The moment Liu Tan thought of coal tar, his first thought was that there was a way out for his candles.
The most lacking thing for candles is paraffin, which is extracted from petroleum.
Coal tar is also known as artificial petroleum, which can basically be used as a substitute for petroleum. In other words, many things can be decomposed from coal tar.
But he soon realized that with artificial oil, why would he still focus on candles? Candles can be said to be the most inconspicuous product among all!
Many things can be refined from artificial petroleum, including mothballs for repelling insects, pesticides, and the one that everyone is most familiar with - asphalt.
Of course there are other things, but Liu Tan is not a professional in these areas after all, so he can't think of the rest and can only do it step by step through experiments.
Among them, asphalt is the most useful. It is waterproof and moisture-proof, and is very useful whether it is for paving roads or other purposes.
After Liu Tan's excitement, he felt a bit nauseous from the smell. Suddenly remembering that kerosene was highly carcinogenic, he quickly waved his hand, "Take them away first! Don't throw them away. These things have important uses."
Bigo was a little confused. Isn't this the product of burning coal?
But he still obediently had these things stored away, turned to look at Liu Tan and asked, "Your Highness, what should we do next?"
Liu Tan said, "No need to worry. Let's save those people first at all costs."
As soon as he finished speaking, news came from the other side: two of the four people died, including the two who were unconscious.
Liu Tan was silent. He was suffering from carbon monoxide poisoning. Being in a coma meant that he was severely poisoned. This kind of situation would easily cause problems if not treated in time in later generations, let alone in this era.
He sighed and said, "Give them a proper burial and give their families some compensation."
These people were all his slaves. In fact, he didn't need to care about them even if they died. The master had the power of life and death over the slaves. It was just that he was soft-hearted. When he thought about the people who were fine just now and were gone in the blink of an eye, he couldn't help feeling depressed.
After a while, someone sent a message saying that the emperor had returned to Changshou Palace accompanied by Lu Xuan.
Liu Tan remembered that he had just sent a verbal message to Liu Che. In order to reassure Liu Che, he rushed directly to Changshou Palace.
After meeting Liu Che, Liu Che asked him: "Didn't you poison him?"
Liu Tan smiled bitterly and said, "No, it was just a misunderstanding. When coal is not completely burned, it tends to produce a poisonous gas. We must maintain ventilation. As a result, they closed the door too tightly, and that's why the accident happened."
Both Liu Che and Lu Xuan breathed a sigh of relief. When they guessed that it was the Huns who poisoned them, they wondered if the Huns were going to cause trouble again after just two days of being quiet.
Although the issue of mutual trade has been agreed upon, how could that psychopath Wu Shilu use ordinary people's thinking to make inferences?
Maybe he was seeking trade while also going south to plunder.
Liu Che was not afraid, but Lu Xuan was worried that if the Huns really came, even if they did not attack Shuofang City, Liu Che would be stopped at all costs if he wanted to come to the Northern Border Kingdom again in the future, right?
After all, it's too dangerous here.
From Lu Xuan's perspective, he didn't really want Liu Che to come, because once Liu Che came, he and Liu Tan would basically have no time to be alone.
After finally getting a little bit, he was caught, and even Lu Xuan was left with a psychological trauma.
However, the benefits that Liu Che's visit to the Northern Border Kingdom brought to Liu Tan were also visible to the naked eye. The most important thing was that there were only the two of them, father and son, here. Unlike Chang'an where there were many people, the father and son could enhance their relationship to the greatest extent possible. This was a benefit that could not be measured by money.
Now he could finally relax and turned to Liu Che and said, "I will go and withdraw the people."
Liu Che nodded: "Go."
Liu Tan watched Lu Xuan leave and asked curiously, "What did A Xuan send someone to do?"
Liu Che paused. He didn't know what to think when he heard him call Lu Xuandu the Little Kunmi of the Wusun King, but he still said, "After you left, he sent people to check if there were any Xiongnu ambushes nearby."
After hearing this, Liu Tan secretly took note of it but didn't say much.
Then he heard Liu Che ask again: "Is the glass still burning?"
Liu Tan paused. He himself was not in the mood for the time being, and besides, someone had just died, so the craftsmen probably had psychological trauma, so he originally wanted to give them a few days off.
But Liu Che didn't care whether the craftsmen were afraid or not. After making sure that Liu Tan was not threatened, the first thing he thought about was whether the glass could still be made.
After all, time was too tight. He couldn't really not return to Chang'an, but he wanted to see Liu Tan's masterpiece as soon as possible.
Liu Tan had no choice but to say, "I came here directly because I was afraid that the emperor would worry. I will send someone to tell them to continue firing."
Anyway, with the lesson learned last time, as long as we keep the ventilation good and tell them not to burn the glass too low, there shouldn't be any big problems.
As for coal tar, this thing may have to wait until Liu Che leaves before it can be properly arranged.
Liu Che nodded without urging them too much. He just waited for Lu Xuan to come back and then invited the two of them to have dinner together.
Even though he was sure that no one dared to poison Liu Tan, Liu Che was still a little worried and sent people to Liu Tan's palace to conduct a thorough investigation. He let Liu Tan eat at his place for the next few days.
After giving the order, Liu Che wanted to explain to Liu Tan.
After all, although the starting point of his action was for Liu Tan, if you think about it from another angle, it might make people think that he did not trust Liu Tan and wanted to take this opportunity to thoroughly investigate the Northern Palace to prevent anything from happening that he could not control.
In fact, Liu Che naturally had no such idea. Among his many sons, he trusted only two, Liu Ju and Liu Tan.
Because of this, he didn't mind spending time explaining to Liu Tan.
Just as he was about to explain, he saw Liu Tan staring at the fish that had just been served on the table and observing it carefully, as if he didn't take Liu Che's order seriously at all.
Liu Che: ...
For a moment, he didn't know whether to be relieved or angry. He gave such an important order, but in the end, he was not even as good as a fish in front of Liu Tan?
Liu Che raised his chin slightly and asked, "Tan'er likes eating fish?"
Liu Tan looked up at Liu Che and smiled, "No, I just thought this fish looked familiar. Is it one of those fish that Father caught himself?"
Liu Che didn't know what had touched his sweet spot, and he said with great joy: "That's right, I specially asked someone to roast it for you, come and try it."
Liu Tan became a little worried when he heard this. He agreed with a smile and turned to look at Miao Rui. Miao Rui immediately took the opportunity to serve the dishes and bent down in front of Liu Tan.
Liu Tan whispered, "Go ask if these fish were caught from that oxbow lake."
If that was the case, he really didn't dare to eat it, and even had to find a way to prevent Liu Che from eating it.
Originally, he thought ice fishing was just for fun and didn't think Liu Che would actually eat it, but he actually asked the kitchen to do it?
Liu Tan felt very bad. Although they were wild and natural, no one could guarantee that these fish were free of disease. How could they dare to eat them?
Miao Rui stepped out, and Liu Tan symbolically picked up a few pieces of food with his chopsticks and put them in the bowl without touching it.
After a while, Miao Rui came back stealthily and said, "Your Highness, I have already found out. The kitchen has replaced these fish with other ones."
Liu Tan breathed a sigh of relief. Fortunately, the kitchen staff was also afraid of death.
He looked at Liu Che who seemed to be eating happily, and after thinking about it, he decided not to tell him and let him continue to enjoy himself.
Perhaps because he felt a sense of accomplishment from catching the fish himself, Liu Che ate quite a bit, but in the end he still said, "It would be better if the fishy smell was less."
Liu Tan thought for a moment and said, "Then tomorrow I'll have them research a new approach."
Liu Che was curious: "Can you cook fish?"
Liu Tan said, "I don't know how to make it, I just know a few recipes."
Ever since he discovered that no matter what he took out, Liu Che could make up a story to justify it, Liu Tan became more and more unscrupulous.
Anyway, he doesn't need to rack his brains to explain.
As expected, Liu Che subconsciously thought of the recipe from the immortal world, and couldn't help but be very curious, so he said directly: "Then I will go catch two more tomorrow!"
Liu Tan: ???
Do you like fishing so much? Is fishing an activity that all middle-aged and elderly men can't resist?
Liu Che also added: "The King of Wusun also caught two today. Let's go with him tomorrow."
Both Liu Tan and Lu Xuan were remarkably calm. Wasn't it just that they were separated? That was perfectly normal. Anyway, they shouldn't even think about getting intimate while Liu Che was around. They should just wait patiently for Lu Xuan's return.
But it was not until the next morning that Liu Tan realized that even if the fish were switched, he had to wait for Liu Che to come back from fishing. How could he catch fish if Liu Che didn't come back?
So what is the meaning of his stay?
After Liu Tan returned to the palace, he began to wonder whether he should ask Huo Guang about the progress of the academy or study coal tar?
To be honest, through yesterday's understanding, Liu Tan determined that the source of coal tar is basically low-temperature combustion and isolation from oxygen, which is basically very similar to the low-temperature distillation method of later generations.
But these few points are not enough to start the experiment. This is different from before. Low-temperature distillation must also isolate oxygen, which means there is no ventilation, which can easily result in loss of life.
The most important thing is that these things are actually very harmful. Not to mention the harm to the environment, the current living standards have not improved, so it is useless to consider environmental protection. We can only try not to cause too much damage.
The problem with this is that most of them are poisonous and can easily make people who come into contact with them sick or even die.
According to the current level of scientific popularization, Liu Tan could already guess what would be said: The King of the North's new kiln was cursed by the immortals and gods, and anyone who entered it would die soon.
In order to avoid shooting himself in the foot, Liu Tan decided to wait until Liu Che passed away and study it carefully when he had the energy.
Just as he was about to call Huo Guang over, Bi Gao came hurriedly over with a look of joy on his face and said, "Your Highness, Your Highness, the kiln has already produced glass."
Liu Tan knew they were calling for glass, but he didn't care. He just said happily, "Let's go and take a look."
When he got there, he saw a bunch of round, green, so-called glass products outside.
When he saw the freshly baked glass balls, he suddenly remembered an advertisement slogan: XX beer, century-old yeast, and a traditional malt aroma!
Continue read on readnovelmtl.com
