So the day after the Grange caught fire, Wu Cailuan was placed in a room on the side of the middle hall of the official residence, and Zhihui led people to sweep it, laying elegant smokers, screens, beds, crescent stools, and bookcases, and also added bookshelves, pen and ink, and Cailuan refiners stayed here, pastries, sencha, vegetables, and fruits served four times a day, and began to write the so-called "Taishang Three Halal Dan Tantric Method".

Gao Yue also came to visit her from time to time, firstly, to be an inspector and to prevent her from being lazy; Second, she kept asking her where she collected the Yin Yang Pill.

"Master, where did you get saltpeter?"

"There is one in the mountains of Xingyuanfu, and when the people see that there is gray frost-colored soil in the mountains, water yin, and enclosures, they collect it, shower it with buckets, and sell it to us."

"Are there any large saltpeter mines?"

"Yes, our group of people refining pills, if there is a large demand, we will let the merchants bring it from several places."

"Which places?"

"Shudi Zhelian Mountain, Fengzhou, Yangzhou, Junzhou of Shannan Dongdao, Xia Suiyin of Baiyu Mountain, of course, Qinzhou of Longyou, this kind of saltpeter produced by Danzhou is the richest, among which the saltpeter of Wudu and Erdang is the most famous."

Gao Yue nodded, the production of saltpeter in the ancient Celestial Empire was actually not to worry about at all, and then he asked Wu Cailuan again, what about "Stone Flow Yellow"?

Stone flow yellow, that is, sulfur.

Wu Cailuan told Gao Yue that the alchemist's favorite is from Gaochang and Mishan in the Western Regions, called "pure sulfur".

This kind of pure sulfur is actually the natural sulfur around the volcano, but Helong has now been attacked by Xifan, whether it is an alchemist or my Tang workshop, it is impossible to go all the way to Gaochang to engage in sulfur.

However, this is not a problem, although natural sulfur can not be obtained for the time being, but there are many "pebbles" widely hidden on the land of the Celestial Empire, this pebble is also called Nirvana, in fact, most of them are hidden in the coal seam, there are yellow-green crystals, the texture is crispy, in fact, it is now said that pyrite, craftsmen or alchemists only need to build a good furnace, build coal, smelt this stone, you can get a kind of "soap alum", widely used in the dyeing of fabrics (can also be used to make medicine), and burn out of the soap alum at the same time, The golden gas on the top of the furnace condenses, and what people call "alum liquid" is actually sulfur.

Wu Cailuan understands this, and now Gao Yue also understands, but what they don't know is that the equation of burning soap alum with pebbles and artificially producing sulfur at the same time is:

FeS2+2O2=FeSO4+S↑ (haha, Sulla, I copied it)

That is to say, saltpeter is everywhere in the area, and sulfur is complementary to pebbles, which are in the coal seams...... Does that mean that coal can be mined in large quantities? Following the cotton cloth and the "elixir" military, another bold idea of innovation surfaced in Gao Yue's mind.

Sure enough, technology is a link that gives birth to a link.

While Gao Yue was talking with Cailuan Refiner, the military retinue and the tooth soldiers came to the door and reported:

Xiao Yi, a Taoist priest of Zhongnan Mountain, threw a famous assassination and asked to see Da Yin.

"Hey, Brother Jing, why do you need to see the outside like this!" Gao Yue personally walked out of the door, led the smiling Xiao Yi, and entered the middle hall of the official residence.

Immediately, Gao Yue couldn't wait, and there were no twists and turns, so he told Xiao Yi and Pan a plan to plant cotton.

At this time, Gao Yue sent a piece of woven cotton cloth to Xiao Yi's hands.

Xiao Yi touched it, and then immediately twisted his beard, his eyes lit up.

"Okay, Brother Jing's eyes have become sharper, which shows that there is indeed a great business opportunity!" Gao Yue thought to himself.

Sure enough, Xiao Yi asked Gao Yue about the details of the four treasures of weaving grass and cotton, and then he laughed and said: "If you sell silk and fine linen, although the price is expensive, the profit seems to be quite high at first glance, but the users are limited after all, and the cost is not low; And this cotton cloth, if it is really like Yi Song said, will inevitably become the common people, the soldiers' favorite things, fifty dollars to buy poor silk cloth, and buy good quality cotton cloth, I believe that people with normal intelligence will inevitably know, Yi Song's move can be said to be the essence of the business's 'small profits but quick turnover'. ”

Seeing that the water was a matter of course, Gao Yue begged Xiao Yi to give in for the time being and hire him as the superintendent of cotton cloth in Xingyuan Mansion to coordinate the planting, spinning and marketing of this thing.

Xiao Yi readily agreed, and then he said to Gao Yue: "Yisong, I have good news for you, my friend Wang Zifu has officially agreed to send you excellent tea seedlings and related agricultural books!" ”

"How could Han Yun agree?" Gao Yue was surprised and delighted, and hurriedly pressed Xiao Yi's hand and asked.

Because he understands that the tea plantations in the Xuanshe area are now Han Rong's "cash cow", he was going to hire Prince Fu to let Han Rong know, and immediately give Prince Fu a "courtesy" in the Tooth Courtyard of the Zhenhai Navy Military Mansion, which is actually house arrest in disguise - after that, Han Rong unceremoniously wrote to Gao Yue to protest against this matter, and the implication was "Young man, you buy tea from my Xuanrun Fang Town and resell it to the northwest, you can take a head from it, but don't want to be greedy at all!" ”

Gao Yue, who was once helpless, asked Wei Gao and Du Huangshang, who had just been appointed as the envoys of the East and West Erchuan Festival, for help, but Wei Gao said that the tea in Shu was not enough to market the Qianghu and barbarians in the southwest, and I also asked the tea merchants in Shu to give you "technical assistance" for Xingyuan - but the tea merchants all regarded this technique as "the root of heavy profits", and they didn't want to leak it at all, and I couldn't do it for the time being.

So at this time, Wang Zifu broke through the danger and sent tea saplings and tea planting books, which was really a charcoal in the snow!

He was curious about how Wang Zifu bypassed Han Yun.

"Brother Fool has made a small move, no matter how powerful Han Yun is, he is not monolithic in the entire Xuanrun...... Uses the method of blinding, on the surface it is rice, but in fact it is a tea sapling, directly carry it with a thousand boats, first go to the Bianhe River, then turn to the Pipa ditch, and then go to Rushui and Yingshui, go to the water through the Jiminggang land transport, to Juchao Lake and then hire a boat into the Yangtze River, and then through Ezhou, Xiangyang, and then trace the Hanchuan to Xingyuan! For this reason, foolish brother, I spent all the remaining belongings after the transformation of the long martial artist on the money of foot strength. Xiao Yi's words moved Gao Yue to tears.

Immediately, Gao Yue swore to the gods and Buddhas, and after that, the tea supervisor of Xingyuan Mansion was also Xiao Yi.

All the mansions in the city, Xiao Yi has the right to lease them free of charge, as long as the tea and cotton return can bring benefits to our Xingyuan military and civilians.

At this moment, Xiao Yi laughed and said that you and my brother, there is no need to be born.

"Baptist Qiang Xingyuan Mansion!" Gao Yue immediately raised his hand and shouted.

"Soak the White Grass Army!" Xiao Yi also responded with a smile.

But soon, just like he did in the thatched cottage of Huaizhenfang in the past, he grabbed Gao Yue's hand, and his face was extremely serious:

"Yi Song, in this world, I'm afraid there is another life-and-death judgment A and B to write, yes or no?"