"That's right." Qingyun Daoist was a little complacent, then shook his head and sighed: "It's not an elixir, it's just an ordinary elixir, according to legend, the elixir that can be upgraded and feathered by taking it doesn't know when it will be refined." ”

With a clear conscience, Han Rui said: "As long as you persevere, I believe that the Taoist will definitely get his wish." ”

"I hope so." Qingyun Taoist said, judging from his demeanor, he was still very useful for Han Rui's unintentional blessing, and took this opportunity to express his desire to go to the Danfang to see the Danfang.

Qingyun Daoist hesitated, got up and said with a smile: "Since Han Gongzi is interested, it is not easy for the poor Dao to refuse thousands of miles, it is not that the flame in the Dan furnace is pure, it is very dangerous, Gongzi can watch from a distance, do not touch it closely." ”

Han Rui nodded hurriedly, and made up his mind, just look at it twice, Han Rui always remembered that a gentleman should not stand under a dangerous wall, if he found that the situation was wrong, he would naturally flee immediately, without delay.

The Dan room is secluded, the corner is stacked neatly stacked firewood, next to it are a few locked boxes, which are placed inside, which should be the materials for refining the pill, the center is naturally the Dan furnace, the firewood is burning underneath, the green flame is faint, the temperature is very high, the surrounding air has also become distorted, and several holes on the furnace are arranged according to the Big Dipper, emitting smoke, rising and floating, and it will not disperse for a long time.

The moment Qingyun opened the Dan room, a puff of smoke rushed in, faintly mixed with a trace of fragrance, but it couldn't hide the smell of carbon acid, and he was infected by carbon dioxide at night, and he was actually safe and sound, and his health was really good, Han Rui was secretly envious, but he was relieved to think that Qingyun Daoist had not personally refined a few furnaces of pills all year round.

Waving his sleeves to brush away the smoke, Daoist Qingyun took the lead in walking in, looking at the fact that there was no change inside, he breathed a sigh of relief, in fact, the reason why he agreed to bring Han Rui here was mainly because he was not very confident about the situation of the Dan furnace, so he simply pushed the boat down the river and returned to the Dan room.

Just when Daoist Qingyun was carefully checking the furnace fire, Han Rui avoided the Dan furnace, walked along the wall, walked to the corner, and saw a few blocked boxes, quite disappointed.

Daoist Qingyun suddenly turned around and asked with a smile, "Master Han, what are you looking for?" ”

"Nothing." Han Rui was a little embarrassed, hesitated, and said with a smile: "I'm just curious, what kind of things are used as raw materials for Dao Master Alchemy." ”

"Nature is mainly medicinal materials, ginseng, Ganoderma lucidum, strange flowers, exotic grasses, tiger bones, deer antler velvet ......" Qingyun Taoist priest gushed endlessly, all of them are precious and rare medicinal materials, but there is no mention of toxic substances such as sulfur and mercury.

Han Rui naturally felt that this was the unspoken rule of the Danshi, they believed that through mysterious power, they could turn mortals into immortals, but they were afraid that the world would know about it, and they would have bad thoughts and make people criticize, so they naturally covered it up.

After finding a gap, Han Rui hurriedly said: "But I heard that some Dao masters, when refining pills, they need the assistance of nitrate, mercury and lead......

"Hmph, these people are a shame of the Daomen, and they often threaten to use copper and iron to refine gold and silver." Daoist Qingyun scoffed and said bluntly: "That's mostly a trick to deceive people, fooling the people, Han Gongzi must not believe it." ”

Han Rui was stunned for a moment, is this considered cannibalism?

Dancheng was about to be, he was in a good mood, Qingyun Daoist didn't mind pointing out the maze, and said solemnly: "Master Han, the poor Dao has long said that turning stones into gold is a means of immortals, I am a Taoist, no matter how profound the cultivation is, before the ascension, the supernatural powers are not extensive, and it is absolutely impossible to do this kind of thing." ”

Actually told the truth, and he was not afraid that other Taoist priests would know that they would attack him in groups, Han Rui's heart was somewhat touched, but he didn't know that the alchemists of the Daomen were also divided into many schools, and the internal contradictions were also very intense.

Seeing Han Rui's strange expression, after thinking about it, Daoist Qingyun said: "Master Han, poor Dao asks himself if his eyesight is not bad, and he can also see that you are a little dissatisfied with alchemy, why are you so interested in the materials for refining pills?" ”

Han Rui hesitated, and did not answer for a while, Qingyun Daoist shook his head and said: "Since Han Gongzi is unwilling to tell him, the poor Dao will not be difficult for others, and now the matter is over, Han Gongzi, please go back." ”

The order to evict the guest was given, Han Rui did not leave, he was cheeky, and said shyly: "Dao Chief, the kid has something to ask you for, I hope that Dao Chang will give advice." ”

"What?" Qingyun Daoist asked.

"Where do you sell sulfur and other things?" Han Rui hurriedly asked, "Or did the Dao Master collect and prepare it himself?" ”

"It's a bit of both." Daoist Qingyun showed a playful smile and said, "What, Han Gongzi inquired about this, is he preparing to refine gold by himself?" ”

"Naturally, it's not ......" Han Rui said vaguely and asked: "Dao Chief, can you tell me the specific location of the shop." ”

"There are all kinds of pharmacies in the city, but the number is small." Daoist Qingyun shook his head regretfully, and said with a smile: "Forget it, tell you the truth, lest you knock on the side, when it is said that the ignitable fire oil was given to me by a Taoist friend in Hedong, as for how to refine it, I don't know, anyway, it's not what you imagined, it was obtained from coal." ”

The face was spicy, anyway, he had already got the answer he wanted, and Han Rui didn't leave any jokes, so he hurriedly said goodbye and left.

Daoist Qingyun didn't mean to see him off, he continued to take care of the fire, and after Han Rui's figure disappeared behind the palace gate, after a while, Li Xiyin came with slender steps, but his white and snowy jade cheeks contained a little anger.

"Shein, you're here." Hearing the movement, Daoist Qingyun turned around with a smile of surprise on his face.

Quietly passing by the Danfang, Li Xiyin asked: "Han Rui, I heard that you recruited him, didn't you tell you, those in the Fang City are all gossip, don't believe it, why do you have to trouble him." ”

"Nope." Daoist Qingyun hurriedly explained: "Inviting him over is definitely not asking for guilt. ”

"What's that for?" Li Xiyin naturally didn't believe it.

Qingyun Daoist hesitated, saw Li Xiyin's angry expression, didn't dare to hide it, and hurriedly told what happened just now, and at the end, he said with a smile: "It's really just a misunderstanding, and it's okay to say it." ”

"I told you a long time ago, but you didn't believe it." Li Xiyin said.

"It's me who is not good, it's me who is wrong...... Qingyun Taoist said with a smile, seeing his daughter's demeanor and behavior, he suddenly had a feeling that something was wrong.

When he returned home, Han Rui immediately ordered the servants to buy sulfur in the city, and then took some charcoal, and made it in the backyard with great interest.

"Lang Jun, what are you going to do with these things?" Liuying is very curious, and her pretty black and white eyes are full of curiosity.

Clumsily mashing the charcoal into powder, Han Rui smiled and said, "I'm making firecrackers." ”

"Liar." Liuying pouted and said, "These have nothing to do with bamboo at all. ”

What is a firecracker, that is, to take a big bamboo, stretch it into the fire to burn, and then listen to the sound, this kind of behavior must make Han Rui a little unaccustomed, he didn't have this idle effort before, but now, by Li Chengqian's request, to add color to the banquet, hearing Zheng Naoyu's unintentional reminder, naturally, he thought of making firecrackers.

Naturally, Han Rui's biggest purpose is to make fireworks, in the deep night sky, a beam of meteor sparks, shining with the brilliance of an instant, fleeting, as amazing as an epiphany, this is the big killer of the party, however, although he knows what the raw materials of fireworks and firecrackers are, but the specific process, Han Rui naturally can't be clear, so he has to slowly explore.

"The firecrackers I make are extraordinary...... Forget it, for a while, there is no reference object, and it is not clear to explain. Han Rui smiled, but his hand was not idle, and he wrapped the powder of nitrate ash in thick paper, leaving a filament as a guide.

With a satisfied smile on his face, Han Rui got up and said solemnly: "You guys stay away, cover your ears with your hands, and hear the sound of thunder later, don't be scared." ”

Several beauties were suspicious and half-convinced, but they were also obedient, away from the backyard, leaning in front of the door to watch, only to see Han Rui lighting the long lead, and quickly ran to this side, the fire flickered, and the long lead quickly burned out, and then ...... There was no movement.

After waiting for a while, everyone looked at each other, hearing Han Rui's description just now, how powerful the firecrackers were, but now it is such a result, but they want to laugh a little, and they are afraid of hitting Han Rui, so they don't dare to laugh out loud.

"Sure enough, I knew that it was such an end, the sorrow of liberal arts students." Han Rui muttered to himself, his voice was slight, but others didn't hear it, but from his expression, it was clear that Han Rui was in a bad mood.

Zheng Naoyue hurriedly comforted: "Husband, at the beginning, it is inevitable that there are some shortcomings, do it a few more times, it should be fine, if it really doesn't work, please ask someone who knows how to do it to help." ”

"Well, that's right, if you specialize in the art industry, I won't get involved." Han Rui said helplessly, there is often a big gap between theory and practice, and for a while, he was disheartened and too lazy to pay attention to it.

hugged Zheng Nao back to the room, and said crisply: "Lang Jun, how to deal with these things?" ”

"Wrap it up, that's my gift to the prince." Han Rui said casually, in fact, he was going to do this, it was not so easy to be the shopkeeper, it was originally his business, how could he not help, besides, Li Chengqian, as the crown prince, had so many resources at hand, it was really a waste not to make full use of it.

I believe that there is a theory of its own, coupled with the skilled craftsmen of the imperial court, not to mention any fireworks, even explosives and artillery, etc., can also be successfully developed, but now the Tang Mo knife is invincible in the world, it seems that there is no need for this, and the sense of secrecy of the court officials is too bad, maybe after knowing the formula, lest others do not know, it is printed on the book in a grand manner.

Han Rui shook his head, this kind of thing, let's talk about it later, at the very least, wait until you ......

(To be continued)