After relying on the motherland, my supermarket has become more and more prosperous.

Chapter 302 Filter Membranes and Waste Decomposition Fluids

Ye Yuanqing first took out a piece of something the size of a table, which looked like thin cloth and paper, and was azure and translucent, and explained it in detail.

"This is for filtering water. The usage process is relatively primitive. You need to wrap it around the water outlet and let the water that needs to be filtered pass through it."

"If the water source contains too many impurities or is too toxin-rich, it may need to be filtered a second or even a third time. Ms. Jiang, please don't think it's too much trouble! This is already a relatively advanced technology in a Level 3 technological civilization."

The filtering products of the third-level technological civilization, I don’t know what the specific effects are?

"Can this thing filter out the Zerg toxins?" Jiang Wanwan asked curiously.

Zerg toxins should be more difficult to deal with than industrial wastewater on Earth, right?

If we can filter out the Zerg toxins, we will be invincible once we bring them back to Earth.

"Repeating the filtration three or five times should eliminate 80% to 90% of the Zerg toxins, but to completely filter it out, it might take ten or so times!"

Ye Yuanqing explained embarrassedly, and then added.

"Actually, if you don't have any restrictions on the level of technology, we can find you the most advanced filter. It can be activated with just one click, and it can filter any water source cleanly."

"No need, this is fine, I'm very satisfied!" Jiang Wanwan said with a smile and waved her hand.

No matter how good something is, it must be able to be transmitted back to Earth. This one is just right!

"Okay, then I'll give it to you!" After confirming that Jiang Wanwan was really satisfied, Ye Yuanqing stopped hesitating and handed the thing over.

Jiang Wanwan was completely bewildered by the other party's action. She subconsciously asked, "Why are you giving it to me? Just put it directly into the star coin exchanger!"

The two looked at each other for a long while before they finally understood the misunderstanding.

Jiang Wanwan burst out laughing and said, "I want this kind of technology. I'm already very grateful for your help in finding it. How can I ask for it for free? You should just exchange it for star coins according to the normal procedure!"

"This..." Ye Yuanqing also reacted and subconsciously looked at Ye Yuanbai.

Finally, with Ye Yuanbai's nod, the things were sent into the grid of the star coin exchanger.

[A filtering membrane has been detected, containing six third-level technological civilization technologies and eight second-level technological civilization technologies. This appears for the first time and can be exchanged for 6800 star coins.]

This... so many star coins?

Looking at the display on the screen, Ye Yuanqing's face was full of surprise, and he couldn't help but look at Ye Yuanbai.

They originally thought that these things were given away for free, and even when they were told to pay according to the original process, they didn't take it seriously.

After all, it is originally low-tech and has no use at all. Even if it is dropped on the ground, no one will pick it up. At most, it will cost some energy to find it. How many star coins can it be exchanged for?

But I didn’t expect that such an inconspicuous and obsolete filter membrane could be exchanged for so many star coins?

Isn't this equivalent to six or seven level three energy stones, which can be exchanged for sixty or seventy flowers?

At this moment, their original concept finally changed little by little, and they recalled what Jiang Wanwan had said before, that a third-level civilization technology could be exchanged for 1000 star coins.

Originally, they were planning to use energy stones as the main item for exchanging star coins. As for looking for these low-tech products, it was just to thank Jiang Wanwan.

But at this moment they discovered that spending some effort to find low-tech products is the right way to open this store?

If Jiang Wanwan knew what they were thinking at the moment, she would probably be very happy.

However, she was also shocked by the content on the screen at the moment and her mind was focused on other things.

This filter membrane contained six third-level civilization technologies, which really surprised Jiang Wanwan. However, what was even more surprising was the eight second-level civilization technologies displayed on it!

From the above prices, it can be inferred that a second-level civilization technology can be exchanged for 100 star coins.

Second-level civilization technology is the technology that the Earth can master, while the technology that can be purchased by the system with money is the technology that has never been mastered on Earth.

In other words, these eight secondary civilization technologies in the filter membrane have never been researched on Earth and are infinitely close to Earth's technology.

This is not like the third-level civilization technology, which is separated by countless unknown theories.

If we bring it back to Earth, it would be like finding the answer to a question. The research results should come out quickly, right?

By then, there will be no need to worry about the neighboring country's stupid act of dumping nuclear waste water into the sea.

The exchange of a filter membrane surprised both parties. After a long silence, everyone came to their senses and continued with their actions.

However, with the example of the filter membrane before, Ye Yuanqing couldn't help but look expectant when he introduced the second item.

He took out a palm-sized transparent test tube bottle filled with a sticky black liquid.

"If you add three to five drops of this decomposition liquid to a ton of garbage and wait for about fifty days, it will completely decompose the garbage and turn it into nutrients for the soil."

"It is said that this decomposition fluid was developed after we first migrated to our current planet and discovered that the land was unsuitable for growing plants. We spent a lot of resources researching it."

"Unfortunately, after research, we discovered that the land's inability to grow plants wasn't due to a lack of nutrients, but rather to the presence of insect toxins in the soil. Therefore, it was ultimately eliminated."

Ye Yuanqing sighed regretfully, then looked at Ye Yuanbai beside him and explained.

"This small bottle was specially made by the boss to maintain the small pot of soil he grows flowers in. It happens to use Level 3 civilization technology. It should meet Ms. Jiang's requirements, right?"

Not only can it decompose garbage? It can also turn the decomposed garbage into nutrients that are useful to the soil?

Jiang Wanwan immediately became interested and asked, looking at the bottle of inconspicuous black liquid.

"Can this thing decompose any garbage?"

"Most of the garbage within the third level of civilization is fine. Some of the more seriously polluted garbage may take longer to be sorted out, but the white garbage that Ms. Jiang mentioned before is definitely fine." Ye Yuanbai explained with some embarrassment.

In other words, the garbage produced by the second-level civilization can definitely be completely decomposed?

Jiang Wanwan nodded, very satisfied with the result, then looked at Ye Yuanbai and asked.

“Can the nutrients converted from decomposed matter really enhance the soil?”

Hearing this, Ye Yuanbai nodded and explained in a low voice.

"Yes! My small pot of soil can continuously provide nutrients and grow flowers without interruption, relying on those decomposed substances."

Yes, Jiang Wanwan just remembered it.

Ye Yuanbai only had a small flowerpot with a pitiful amount of soil in his hand, but this was the reason why he had been able to survive until now!

Seeing that Jiang Wanwan understood and stopped asking questions, Ye Yuanqing slowly put the bottle into the star coin exchanger.