin Lan brought, but these materials need to be exchanged by Chen Xin with the vegetables produced in his refuge. The list also lists the exchanges that the SWAT team deems appropriate after discussion. Proportion.

Of course, Chen Xin has no objection to the material exchange, which is also very beneficial to him, but he has different opinions on the proportion of material exchange.

　　 "One hundred catties of fresh vegetables are exchanged for five bags of cement? This ratio is acceptable." Chen Xin looked at the exchange ratio marked on the list, checking one by one: "But the steel bar is a bit exaggerated, isn't it? Actually twenty Can only a catty of vegetables be replaced by a steel bar?"

Reinforcement is extremely useful to Chen Xin. If nothing else, reinforced concrete must be used to reinforce the gate of the shelter.

　　 "What we provide is standard φ12X12 steel bars, and you know that there are no steel plants in this city. All of these rely on railway input, which is understandably more expensive." Qin Lan explained to Chen Xin.

Although the two used to be boyfriend and girlfriend friends, they obviously did not care about their past feelings when they were bargaining.

　　 "But only 20 catties of vegetables can be exchanged for a steel bar. The price is still outrageous. I think ten catties is an acceptable price." Chen Xin opened his mouth and cut the exchange rate in half, but his eyes were on Went to Qin Lan and waited for her to counter the offer.

As expected, Qin Lan shook his head and directly refused: "Ten catties is too little, at most eighteen catties."

However, Chen Xin refused to give in an inch and kept repeating: "Ten catties, or I will find someone else to change it."

　　 "This is impossible. Even if you put it before the disaster, you can't exchange ten catties of cabbage for a steel bar." Qin Lan shook her head vigorously, but made a compromise: "Fifteen catties, no more Less."

　　When Qin Lan said this, Chen Xin laughed and said to her: "One step back, twelve catties, let me get fifty steel bars first, I need it urgently."

"Urgently needed? Ah Xin, what are you doing? Do you need so many steel bars?" Qin Lan suddenly became curious when he heard that Chen Xin said it was urgently needed.

　　 Chen Xin said directly: "The end of the world has been coming for three months, and the temperature is almost close to freezing. Before freezing, I plan to reinforce the door of the refuge. So in addition to steel, I need cement, I can accept the exchange ratios of sand and steel plates, these building materials, so let’s ship them together as soon as possible."

Hearing that Chen Xin said that it was to reinforce the gate of the shelter, Qin Lan nodded clearly and agreed very happily.

Now the official shelters are also undergoing large-scale expansion work. All shelters have been allocated a large amount of construction materials. The amount of materials that Chen Xin wants is not large. A little out will be able to meet his needs.

After negotiating the demand for building materials, Chen Xin proposed another demand that was not on the list: "Alan, can you get me some glass? It's better to have a big glass like a cylinder. Tube, it would be better to have an aquarium with this shape, and there is also a vacuum pump."

　　 "You can get it, but Axin, what do you want these things?" Qin Lan asked strangely.

Chen Xin smiled and explained: "The aquarium can be transformed into the proposed algae oxygen generator. Living in an underground shelter will definitely have oxygen problems. I need one for myself, and Long Niang also needs it. I help her make it. One can also exchange all the good wines in her place. Drinking in cold weather can keep you warm."

"You're not a Maozi, why are you drinking to keep warm!" Although Qin Lan complained like this, he still agreed to Chen Xin's request and wrote down what Chen Xin wanted in a small notebook.

The two checked the exchange ratio of various materials on the list again, as well as the other materials added by Chen Xin, and then the bargaining between the two ended.

After the bargaining ended, the topic between the three became much easier, and Chen Xin also asked about some topics he was interested in.

"Speaking of which, what is the main food in the shelter now? It's not really mouse, earthworm and mushroom soup, right?" Chen Xin made a joke.

But mice, earthworms and mushrooms are indeed animals and plants suitable for raising in a low temperature and underground dark environment, and they are also the main food sources of the shelter announced by the state before the disaster.

For this question, Ding Ning just shrugged his shoulders and leaned on the sofa in Chen Xin's living room: "I've only recently avoided the difficulty, I don't know very well, but what I eat is basically mouse meat stewed with potatoes and mushrooms. It’s weird that the rice can still be full."

　　"The country mobilized a lot of rice before the disaster. Now it’s not surprising to have rice to eat." Qin Lan knows a little bit better than Ding Ning, so she explained to Chen Xin: "As for mushrooms and potatoes, mushrooms are currently Every shelter is growing things, the mushroom packs provided by the state are good, and now they can be harvested once a month~IndoMTL.com~ If it is not for the lack of planting area, in fact, mushrooms alone can meet the needs of food."

　　Speaking of this, Qin Lan paused for a while before continuing: “As for potatoes, the country does not promote large-scale planting. Although this product is high-yield, the demand for soil and fertilizer is also high. It is not as stable as the production of mushrooms.

Moreover, it consumes water and electricity, and general shelters do not have the conditions for large-scale planting, so the city has opened up a special underground planting area near the power plant to grow potatoes, and the yield is not too high. "

　　 Chen Xin nodded in understanding when Qin Lan said this.

　　 In fact, when he built the shelter, the first thing he thought of was planting potatoes.

Thanks to the "Mars Rescue", everyone knew that growing potatoes could save their lives, so they felt that the end of the world was over. Shouldn't they be growing potatoes at this time?

Especially in various time travel novels, in addition to burning glass to make soap, looking for potatoes has almost become a must-do in time travel.

It seems that everyone thinks that this is a magical thing. The yield of several thousand catties of crops per mu is undoubtedly a dimensionality reduction blow for traditional agriculture, which may not be one-tenth of the yield of potatoes.

Potatoes do have many advantages. First of all, the yield is naturally high. A few thousand catties per mu seems to be a very common yield for potatoes.

　　Secondly, potatoes are very suitable for growing in alpine regions. Mongolia in the Yan country and Siberia in Lucia are the main producing areas for growing potatoes. They can still grow healthily in an environment where the temperature is only 10 degrees. More water irrigation can ensure higher yields.

Moreover, potatoes are also rich in nutrients and starch, which can provide a lot of calories and nutrients for the human body in a cold environment, and are indeed an important food for sustaining life.

　　 But potatoes are not perfect.