The next day, after Ye Fei went online, he went to the law enforcement department to receive the reward for capturing Buzz, because there was a guard from Knightling Town during the arrest, so he could only get a part of the reward, but this was enough, three hundred gold coins was already a huge amount of money for the current player.

What's more, when he came out of the law enforcement department, he also got a thousand gold coins and a large amount of ore from the ambiguous wind and rain mail in the mailbox. At the current high prices of tungsten iron and silver ore, these fourteen groups of ores alone are worth nearly two thousand gold coins.

However, Ye Fei didn't plan to sell these ores, and with such a huge amount of money and ores, he returned to Nomo's engineer shop, preparing to make high explosive powder and flame explosive powder according to the ratio of explosive powder made from Cavis.

Explosive powder is not a problem, the materials on hand are enough, but the materials needed for flame explosive powder are still missing a fire magic powder.

On the way here, Ye Fei had already told God that he wanted to have light and Chen Hao had inquired about fire-based magic powder respectively, this thing was an accessory product obtained by enchanters when they dismantled equipment with fire-type magic power, and it was not widely used, but the yield rate was also very low, so the price of this thing remained high. However, God said that there should be light and Chen Hao had some such things on hand, and they mailed him a little bit respectively, of course, Ye Fei on Chen Hao's side could accept it calmly, God said that he wanted to have magic powder on the light side, and he returned some ore of almost the same price.

When Nomo saw Ye Fei, his face was suddenly full of smiles, his wrinkled face was like a blooming chrysanthemum, and he rubbed his hands together to greet him: "Aha, young adventurer, it's nice to meet you." Look, with your ores, we're more than halfway there, and the city defense is very happy with the guns we've made. ”

Ye Fei still had a good impression of this cute little engineering technician, he saluted and said, "That's really good, I hope you won't delay the progress because of the ore problem, if necessary, I still have some ore here." ”

Nomo waved his hand again and again: "No, no, no, there are enough ores, and we still lack some skilled technicians, but this problem is not difficult to solve, it only needs to take a little more effort." By the way, you came to our side today, is there something wrong? ”

Ye Feigang wanted to say that he came over to make explosives, but suddenly his heart moved, and he said with a smile: "I got a little good thing here, a new explosive powder formula." ”

As soon as he heard Ye Fei say it was a good thing, Nomo was slightly moved, but when he heard that it was explosive powder, he pursed his lips and said disdainfully: "Except for Cavis in Knightling Town, within the city of Most, I haven't heard of anyone making explosive powder better." However, the old stubborn Calvis has always been stingy, and he won't teach anyone else those skills at all, and I will also know the recipes of other technicians, if you want to learn, I can teach you. ”

Ye Fei laughed mysteriously: "I don't know if the high explosive powder and flame explosive powder are Kavis's housekeeping skills?" I finally learned two recipes from him, and I don't know if it's true or fake. ”

Nomo looked at Ye Fei blankly, and it took a while to come back to his senses, and he jumped up on his feet: "Lie...... Powder of high explosives and powder of gunpowder explosives? Damn Cavis, how did he—how did he get these two formulas out there? He looked at Ye Fei in disbelief, "Don't worry, although Cavis is a little stingy, if he says that he taught you these two formulas, then he will definitely not be a fake, but I don't understand, how could he give you these two formulas?" ”

"Ore, he needs to make a large number of bombs to give to the city defense station, so he needs a lot of black iron and tungsten iron, I used these two ores to exchange these two recipes with him."

Nomo looked at Ye Fei enviously: "This is a good thing, although it is not Nomo's housekeeping skills, but these two formulas are enough for you to derive and refine more newer formulas." ”

Ye Fei was stunned when he heard this: "More updated formulas? Mentor Nomo, how do you say that? Saying that, he looked at Nomo with an indifferent face, and secretly scolded in his heart that this guy was also an old fox, he must have taken a fancy to this formula, and hurriedly said, "If Mentor Nomo can teach me how to derive and refine new formulas, I can share these two formulas with you." ”

It is impossible for players to teach the recipe they have learned to NPC Mentor or other players, but if Ye Fei gives the recipe to Nomo, it is allowed by the system to teach it to Ye Fei after Nomo learns it. Nomo's face flushed with excitement, rubbing his hands and saying, "What you said is true?" Aha, if that's the case, I'll be sure to pass on all the recipes that have been derived to you. ”

After getting Nomo's promise, Ye Fei quickly took out the two formulas: "This is the formula that Kavis gave me, but Mentor Nomo, even if you learn these two formulas, they can't be passed on, and you can't teach them to a third person other than me for at least a month." ”

Nomoliso nodded: "Of course, of course, I'm not stupid, and the profit of making explosive powder is much greater than teaching the recipe." Nomo unfolded the parchment scroll and read it carefully, and then saw that the magic in the two parchment scrolls turned into green light and dissipated in the air, and Nomo's eyes became much brighter at this moment.

When the color of the two parchment scrolls gradually faded and the handwriting on them disappeared, Nomo raised his head and looked straight at Ye Fei: "So that's the case, that old guy from Kavis really has a knack for making explosives, but now that I have learned it, I will be able to catch up with him soon." As he spoke, he taught Ye Fei how to make two explosive powders, "During this time, I will first study some details in these two formulas, and I will inform you when I derive a new formula." ”

Ye Fei knew that in order to make the game realistic, it was impossible for these NPCs to fully comprehend new things immediately, so they needed to be given a certain amount of time, anyway, he was not in a hurry, and had the patience to wait.

After negotiating with Nomo, Ye Fei found a small room in the shop and began refining explosive powder. Dynamite powder is arguably the easiest thing in engineering to make, as long as all the materials are mixed in proportion. After making nearly 100 parts of explosive powder, he replaced the previous crude explosive powder with this explosive powder, filled the bomb, and the new bomb was made.

When he made a new bomb, the system also heard a prompt: "Congratulations to the player for improving the recipe of the Copper Bomb and obtaining a new item - the improved Copper Bomb, which increases its power by 30% and shares the cooldown time with the old item Copper Bomb." ”

Ye Fei pursed his lips, only thirty percent of his power, a bomb can only hurt more than a hundred points, and it can't be used with copper bombs. He placed the new bomb in his backpack and began to fill the Copper Bomb's shell with another type of fireexplosive powder, and when it was finished, the system sounded: "Congratulations to the player for improving the recipe of the Copper Bomb and getting a new item, the Improved Copper Bomb (Fire), which deals 30% more fire damage and shares the cooldown with the Copper Bomb." ”

Ye Fei looked at the bomb in his hand and groaned, from the current point of view, the bombs made by engineering are mainly due to the different power of the explosive powder, it can be said that the quality of the explosive powder determines the quality of the bomb to a large extent. At the same time, different types of explosive powder can produce different damage.

Subsequently, Ye Fei replaced the explosive powder in the bronze shrapnel bomb and the burst flame bomb, and the effect of the bronze shrapnel bomb was not obvious after replacing the explosive powder, because this kind of bomb mainly produced continuous damage after an iron piece burst out, and the requirements for explosive powder were not too high, so even if the explosive powder was replaced, the power did not increase much.

However, after being inspired, Ye Fei immediately created some tungsten iron pieces to replace the bronze shrapnel, and with the new high explosive powder, the power was really greatly increased, and it can be seen from the information in the bomb notes that the continuous damage has been increased to about forty percent.

As for the burst flame bomb, maybe because the bomb itself is a flame system, when the flame explosive powder is replaced, the power of the explosive itself has increased by more than 50%, and the continuous damage has also increased by at least 50%, such a huge increase, counting the overall damage, it is no less than the improved copper bomb, plus the improvement has been renamed tungsten iron shrapnel bomb, if the three bombs are fired together, the overall damage is as high as more than 400. With such a high damage, not to mention some crispy professions, even if it is a powerful MT at this stage, at least more than one-third of their health bar will be dropped this time.

Ye Fei used all the materials at hand to make these bombs, although he had enough tungsten iron and silver ore, but the amount of tungsten coal and stone was not much, but this thing was not widely used, and the price was not high. Although the player does not have it in his hand, the system NPC will also sell these accessories when selling tungsten iron and silver ore, although this kind of thing is also in stock in the major guilds, but there are not many, many times when rushing to buy ore, the people in the big guild will ignore these tungsten coal stones, and these things will gradually flow into the hands of some idle players who also want to grab some good things.

These players will sell things in the system auction house, but they don't sell for much because they are less useful.

After running out of tungsten coal stones on hand, Ye Fei went straight to the auction house and found some tungsten coal stones inside, although they were not much, but they were enough to make hundreds of bombs. Then, he flipped through the bombs he was selling, and some of the ordinary bombs sold for more than a gold coin. Although these things are made by the engineers themselves and can only be used by themselves, some engineers focus on making small things like dolls, and of course there will not be many bombs on hand, so if you want to kill monsters and level up, you need to buy bombs.

Ye Fei flipped through a few pages at random, thought about it and put some of his bombs on them, each of which put ten bombs, the starting price ranged from 2 gold coins to 4 gold coins, and the fixed price was set between 3 gold coins and 5 gold coins. Although the price is high, after all, the materials are not cheap, and the things used, whether it is tungsten iron or flame magic powder, are rare, so this price is only 50% higher than the material cost.

After doing all this, Ye Fei returned to Nomo's shop and continued to make bombs, and in less than ten minutes, a prompt came from the system that all the bombs he had left in the auction house had been sold.

Ye Fei looked at the prompts of the system, and couldn't react, how long has it been, and all of them have been sold? Thirty bombs, if all sold at a fixed price, would have to earn at least more than a hundred gold coins, and if the cost was deducted, at least fifty or sixty gold would be earned.

"me, this business is so good?" Ye Fei was a little excited, although he got a sum of gold coins and a large amount of ore from the ambiguous wind and rain, but this was not the right way after all, and there was no sense of accomplishment, if it wasn't for the ambiguous wind and rain that had offended Chen Hao, he would not have found a way to retaliate. But when you sell all the things you make yourself, it's a different feeling.

Inspired by this, Ye Fei worked harder to make all kinds of improved bombs, and stayed in the engineering shop for a whole day, and finally only kept ten of each on his body, and all the others were thrown into the auction house. These bombs are also sold very quickly, basically they will be bought within an hour or two of hanging up, especially the flame burst bomb, which is even more sought-after, after all, this kind of bomb is a group attack after all, and the amount of damage is also more considerable.