Alum is also alum, and if you want fritters to be fluffy and crispy, it is naturally an indispensable additive. Pen × fun × Pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

However, before the invention of fried ghosts, the ancients naturally did not know that this substance could be used as a food additive, but was mostly used as a medicine. Alum is used in traditional Chinese medicine, which can detoxify and kill insects, dry and damp and relieve itching; It is used internally to stop bleeding, stop diarrhea, and dissolve phlegm. Alum has a sour and astringent taste, cold, slightly toxic, and can be eaten in small amounts. Therefore, it has antibacterial effect, astringent effect, etc., so it can be regarded as a universal drug in traditional Chinese medicine.

For example, there are many folk alum home remedies, such as grinding alum and soaking it in water, soaking the feet twice a week at a ratio of 10:90, which can treat athlete's foot. Alum is burned with fire, crushed into foam, and applied to the armpits to remove the fox odor (but not to treat the fox odor).

In addition, alum can also be used as a tanning, clarifier, mordant and papermaking.

Huang Jie used fritters to draw out the alum, which naturally surprised and puzzled everyone, but after seeing that Huang Jie put the crystal cup containing the alum in the case on the high platform, he touched it and took out a crystal cup, so he also raised his glass and smiled: "This thing is caustic soda, and it is also used!" ”

But seeing that the second crystal cup is still filled with white powdered caustic soda, but this caustic soda is not the caustic soda that later generations understood, in fact, it is an edible soda obtained after highly purification and decolorization, but in the Great Song Dynasty, this kind of edible soda with high purity and white color is obtained through fire refining in the production process, so it is also commonly known as caustic soda.

The caustic soda of later generations, also known as sodium hydroxide, with the chemical formula Naoh, commonly known as caustic soda, caustic soda, and caustic soda, is a strong alkali with strong corrosiveness, which can only be obtained by climbing a very high chemical technology tree.

Saying that, Huang Jie put the crystal cup away, and then took out another crystal cup out of thin air again, which still contained white powder, and listened to him: "This thing is fire nitrate (pure nitrate), but you don't have to worry, this thing naturally can't be placed in food!" ”

Huang Jie put the three crystal cups next to each other, then stroked the dust and smiled: "These three things are today's topic, I don't know what you think?" ”

The nearly 500 people in the audience were silent, naturally they didn't know what Huang Jie meant, but there were also bold people who came to get up and arched their hands: "Xiaodao Hezhou Chen Daokun, I have seen Mr. Tongxuan!" Today, Mr. Huang Baizhu is the outline, with alum, caustic soda, and fire nitrate as the themes, could it be that Mr. Fei has found another way to find a new recipe for refining medicinal gold? ”

Huang Jie also smiled and said, "Definitely! However, you can also start with the medicine! Yes, Poor Dao has indeed found a new recipe for refining medicinal gold! ”

As soon as these words came out, everyone naturally took a breath in unison, and most of them were Taoist people.

Since ancient times, all those who are Taoist priests, the main direction of attack is nothing more than Fu Gong and Dan Shi, even if it is the Taoist sect that focuses on Fu Gong, it is more or less to pass some Qi Huang medical techniques, it can be said that Dan and Fu are not separated, and refining medicine, converting worthless copper, tin, lead and other metals into gold to obtain a lot of wealth, and it has become the direction of many Taoist priests who have crooked their minds to study all their lives.

For example, in Wei Boyang (100-170 AD, the famous Huang Lao Taoist and alchemy theorist of the Eastern Han Dynasty, Ming Ao, the word Boyang, and the number Yun Yazi) in the "Deed of Participation", there are many metaphors for the fact that lead and mercury produce lead amalgam (lead amalgam).

The famous Huangbai Shihu Gangzi (about the Jin Dynasty, at the same time as Ge Hong) in his "Catalogue of Gold Mines", has a detailed discussion on the types, distribution, grade, authenticity identification, smelting and other aspects of gold and silver ores. In order to reduce the poison of gold and silver, the "alchemy silver powder" method was pioneered, and it was followed to the Ming Dynasty, and was eliminated due to medical prohibition.

The "dotting medicine" used in the early Huangbai atractylodes was the "three yellows", that is, three arsenic-containing sulfides - realgar, orpiment, and arsenic. In his "Hardware Formula", Hu Gangzi summarized that the "three yellows" can be improved by "ambush fire treatment", and described the changes of objects when they are alloyed with hardware. Ge Hong of the Eastern Jin Dynasty pointed out in "Hug Puzi Inner Chapter: Yellow and White" that there were 25 volumes of "The Yellow and White Prescription of the Immortal Sutra" at that time, and there were more than 1,000 poems. He first received the "Gold and Silver Liquid Sutra" from his teacher Zheng Yin, and then re-sought to receive the five volumes of the "Yellow and White Zhongjing".

The "Huangbai" chapter also recounts the story of Taoist priests Li Gen and Cheng Wei's wife who made "medicinal gold" and "medicinal silver". More importantly, Ge Hong recorded in detail for the first time the method and technique of smelting a golden-yellow "copper-arsenic alloy" (referred to as "arsenic brass") from Wudu realgar and other materials. Of the large quantities of "gold" possessed during the Han and Han dynasties, a considerable part must have been obtained from this method. Liang Tao Hongjing wrote a volume of "Jijin Dan Huang Bai Fang", which unfortunately has long been lost, but it was pointed out in his "Famous Doctor's Record" that alum stone "burned for a hundred days...... If you don't subdue it, you will kill people and beasts."

However, the study of medicinal gold also entered a period of stagnation after entering the Sui and Tang dynasties, not that the decline in social demand for medicinal gold led to the lack of scientific and technological progress, but because of the serious decay and regression of the Han civilization in the Central Plains caused by the Wuhu chaos in the Western Jin Dynasty, the inheritance of many Taoist sects suffered from dynastic interruption or even extinction, and there were no people such as Ge Hong, Hu Gangzi, Li Gen, and Cheng Wei's wife who had made achievements and achievements in primitive chemistry.

Even if later generations take the classics left by these sages and draw scoops on the gourd, they may not be able to restore the synthesis experiments they completed at that time, which makes the manufacturing methods and skills of medicinal gold gradually lost.

However, as long as there is a legend of medicinal gold, it will naturally attract people who are tempted to pursue it, although many Taoist priests attending the meeting in Liyuan today do not know if there are people who specialize in the manufacture of medicinal gold, but at least most of these people know what the medicinal gold is, and the value is geometric.

Therefore, now Huang Jie directly broke the news and really found a new way to make medicinal gold, which of course shocked these Taoist priests.

In addition, most of the other people who came today are also Tokyo gentry who have read poetry and books, and now the Zhao Guanjia is now advocating Taoism, which is good and will be effective, so the participants have naturally read a few classics at home, and their understanding of medicine will not be less.

Besides, this medicine is gold, and it is said that it is medicine, but it is actually gold. If you can turn copper into gold, you don't know how many times the profit!

When he saw that Hezhou Chen Daokun's face rose like a pig's liver, he muttered in his mouth but didn't dare to ask out loud, after all, this kind of medicinal formula is a valuable thing, how can he easily come to ask for advice?

Huang Jie smiled and said, "Since the poor Dao opened the altar today, he naturally has to come up with some real things, otherwise how can he convince the public?" ”

After speaking, Huang Jie slapped his hand, and saw that the two pyrotechnic Taoists also carried a huge object, covered with a red cloth as wide as the door panel, and when it was put in the middle of the stage, Huang Jie also smiled at Chen Daokun in Nahezhou: "Come!" It's up to you to unveil it! ”

Chen Daokun was naturally excited, so he also hurriedly came to the stage, first officially made a big gift with Huang Jie's master and nephew, and then shook his hand to open the red curtain, and immediately saw the golden light dazzling, and under the curtain was a huge gold grinding mirror. (To be continued.) )