Ten years are very fast, like a white horse passing by, the Star Feather Chamber of Commerce has basically monopolized the business of heavenly treasures such as Yanguo and Red Flame Grass in Tianlei Island, and its development has become stronger and stronger.

The business once expanded to the Yannan Continent, and with the help of Fengluan Wule Xing, some sales channels were successfully opened, but fortunately, he had been doing business in the name of Wu Le Xing, otherwise the big factions such as Qingyuanmen and Kuixingmen would definitely join forces to boycott.

Lin Chenyu's eight shadow guards are also completely hidden in Tianlei Island, and all kinds of information from the royal family and various continents and counties will be transmitted to Nanling Town through the caravan, gathered on his desk, and then analyzed and classified by Chen Ziang, the secretary office, and the more important ones will be sent to Lin Chenyu.

And Lin Chenyu successfully rescued Teacher Yan Yi after collecting three Heaven Swallowing Stones, and Yan Yi also shook his head at the Ah Mao ten years ago, not knowing the other party's origin. Seeing that the ten-year period was approaching, Lin Chenyu decisively took Teacher Yanyi to hide on Tianlei Mountain.

Teacher Yan Yi was trapped in the boulder, and he also gained a lot, it turned out that Yan Tianzun left a large number of cultivation exercises and refining methods in it, and took advantage of the convenience of the Chamber of Commerce to collect a large number of raw materials, and took this opportunity to start a retreat with Lin Chenyu.

On Tianlei Mountain, Lin Chenyu was bare-chested around an iron furnace, which had a raging blue flame, refining an unknown piece of jade, only to see that he was constantly sending in aura, and it had lasted for three days at this moment, and the unknown jade stone had finally changed a little.

The spirit fire calcined, the impurities in the jade were gradually removed, and the original appearance of the jade was also presented in front of his eyes, crystal clear, irregular circle, when the cold water cooled down, the jade finally showed a trace of dark green, like blood, winding and circling.

"Teacher, is this the spirit jade?" Lin Chenyu said as he played with the jade in his hand.

Yan Yi stood aside in a gaseous form and said with a smile: "It is the spirit jade, refine another piece, and then according to the formation, it can be used for thousands of miles of sound transmission." ”

Isn't this similar to the phone call in his previous life? Lin Chenyu just thought about it in his head, and didn't say it, since Yan Yi condensed his gaseous body, he no longer transmitted sound in Lin Chenyu's mind, and the large number of cultivation jade books that he obtained from Yan Tianzun when he fell happened to choose two books that were not very valuable to use as sound transmission stones.

There is no way, the Xingyu Chamber of Commerce has collected for five or six years and has not found a piece of spirit jade, and even the Tianfeng clan of the Yannan Continent has been looking for a long time, but they still haven't found it, and destroying the jade book refining sound transmission stone is also a helpless move.

Another two days have passed, this time Lin Chenyu's fire control skills are more skilled, looking at the two pieces of jade in his hand, his heart is also a little excited, and according to the book, his hands keep flying up and down, and the spiritual power is constantly intertwined, and a magical circular formation is depicted.

Whether it can be used or not, I only know if I have tried it, I left one for Mr. Yan Yi, brought another one for myself, and flew directly down the mountain, after flying for about a while, he stopped, injected spiritual power into the sound transmission stone, and said: "Teacher Yan Yi, can you hear me? I want to eat roasted yams, large pieces, two pieces are enough, haha!"

Yan Yi, who stayed in the refining room, naturally heard it and replied, "What is the roasted yam?"

Lin Chenyu also immediately received Yan Yi's question, and said, "Nonsense, it seems that the effect is good, I'll go back." ”

As soon as he returned to the refining room, Lin Chenyu smiled and said, "Teacher, did you say that this sound transmission stone can be refined in large quantities?" I want to configure a piece for the Shadow Guard to facilitate communication. ”

Yan Yi had a black line on his face, and said speechlessly: "There are so many people in the Shadow Guard, I'm afraid that the old man's jade books are all destroyed!"

"Uh...... I forgot, I forgot, I'm sorry, haha!" Lin Chenyu touched the back of his head and said embarrassedly.

If you want to configure the Shadow Guard with sound transmission stones in large quantities, you need a large amount of spirit jade, and now I don't know where to start, who knows if the spirit jade has disappeared after the Hongmeng plane has been downgraded by the plane.

It seems that we still need to find a replacement for the spirit jade, and I don't have a clue for the time being, the sound transmission stone has been successfully refined, and next, we have to refine a weapon that is in hand. Since his rebirth, Lin Chenyu has always been very curious, there are basically no weapons in this world, except for some iron tools that ordinary people need for production and life, and the monks are basically bare-handed. I guess ordinary iron weapons can't break through a monk's defenses, so no one uses them.

However, now with the guidance of the upgraded version of Teacher Yan Yi, it is not impossible to refine a weapon that can hurt the monk, and the Star Feather Chamber of Commerce has already collected all the required materials, the cold iron ore of the Cold North Continent, the palm spirit bead of the Dongqi Continent, the quenching yuan stone of the West Demon Continent, and the tail feather that was finally deceived from the Tianfeng clan, plus some strange elixir spirit grass.

Although the materials are all collected, the amount is not very large, Lin Chenyu must grasp every step, a slight mistake will waste some materials, and he only has three chances.

With his hands spread evenly, the spiritual fire crept out in his palm, lit the iron furnace, and then put the raw materials into the refining step by step, until the cold iron ore in it absorbed the essence of various materials and removed all impurities, and then proceeded to the next step.

Soon, the cold iron ore became cold iron, and it only needed to carry out the second step of formation carving, and it was successful.

Lin Chenyu's left hand carefully used spiritual power to control this cold iron, slowly flipping, and his right hand slowly carved the formation, the cold iron rotated around, as long as the formation was connected end to end, it could be successful.

But as soon as he carved it into a formation, he heard a slight cracking sound, and the cold iron instantly turned into dust and fell to the ground.

"Failed?" Lin Chenyu looked at everything in front of him, a little incredulous.

Yan Yi still stood aside, not daring to bother with any words, only after the refining failed, did he say: "It seems that this iron furnace is not tight enough, and there are impurities that you don't want to take care of enter it, presumably you also know that the aura is also divided into attributes, and refining weapons only need fire attributes, but if the furnace is not good enough, there will be aura of other attributes entering it, which will affect success or failure!"

Lin Chenyu looked at the remaining materials placed next to him and said, "What if you make a stove out of cold iron?"

Yan Yi thought for a moment and said: "Cold iron is definitely better than iron iron, if so, then you only have one chance, and if you fail, you will have to spend time looking for cold iron ore." The Cold Northern Continent has always forbidden the outflow of cold iron ore, and these cold iron ores have cost you a lot of money. ”

"But there is no other way at the moment, only to try!" Lin Chenyu said firmly.

Just as Lin Chenyu was about to start refining the cold iron furnace, an uninvited guest came outside the door, and the ten-year appointment had arrived.