The entire low-voltage technology is not feasible and cannot be used.

One route was ruled out, and Li Mengxi continued to think of other methods.

According to the previous method of boiling alcohol, wheat straw was placed in the alcohol jar. The jar had been sealed. If heated for a long time, the jar would explode. Therefore, the way to speed up the alcohol extraction at that time was to heat the jar for a while.

Just stop, stop for a while, and then continue to heat.

In this way, the alcohol is kept at a lower temperature.

This method is available.

Alcohol can be heated intermittently to control the temperature, and it can also be used to brew medicine.

However, Li Mengxi felt that this method was too labor-intensive and the heat was difficult to control.

Temperature control method is excluded.

Methods that could not be used and methods that were difficult to control were all discarded. Then, based on Li Mengxi's limited knowledge, he thought of the boiling point of liquids, heat transfer, and other related knowledge.

When he connected these knowledge, he thought of a piece of physics knowledge.

The boiling point of water is 100 degrees, and iron can be heated to 1,000 degrees. If you put the iron in boiling water and boil it, the temperature of the iron in the boiling water will always be constant at 100 degrees, and it will not continue to heat up at all.

Heat will only be transferred from high places to low places, and the process is irreversible. In other words, water with a boiling point of 100 degrees cannot boil iron of several hundred degrees.

From this, the method of low-temperature boiling was developed. To boil the medicine, you need clear water. The water is clean and has no impurities. However, the boiling point of the water is 100 degrees, and the high temperature of 100 degrees will destroy the properties of the medicine.

Therefore, you can try to boil the medicine jar in a low boiling point solution to control the temperature.

The problem is very clear. We need to find a low-boiling point liquid. Based on Li Mengxi's limited knowledge, he first thought of alcohol. The boiling point of alcohol is slightly lower than that of water. Alcohol can be used, but alcohol is too volatile and too expensive.

This chapter is not finished yet, please click on the next page to continue reading the exciting content! Another one, Li Mengxi thought of vinegar, which seems to have a lower boiling point and is cheaper than alcohol.

Thinking further, Li Mengxi couldn't think of anything else with a lower boiling point.

It is said that the boiling point of vinegar is over 70 degrees, but this degree is still a bit high.

Li Mengxi felt that it would be best to have something with a boiling point of about 50 degrees Celsius. Under the low temperature condition of a constant 50 degrees Celsius, the pharmaceutical ingredients should be retained to the maximum extent.

However, I don’t know where to find this thing with a boiling point of fifty degrees.

If you want to test one by one, heat all the liquids you can find, such as blood, lime water, tung oil, plant ash, grease, ink, salt water, and other liquids you can find, and try them one by one. Maybe you can find a good enough solution.

It uses low-temperature liquid, but it still lacks a key item - a thermometer.

Thinking of a thermometer, Li Mengxi suddenly thought of mercury. This stupid thing, mercury, seems to have a very, very low boiling point.

However, if you use mercury to cook medicine, you may not want to live anymore, and your life will be ruined.

"What a shame." Li Mengxi suddenly muttered.

Liu Bei and Jian Yong, who were watching on one side, suddenly saw Li Mengxi get up and run away.

Liu Bei looked at Jian Yong in surprise, "Xi'er just said..."

"He seems to be saying that it's a waste of time." Jian Yong said seriously.

Liu Bei was extremely surprised and didn't know what he meant.

After a while, Li Mengxi came back with his soldiers. The soldiers came carrying large pottery urns and many jars.

Li Mengxi directed the soldiers to be busy. He pointed here and there. After saying a few words, he leaned over, covered his mouth, frowned and coughed twice, looking very uncomfortable.

Liu Bei came over and asked with concern, "Xi'er, what do you want to do? Tell me and I will do it."

Since Liu Bei asked, Li Mengxi taught Liu Bei all the methods.

Li Mengxi said that if the eggs are boiled in hot water, they will be cooked, but if they are placed in the wings of a hen, the wings will be hot and the eggs will not be cooked. Instead, chicks will hatch.

The principle is that all substances have temperature extremes, some are heat-resistant, some are not heat-resistant, and those that are not heat-resistant will die if overheated.

The same is true for herbal medicines. Among herbal medicines, there are many substances, and most of them are not resistant to high heat. If boiled in boiling water, if it is too hot, 99% of the medicinal substances will lose their effectiveness once boiled.

Therefore, the ordinary method of boiling medicine can be changed and boiled at low temperature. This method can preserve dozens of times more of the medicinal quality. This method alone is enough to revolutionize medicine.

Li Mengxi added that vinegar has a much lower boiling temperature than water. There are wizards in the countryside who use vinegar to perform witchcraft of scooping oil out of oil pans. This is a blind eye.

The little scientific knowledge Li Mengxi talked about seemed to be very reasonable and the logic was extremely harmonious. Liu Bei and Jian Yong felt very novel.

After that, put a lot of vinegar in the large urn, lift the medicine jar and half-immerse it in the vinegar, set a fire at the bottom of the urn, and heat the vinegar.

Soon, the vinegar boiled and everything was filled with sour gas.

Li Mengxi looked at the medicine jar. The bubbling medicine in the medicine jar had been boiled in the pot for a long time and there was no movement.

The water in the jar and the vinegar in the jar were in sharp contrast. The vinegar was boiling and boiling, but the medicine jar was calm.

After a long time, the medicine was boiled, and a jar of medicine was poured out, which was not enough to fill a bowl of dark concoction. The medicine was cold. Li Mengxi endured nausea and drank the medicine. While drinking the medicine, Li Mengxi regretted not listening to Liu Bei.

I regret not drinking it while it was hot.

It makes sense to drink Chinese medicine while it is hot. The taste of cold Chinese medicine is too unpleasant.

This is why, when the medicine is hot, the taste is not that strong, but when it is cold, the taste becomes stronger.

Li Mengxi frowned and drank the medicine in mouthfuls. He was thinking about this question. Could it be that because of the heat, his mouth was numb and his tongue was numb?

But something doesn't seem right. The flavor of hot things should evaporate more completely, but why is the cold medicine so bitter?

The difference between cold and hot...

Li Mengxi suddenly thought of a possibility, which seemed to be recrystallization or something, that is, when the temperature dropped, many substances would react and combine with each other.

Also, it seems that at high temperatures, more substances are always decomposed and released, but it is rarely said that when the temperature is high, substances are combined instead.

Therefore, it probably makes sense to drink medicine while it is hot. In a hot state, most substances are still separated from each other, but once they cool down, substances combine with each other.

It has always been that it decomposes more by heat, not by cold.

Li Mengxi understood this.

As for the hot medicine, wouldn’t it also make the stomach cold after drinking it?

It’s different. The human body has body temperature, and no matter how cold it is, it can’t be colder than thirty-six degrees.

After finishing the medicine, Li Mengxi looked at the empty bowl. He was sick and had finished drinking the medicine. Next, it was time to go to bed.

Seeing Li Mengxi put down the bowl, Liu Bei was about to tell Li Mengxi to take a rest. Li Mengxi preceded Liu Bei and said, "I'm going to take a rest first. I have two people to work on in the past two days for farming matters."

After saying that, he left directly.

Liu Bei's unspoken words were stuck in his mouth.

Li Mengxi has so many ideas. Although he is still young, it seems that he does not need anyone to take care of him.

Back in the room, Li Mengxi carefully thought about the measures he should take after having a fever and cold. It seemed that he should sweat more, and the more he sweated, the better.
Chapter completed!