For a whole day, nearly two hundred bamboo tubes were used, and the water collected in the end was less than five liters, and it was also mixed with about one-tenth of the black mud.

——This amount is simply not enough to provide for 30 people’s daily consumption, right?

Even though grandma said that if you save little by little, you can add up to a lot, this figure still forced Jin Mang to use his brain.

She remembered that one of the early education products a friend bought for her son included a material package for making a water purification filter. She posted it in her circle of friends. She vaguely remembered that the one she used seemed to be black gold sand... What else was there?

Forget it, it's something she can't get at the moment anyway.

Jin Mang thought for a while and finally remembered that activated carbon has an adsorption effect and can purify water and air.

As for how to make activated carbon, she thought about it for a moment and finally figured it out. She took out two large clam shells from the grain truck, Jin Mang put some small pieces of wood into one clam shell, covered it with another clam shell, and then placed

Get heated in the fire.

After that, take out the charcoal from the clam shell, let it cool, wash it, mash it, and dry it in the sun.

In this way, the activated carbon is completed.

——The whole process took Jin Mang half a day to complete, which was also due to the hot climate today.

Jin Mang was a little excited and tied the gauze cloth as gauze to the mouth of the bamboo tube that was empty at both ends. To avoid insufficient load-bearing, she wrapped it in a few more layers, and then carefully poured the activated charcoal into it.

She first put the water filtered out of swamp mud into a simple filter she made. After waiting patiently for more than ten minutes, a shallow layer of clear water emerged from the water droplets falling from the bottom of the filter.

Jin Mang took a look and saw that the water was clear. When he smelled it again, the previous stench was gone.

She couldn't help but look happy.

The other members of the Youying tribe were shocked when they figured out what she had done.

If given a choice, who would like to drink smelly water?

Lan Ya held the filter made by Jin Mang with a look of joy on his face, and couldn't help but sigh: "It would be great if this could filter the water out of the swamp mud."

"Who says it can't be done?" Jin Mang couldn't help but said, "Isn't this a very simple thing?"

Saying this, she took out a piece of gauze cloth that she usually used to wipe sweat, grabbed a handful of wet swamp mud and put it in it, then wrapped it with a special technique, and then twisted it up hard.

After a while, the water in the swamp mud was squeezed out by the golden light. Although it was not very clean, not much cleaner than the original filtered water, the efficiency was more than ten times higher.

——This method actually completely copied the method Jin Mang used to kill vegetables when making dumpling fillings in his previous life.

Everyone was shocked again. Qingyan was the first to react. She took out a piece of gauze cloth from somewhere and imitated Jin Mang and started squeezing out water.

However, even though it seemed to be a very simple thing, Qingyan did it, but the amount of water she squeezed out was obviously not as much as Jin Mang's, and the swamp mud leaked out at the back.

She was a little confused, but Jin Mang was not surprised.

This skill looks simple, but she learned it from a pastry master who has been passed down from generation to generation in her family. This method of killing water for vegetables is the essence of her family's improvement from generation to generation.

At that time, the teacher had a bad temper and insisted that they could not learn it. Jin Mang started to fight with him and it took him two years to master this technique.

Originally, every time it got dark, their tribe would start to rest, with only a few people responsible for keeping watch sitting by the fire.

However, on this day, the whole family gathered together and followed Jin Mang to learn how to kill water.

Jin Mang was the most efficient, squeezing out about a basin of dirty water in less than an hour. Qing Feng didn't have the patience to learn the water-killing technique, so he was responsible for filtering the dirty water nearby. Qingsui also learned the water-killing technique from Jin Mang.

The technique is not very efficient at the moment, so I will give Qing Feng a helping hand from time to time.

Finally, before falling asleep, the family of three had filtered two bamboo tubes of clean water, and there were still a dozen filters left to filter. It is estimated that they will be able to harvest five or six more bamboo tubes of clean water tomorrow morning.

——This is because there is not enough activated carbon.

Others' harvests were not as great as theirs, but they still had enough clean water for one bamboo tube per family.

Early the next morning, they started on their way again, but Ru Jinmang and others on the grain truck did not stop filtering the water.

Activated carbon is used frequently and needs to be replaced if it absorbs too much soil. Therefore, after accumulating enough experience, they focus on burning charcoal and killing water every time they set up camp. The night watchman is responsible for filtering the clean water, and the food truck is on the way.

The people on it will also continue to filter the water.

In the end, there were not enough bamboo tubes, so they cut a lot of bamboo along the way for spare use.

In order to filter out more water, they slowed down their pace. They didn't really leave the swamp area until they found that the swamp was completely dry.

Even so, most of the area in the grain truck was occupied by bamboo tubes filled with water.

In contrast, they have almost run out of food, and they can only rely on hunting if they want to eat again.

Then Jin Mang discovered something strange. After leaving the swamp, the food intake of many adults, including Qing Feng and Qing Sui, began to decrease significantly.

After careful observation, she found that the two of them filled her stomach very full every time, and they would only eat if there was any leftover.

——Because of today’s weather, meat that has not been cured and processed will definitely not last, and it will become smelly in less than half a day. Jin Mang has also thought about making dried meat, but... there is not enough to eat, where can the meat come from?

Make jerky for her.

Jin Mang thought they were hungry and saved the food for her, and lost his temper.

——It is foolish to let one child be fed while two adults starve. How can one survive if they starve to death?

However, not only were those two people not ashamed, they actually looked confused?

"Mang Mang is a good child." Grandma smiled and took her to her side, explaining to her: "Your parents are gradually fasting."

fasting?

Jin Mang frowned, "Is it the same as those hibernating animals?" But Qingfeng Qingsui does not hibernate.

"It can't be said to be exactly the same." Grandma said: "In order to support the elderly and raise their children, adults like your parents will fast like this to save food. Although there will definitely be enough prey in the second half of the migration, this will

The food we hunt is definitely not enough for everyone. You are a cub, and if you don’t eat enough, your bones will be affected. For an old person like me, your body has begun to decline. If you don’t eat enough, you won’t be able to eat well.

I'm going to get sick or even die."

She touched Jin Mang's head and said softly: "Your parents have accumulated enough energy in their bodies before this. If you fast for a period of time, your body will lose weight, but there will be no other effects."

"even……"


Chapter completed!