Yangcheng is in the hinterland of more than 300 miles north of the southern vein of Zijun Mountain, the population is not large, it is a small border town of the Jihai faction, not only is it famous for selling a large number of various pills produced by the Jihai faction, but also because it has a strong refining pill resources, among which it is particularly famous for a mineral product called Wuyan black gold. This kind of ore is inky black all over, and it can emit a large amount of heat after being ignited by the fire aura, but the flame is not visible to the naked eye, so it is named for this reason, and it is another stable and lasting heat source in addition to the fire of the earth lungs. Dan masters who lack alchemy heat sources in near and far often come here to buy flameless black gold or directly rent an alchemy room that uses flameless black gold to use it.

The reason why Shi An chose this place as a place to settle down was because he considered that there were places where the Extremely Prosperous Lung Fire in the Zhao Kingdom went, one was the Jihai Sect, the other was the Wuluobao Sect, and there were also heat sources that could be used, Kaiyuan City and Yang City. Yangcheng is at your feet, so you don't have to go to Kaiyuan City, which is more than a thousand miles away.

Like other cities where cultivators live together, the four streets in the middle of the city are places where monks' goods are traded, and the rest of the streets are sold for non-cultivation items.

didn't dare to bring out Zhu Liang, Shi An picked it for a long time before buying him a pair of "Xiudou Chess".

There are not too many entertainment items in the world of cultivating immortals, and ordinary toys are not suitable for monks like Zhu Liang, and cultivating chess is an entertainment item that is often used to pass the time among monks, similar to chess in the secular world, and it is also a puzzle game for the two armies to fight.

Fortunately, Zhu Liang still remembered the rules, and he didn't need Shi An to teach him anymore, but he was just a little beast and couldn't play against him. Zhu Liang had no choice but to play two roles by himself.

Shi An found an alchemy room, and the janitor introduced him to several alchemy caves of different grades, "The cave of this alchemy room is divided into three grades, heaven, earth and people, the most expensive Tianzi number, thirty lower grade spirit stones a day, using the first flame of non-flame black gold, the heat is stable and the heat is large, it can be used as the first choice for refining refractory pills, the ground number is a little worse, it is a second flame, the heat is large but not very stable, for refining the pill that is not so particular, it is good quality and cheap, twelve spirit stones a day." As for the font size, it is the tail flame, the heat and stability are unsatisfactory, it is generally used by the Dan master who does low-level pills or just to practice the basic skills, as long as three spirit stones a day, I don't know which kind of predecessor you want to choose?"

"Then choose the Tianzi Cave Mansion! This is ten days' rent. Shi An casually threw over three medium-grade spirit stones, the guy was a little dumbfounded, he had seen a Dan master who was generous, but he had never seen a monk who didn't bargain and paid ten days' rent at once, and after taking it, he smiled with a smile on his face: "I'll find you the best Tianzi Cave Mansion, if you have any other needs, just ask." ”

Entering the innermost cave, the young man pressed a mechanism by the door, and the stone door opened silently. The room was not large, only three feet in circumference, and in the middle of the room there was a platform more than two feet high and the size of a tabletop, and the bottom of the table was empty.

The man walked up to the platform and stretched the fingers of his right hand forward, sending out a stream of fire aura, and the room was steaming hot.

"You can now use it by simply placing it on the platform, you can't see this flame, so be careful of getting burned. The guy said graciously.

"Okay, I'm still bothering you to pay more attention to my heat here these days," Shi An casually took out two lower grade spirit stones, "You take this first, I want to refine some important things, and there will be a heavy reward after the deed." ”

The man took the reward with a smile, and said in his heart that he must serve this God of Wealth well, maybe when the refining is done, he will give himself a lot of benefits when he is happy, so he nodded yes and left with a thousand thanks.

Shi An has already found a smelting method for ethyl crystals in "Cloud Experience". The melting point of ethyl crystal is not high, and the heat required is also small, so you can borrow ordinary medicine pods. Yaoding Shi An has one in his hand, that is, the one from Liu Chen, although he can't tell the grade, but the product of the Extreme Sea Sect is by no means an ordinary thing, and this time Shi An plans to use it to melt the Yi Crystal.

Because what is to be made is just a coffin, not a magic weapon, a magic weapon, and no special refining skills, just pour the melted ethyl crystal liquid into the mold to form a plate, and then carve a few formations, and finally the plate can be spliced and fused. The mold had been made beforehand, and it didn't take much effort, and a large stone slab was used to make a mold eight feet long, three feet wide, and one inch thick, and a small stone slab was made into a mold three feet long, three feet wide, and one inch thick.

He took out a few stone slabs from the cave stone and sketched them casually, and it didn't take much time to complete a "fire wind array" commonly used in refining shops for blessings, so that there would be a larger and more stable heat source for melting the ether crystal. Put the medicine tripod on the table, and when the tripod was already red, he first tried to throw a fingernail-sized piece of ethyl crystal ore in the tripod.

The ore sizzled in the ding, first rising a puff of black smoke, and then slowly melting and becoming smaller, in less than a cup of tea, it had all turned into liquid, and there was a layer of black impurities on the surface, and now was the key to the success of refining, Shi An called up his divine sense, only sucked lightly, and peeled off the layer of impurities and threw it on the ground, and then poured the ethyl crystal that had been melted in the medicine tripod into a small mold.

Seeing that the first melting of the ethyl crystal was very smooth, the second time Shi An put in the ethyl crystal of the small half medicine tripod and slowly melted it.

Five days of non-stop work had exhausted Shi An enough, and all the needed acetocrystals had been melted and poured into the mold, and now there were four long plates and two short boards on the ground, and all the melting work had been completed. There was still a small amount of ethyl crystal ore left, and he didn't plan to melt it for the time being.

After a few days of use, Shi An realized more and more that this flameless black gold was really a good thing, and it could also be used to refine the pill refiner without earth fire, and he planned to buy some back for backup when he left.

Entering the cave, Tianshi looked at Zhu Liang, who was playing chess and practicing chess, and An An, who was still sleeping in the corner, Shi An made six finished boards according to the practice of carpenters in the secular world, made tenons and tenons and spliced them together, and carved several formations to maintain moisture and temperature inside the coffin, and put a thick quilt bought from the market at the bottom, and then carefully placed Yan'er's body in it. This coffin is translucent, and the plate is not formed at one time, and there are many color inconsistencies and textures, which are not very beautiful.

Shi An put a bouquet of unknown white flowers next to this flower-loving girl, looked at Yan'er who was sleeping peacefully in it, and said with some apologies in his heart: "Yan'er, I can't get home at my beginner's refining level, so I'm really sorry to let you live in this humble place for a girl who loves beauty, and when I have the opportunity to find a better way, I will build a better place for you again." He really didn't want to say the word coffin, lest he think that she was dead.

After leaving the Cave Heaven Stone, he sat down next to the refining furnace again, and for the next three days, he smelted some of the other materials he had accumulated in his hands, and made several array plates with some of them. With the previous production experience and the better production conditions this time, the Boundary Array and the Dense Array Plate made this time are much stronger than the two made before. In addition, he tried his hand at making several other commonly used array discs. In the last two days, he took out the flying boat and carved several formations on it, in addition to increasing speed and strengthening defense, he also added a phantom array.