The use of herbs dates back tens of thousands of years, and cavemen lived in caves all year round, because the caves were damp, causing frequent joint pain.

It may be that eating and sleeping all day to make a baby is really idle, and a certain caveman will use a fire to ignite wormwood, and then burn the painful joints.

Cavemen discovered that wormwood was miraculous in treating joint pain, and it was the first time humans had used herbs to alleviate pain.

On Earth, almost all plants have some medicinal properties, from the precious reishi Polygonum multiflorum to roadside plantain and dogtail grass.

Medicinal herbs were studied by the ancient Chinese, and the compendium of materia medica is the main record of medicinal herbs.

"Cooking medicine?" Han Xue stroked the green silk in her ear, and stared at Shui Lingling's big eyes curiously, in their clan, there is no such thing as cooking things.

Among the Alpha tribes, there are mainly no suitable utensils to cook, and they constitute the flame of hope for the vast majority of civilizations, and they do not always have them.

Cooking medicine requires pots, fire, water, and herbs, Zhao Yunxiang doesn't have a pot, but he has shells!

There are huge seashells piled up on the beach, which die in the sea for various reasons and are washed up on the beach by the waves.

The shells are hard and ground to become calcium carbonate, also known as lime, and some of the lime we use today is mined.

Like coal, the mined lime was formed by the death of some organisms in the Devonian ocean, such as ammonite and rectangular stone.

Set up a few stoves with stones, put the shells on the fire to warm them up, and then go out into the woods.

The puddle that Simba had painstakingly dug with his paws was filled with muddy water, which looked muddy but devoid of little bacteria.

After all, it is covered in mud and isolated from the air, so it is difficult for bacteria to grow, but it smells of a fishy smell mixed with earth.

Han Xuening has been following closely behind Zhao Yunxiang, in her opinion, the person who can release the heavenly fire with his bare hands must be powerful, as the people of Alpha, he must follow behind the gods.

The mud pit was dug a little shallow, and after mixing the soil, it was full of mud, which was undrinkable, Zhao Yunxiang continued to dig with stubble, and as he dug, the muddy water in the pit gradually diluted.

After digging more than ten centimeters, the water at the bottom of the pit slowly seeps out, and most of these groundwater are formed by rainwater penetrating the ground, and the water can be dug down in low-lying places.

"The water is so muddy. Han Xuening looked at the water in the mud pit, usually the rainwater they drank was connected, otherwise it was stagnant water, which was obviously cleaner than muddy water.

"I've been prepared!" Zhao Yunxiang carried with him a few pieces of charcoal, as well as some fine sand and stones.

The turbid water is undrinkable, and it will take a while for it to clear itself, but he has things to purify the water, stones, fine sand, and charcoal, which are all advantageous tools for purifying the water source, among which charcoal has the strongest adsorption capacity.

As we all know, charcoal can purify the air, purify the water source, and can also deodorize, and it is best to use this to make a water purifier.

Around the woods there are a few tropical plants with oval-shaped leaves, and they are plucked at random to make a funnel with a small exit, after which they begin to be filled with charcoal crumbs, then fine sand, and finally stones.

Sand and charcoal are the main filters in the funnel, because the density is small, which can retain impurities in the water, while the pervasive water passes through the fine sand and charcoal.

Soil is not completely soluble in water, and after purification, the impurities in the sewage will remain in the original water purifier, and the clean water will flow out of the water purifier.

"Sounds so profound...... Han Xuening is a teacher in the tribe, responsible for teaching the civilization passed down from the previous generation, and there are many animals and iron shells that fly into the sea that she inherits.

However, there is no impression of the magic water purifier.

"Now is the time to witness the miracle!" Zhao Yunxiang made something like a vase out of leaves, which can be used to store water temporarily.

Water is pumped from the sinkhole with shells and poured into a water purifier, where the sewage slowly penetrates the fine sand and charcoal, and slowly flows out of the opening below.

However, the water that comes out of the water purifier is not very clear, on the contrary, it is still turbid.

"!!!" Han Xuening glanced curiously at the confident man, and found that his original confidence slowly turned into a blank.

"Actually...... Dirty water can also be drunk after it has been clarified. Han Xuening was persuading Zhao Yunxiang, "It's already very powerful to be able to get water from the soil, so you don't have to be too self-conscious...... Huh?"

The turbid sewage that originally flowed out of the water purifier was slowly becoming clearer, and it seemed to have reached clarity, and Zhao Yunxiang began to use the leaf water reservoir to start filling water.

"Sure enough, it was exactly what I expected!"

Zhao Yunxiang was a little unconfident from just now, the water purifier had just been completed, and he had no bottom in his heart.

The internal structure of the water purifier is not compact at all, and there is even a large gap between the charcoal and the charcoal, and the water flows through the middle, which will naturally bring out a part of the charcoal and fine sand dust.

However, after a flush of water, the density of charcoal and fine sand instantly decreases, and a small piece of the original water purifier sinks visibly to the naked eye, and the fine sand and charcoal chips are more compact under the action of water.

The density of the filler, which has almost no extra gaps, is reduced, and except for the highly penetrating water, all the fine dust that cannot be completely dissolved in water is blocked in the fine sand and charcoal.

After a few minutes......

A total of 4 leaf bottles were filled with about 2 liters of water, and more than 2 liters of water were purified, and the water purifier was saturated.

The charcoal in the water purifier absorbs too much dust and impurities, and the water purification effect is greatly slowed down, and the water is not clear.

In this world, everything has a critical point, just like a person eats, a cup holds water, and when it reaches the maximum value, it will overflow.

Just like the bamboo charcoal we commonly use to purify formaldehyde, when the bamboo charcoal is full of formaldehyde, it will not work, but will discharge the absorbed formaldehyde.

......

Everything is ready, the boiling medicine begins!

Because of the lack of water storage for shells, there are 6 natural calcium carbonate pots, and the flames are burning in the six stone stoves, and the hot water is boiling in the smoked and blackened shells.

Zhao Yunxiang was crushing the herbs with stones and adding them to the pot according to the proportions that were randomly blended.

The shell is covered with a huge leaf, which is the original pot lid.

The medicinal soup is boiling, Zhao Yunxiang has not been idle, he wrapped the blue crab with leaves, and then put it into the fire, separated by several layers of leaves, which can play a role in steaming.

As for the conch and clams, they were burned to death with fire, and then the meat was removed and placed on the stones on the outer layer of the fire.

The stone that has been roasted by the fire for a long time is equivalent to a frying pan that can be used to fry meat.

......

Just when Zhao Yunxiang was busy, Simba came out of the woods, the lion was going to forage, and it caught a big guy.