This yard is not beautiful without a door, and after chopping dry firewood, Xie Xuan dismantled a broken door panel in the house and blocked the gate of the courtyard.

This tossed in and out for a long time, but there was a loud snoring in the room, Boss Li was not affected at all, and he hated Xie Xuan at all, but he was caught by Qin Feng, and he could only work obediently.

"Chubby, break all the briquettes and throw them in the stove, the stove is too small!"

Most of the families in the north have stoves, and seeing that the briquette stove obviously can't meet the temperature they need, Qin Feng brought the iron pot that had been boiled to the stove, and smashed all the briquettes with Xie Xuan and threw them in.

There were a few briquettes that had been burned out to make a fire, and with the dry firewood that Xie Xuan had brought, the stove that had not been used for a long time quickly burned, and the flames went straight out along the stove hole used to add firewood.

Seeing the blisters bubbling up the "goo", Qin Feng picked up the stone from the stove, gently put it into the iron pot, and then covered the pot with a lid stiffly.

"Brother Feng, you ...... What are you doing here? This...... You can't eat this stone? ”

Xie Xuan, who was squatting aside to add firewood to the stove, was dumbfounded, and it was not until this moment that he understood the purpose of this pot of boiling water, but at the same time, his heart became more and more confused.

If it weren't for Qin Feng's constant orderliness when he did this, Xie Xuan would definitely think that he had a nerve problem and put the stone in the pot to boil, not to mention that Xie Xuan hadn't seen it, or he had heard it.

"You kid knows how to eat, huh?"

Qin Feng glared at the little fat man angrily, he would also be a little nervous, after all, the current operation process was dictated by the master, and Qin Feng himself had not tried it, whether he could succeed or not, he had no idea in his heart.

"No, this fire is not big enough, Chubby, you go pull the bellows!"

Qin Feng took out an industrial thermometer from his pocket, this thing was bought when he bought chromium salt liquid, and it can be used in the next few links.

Opened the lid of the pot a little, Qin Feng inserted the thermometer into it, picked it up and took a look, Qin Feng handed the thermometer to Xie Xuan, and said: "There are still dozens of degrees left, this thing is for you, when the steam in the pot reaches 212 degrees, don't heat it again." ”

Xie Xuan, who was holding the thermometer, was a little overwhelmed, and shouted at Qin Feng, who turned around and walked out of the house: "Hey, Brother Feng, I'm ...... I'm not going to use this thing. ”

"Just put the metal end in there, it's not difficult."

Qin Fengtou didn't go back to the house, looked up at the sky, and muttered: "It's easy to say this, but it's really difficult to do!" ”

Ignoring Xie Xuan, who was shouting in the kitchen, Qin Feng went straight out of the courtyard, April in the north was still a little cold, it would be more than nine o'clock, the street seemed unusually deserted, and Qin Feng's figure quickly disappeared into the night.

After about half an hour, Qin Feng returned to the courtyard, but when he went out empty-handed, he was carrying a glass jar in each hand, which seemed to contain some liquid, constantly swaying.

"Hey, I said Chubby, this time, you went to Africa?"

Carrying the glass jar to the kitchen, Qin Feng was suddenly happy, Xie Xuan, who was originally fair-skinned, would have a dark face, and he could no longer find a white place except for a pair of teeth.

"Brother Feng, Uncle Feng, you're finally back!"

Seeing Qin Feng, Xie Xuan was sad from his heart, when did he do this job? While burning firewood and pulling the bellows, Zuihou can't forget to test the temperature of the steam, and he can't wait to regenerate two hands.

"Xuanzi, don't complain, if you learn this craft, you won't have to worry about eating and drinking for the rest of your life."

Qin Feng carefully put down the glass jar in his hand, leaned over to the stove to take the thermometer, put it in the water and tried it, and his face suddenly showed joy.

"Chubby, you kid is really the one who eats this bowl!" Qin Feng patted Xie Xuan's shoulder and said, "Keep this process in mind, and remember the temperature as well." ”

"Brother Feng, I've remembered it for a long time, isn't it that the temperature of the steam reaches 212 degrees?" Although Xie Xuan didn't know why, he was not confused in his heart, he knew that Qin Feng must have his reasons for doing this.

"Okay, don't burn it yet." Qin Feng saw that the fire was almost over, and stopped Xie Xuan.

Seeing Qin Feng take a porcelain basin from the house and pour the liquid from the two jars into the porcelain basin respectively, he couldn't help but ask curiously, "Brother Feng, what are these two jars in?" Where did you get that? ”

"Hey, don't get so close, it's on your skin."

Qin Feng opened his mouth to stop Xie Xuan, who was leaning over, and said: "One of these two is concentrated hydrochloric acid, and the other is concentrated nitric acid, you remember, put 40% concentrated hydrochloric acid and 60% concentrated nitric acid, and when the two are mixed together, it is called aqua regia!" ”

In fact, strong acid needs a special container to hold it, but Qin Feng doesn't have any good containers in his hands, so he can only turn out a porcelain pot from the house, I don't know if he used to plant flowers or what he did.

Xie Xuan scratched his head and said with a bitter face: "What kind of concentrated hydrochloric acid and concentrated nitric acid?" Brother Feng, I don't understand! ”

Qin Feng glanced at Xie Xuan a little helplessly, and said, "You kid will teach me chemistry in the future, this thing is a strong acid, many times more corrosive than sulfuric acid, understand?" ”

"Sulfuric acid? This...... I know this! ”

After hearing Qin Feng's words, Xie Xuan couldn't help but take two steps back, his eyes widened and asked, "Brother Feng, where did you get this thing?" ”

In the mid-80s, there was a foreign film called "Singing in the Middle of the Night", in which the protagonist was splashed with sulfuric acid on his face and caused disfigurement, and the ugliness of the image frightened many people.

Xie Xuan's chemistry grades were a mess, but he knew the power of sulfuric acid through that movie, and his face suddenly became a little weird, could it be that Brother Feng prepared this thing, did he want to block the road and rob it?

Qin Feng replied casually: "What the school laboratory has is that this is industrial sulfuric acid, which is not worth much. ”

On the way back, Qin Feng was optimistic about the Shishi University of Science and Technology not far from Li Tianyuan's house, but it was still bright at that time, and he didn't do anything.

Of course, Qin Feng said it easily, but it took a lot of effort to steal out the strong acid of these two glass jars, and he was almost discovered by the school patrol.

It's just that chromium salt liquid can be purchased from outside, but dangerous goods such as strong acids are not bought casually, and a unit certificate must be issued.

As he spoke, Qin Feng's hand did not stop, and when the two strong acids were mixed together, a pungent yellow smoke came out of the porcelain basin.

Putting down the glass jar, Qin Feng took out the jade rough stone in the pot with a scoop, and put it directly into the basin, the hot stone encountered a strong acid, and with a "z", the smoke became bigger, and Xie Xuan, who was standing on the side, burst into tears.

"Alright, let's get out!"

Qin Feng also couldn't stand the smell in the kitchen, so he pulled Xie Xuan out, and it took more than half an hour for the smoke in the house to dissipate, but the unpleasant smell filled the entire courtyard.

"Brother Feng, what do you mean by this?"

Xie Xuan is not stupid, he has already seen a little way, Qin Feng seems to be using this way, wanting to change the stone, but there is a mystery in it, Xie Xuan can't see through it yet.

"Chubby, soaking the jadeite rough with strong acid can dissolve the impurities between the jadeite grains and the grains, without these impurities, the jadeite seed water will become transparent, and the jadeite in the shit ground can also become a glass seed......"

Qin Feng intended to cultivate Xie Xuan, and the explanation was very detailed, "In fact, in the step of soaking, it is best not to heat the jadeite, which is used when adding Qinse, but we don't have enough time, we can't wait that long, let's take a shortcut." ”

"Shit turned glass? This...... How is this possible? ”

The more Xie Xuan listened, his mouth opened wider, and he said with a look of disbelief: "Brother Feng, with this jishu, then aren't we making a fortune?!" ”

After following Qin Feng for two days, Xie Xuan still carried the difference between the various grades of jadeite, although the current price of domestic jadeite jewelry is not as good as Hetian jade, but the best jadeite carved from glass is worth 100,000 yuan.

"What do you kid think? It's old, cough, it's a bit better to say old, this is actually a fake, it can't be fake, it's not fake, you know? ”

Qin Feng slapped Xie Xuan, who was dreaming of making a fortune, on the head, and said angrily: "After strong acid soaking, the internal structure of the jadeite will be greatly damaged, and the jadeite will not be strong, and the bright and beautiful color will slowly fade, if the process is done carefully, the fading time will be about three to five years......

Qin Feng glanced at the kitchen, pondered in his heart, and then said: "Let's do rough work, just look at the present and the future, I estimate that in the last twenty or thirty days, the destroyed structure inside the jade will be completely revealed, and if you don't touch it, I'm afraid it will be broken......"

Speaking of this, Qin Feng's face became serious, "The most important point is that some jadeites made of chemical corrosive agents will contain radiation, and it is harmful and useless to wear on the body, Xie Xuan, this recipe is against the peace of heaven, and it can only be used against profiteers, and it cannot be used easily......"

At the beginning of this century and in the twenties and thirties, jadeite was hot for a period of time, and the benefits of counterfeiting were very rich.

According to Zaiyu, even in the twenties and thirties, not many people knew about this kind of craft, and he got it from a disciple of a thousand sects by chance.

Therefore, Qin Feng has reason to believe that now the third wave of jade fever in China has just risen, and those guys who specialize in making and selling fakes have definitely not studied this method yet, which is also where his confidence in the layout of the future lies.

"Brother Feng, I know, but why do I think that we are profiteers?"

Although Xie Xuan still didn't understand it, he kept Qin Feng's words firmly in his heart, and no one could have imagined that in the future, the largest jade profiteer in the country, would start in such a dilapidated small courtyard.

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