The list Qin Lan brought contained a lot of supplies, but these supplies required Chen Xin to exchange them for vegetables produced in his shelter. The list also listed the exchange ratio that the SWAT team deemed appropriate after discussion.
Of course Chen Xin has no objection to the exchange of materials, which is also very beneficial to him, but he has different opinions on the proportion of material exchange.
"One hundred kilograms of fresh vegetables in exchange for five bags of cement? This ratio is acceptable." Chen Xin looked at the exchange ratios marked on the list and checked them one by one: "But the steel bars are a bit exaggerated, right? Twenty kilograms of vegetables can actually Replace a steel bar?”
Steel bars are extremely useful to Chen Xin. Among other things, reinforced concrete must be used to strengthen the door of the shelter.
"We provide standard φ12X12 steel bars, and as you know, Asin, there is no steel factory in this city. All of these rely on railway input, so it is understandable that the price is higher." Qin Lan explained to Chen Xin.
Although the two were once boyfriend and girlfriend, they obviously didn't care about their past relationships when they were bargaining, and they were both comparing every penny.
"But twenty kilograms of vegetables can be exchanged for one steel bar. This price is still outrageous. I think ten kilograms is an acceptable price." Chen Xin cut the exchange ratio in half when he opened his mouth, but looked at Qin Lan, Wait for her to counteroffer.
As expected, Qin Lan shook her head and refused directly: "Ten pounds is too little, at most eighteen pounds."
However, Chen Xin refused to give in and kept repeating: "Ten pounds, or I will find someone else to change it."
"This is impossible, even if you put it before the disaster, you wouldn't be able to exchange ten pounds of cabbage for one steel bar." Qin Lan shook her head vigorously, but still made a compromise: "Fifteen pounds, no more. "
Hearing what Qin Lan said, Chen Xin laughed and said to her: "One step back, twelve pounds. Get me fifty steel bars first. It's urgently needed."
"In urgent need? What are you going to do, A Xin? Do you need so much steel bars?" Qin Lan suddenly became curious when she heard that Chen Xin said it was in urgent need.
Chen Xin said directly: "It has been three months since the end of the world, and the temperature is almost close to freezing. Before it freezes, I plan to strengthen the door of the shelter. So in addition to steel bars, we also need cement, sand and steel plates. , I can accept the exchange ratio of these building materials, please ship them together as soon as possible. "
Hearing that Chen Xin said it was going to be used to strengthen the door of the shelter, Qin Lan nodded clearly and agreed happily.
Official shelters are now undergoing large-scale expansion work. All shelters have been allocated a large amount of building materials. The amount of materials Chen Xin wants is not large. The SWAT team only needs to use some of their own materials. able to meet his needs.
After discussing the demand for building materials, Chen Xin made another demand that was not on the list: "Alan, can you get me some glass? It would be best to have a large cylindrical glass tube. If It would be better to have an aquarium with this shape and a vacuum pump.”
"You can get it, but A Xin, why do you want these things?" Qin Lan asked a little strangely.
Chen Xin smiled and explained: "The aquarium can be transformed into the recommended algae oxygen generator. Living in an underground shelter will definitely have oxygen problems. I need one myself, and the dragon lady also needs one. I can help her make one." You can exchange for all the good wine she has. Drinking can keep you warm when the weather gets cold."
"You're not a fool, why are you drinking to keep warm?" Although Qin Lan complained like this, she still agreed to Chen Xin's request and wrote down what Chen Xin wanted in a small notebook.
The two checked again the exchange ratio of various materials on the list, as well as the several materials outside the order that Chen Xin added, and then ended the bargaining between them.
After the bargaining was over, the conversation between the three became much more relaxed, and Chen Xin also asked about some topics that interested him.
"Speaking of which, what is the main food in the shelter now? Isn't it really rat, earthworm, and mushroom soup?" Chen Xin made a joke.
But rats, earthworms and mushrooms are indeed animals and plants suitable for raising in low temperature and underground lightless environments, and they were also the main food sources in the shelters announced by the state before the disaster.
Regarding this question, Ding Ning just shrugged his shoulders and leaned on the sofa in Chen Xin's living room: "I just returned to the shelter recently. I don't know very well, but the food I ate was basically rat meat stewed with potatoes and mushrooms, but rice was also It’s strange to be able to manage a full meal.”
"The country mobilized a lot of rice before the disaster. It's not surprising that we have rice to eat now." Qin Lan knew more about the situation than Ding Ning, so she explained to Chen Xin: "As for mushrooms and potatoes, mushrooms are currently the most popular food for everyone who evacuates." Of all the things we are growing, the mushroom kits provided by the state have a good yield and can now be harvested once a month. If the planting area were not insufficient, mushrooms alone could actually meet our food needs.”
At this point, Qin Lan paused before continuing: "As for potatoes, the country has not promoted their cultivation on a large scale. Although they are high-yielding, they also require high soil and fertilizer, and are not as stable as mushrooms.
Moreover, it consumes water and electricity, and ordinary shelters do not have the conditions for large-scale planting. Therefore, the city opened a special underground planting area near the power plant to grow potatoes, and the yield is not too high. "
When Chen Xin heard what Qin Lan said, he nodded in understanding.
In fact, when he first built the shelter, his first thought was to grow potatoes.
Thanks to the movie "The Martian", everyone knows that growing potatoes can survive, so they feel that the end of the world is coming. Shouldn't they grow 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 when traveling through ancient times.
Everyone seems to think that this is a magical thing. The yield of several kilograms of crops per mu is undoubtedly a dimensionality-reducing blow to traditional agriculture, where the yield per mu may be less than one-tenth of potatoes.
Potatoes do have many advantages. First of all, the yield is naturally high. A yield of several kilograms per mu seems to be a very common yield for potatoes.
Secondly, potatoes are very suitable for growing in alpine areas. Mongolia in the Yan Kingdom and Siberia in Lucia are the main producing areas for growing potatoes. They can still grow healthily in environments with temperatures below 10 degrees and do not require too much water. Irrigation can ensure higher yields.
Moreover, potatoes are also nutritious and rich in starch. They can provide a large amount of calories and nutrients to the human body in cold environments. They are indeed an important food to sustain life.
But potatoes are not perfect. (End of chapter)