This lord is very scientific.

Off's own plane.

In the thatched house on the top of the mountain, a group of maids came and went, accompanied by an annoyed voice.

"Andrew's Leg! That's sulfur! Be careful! Just such a mine is not enough for me to play with, so don't spread it! The ash just now is worth at least one-tenth of a copper plate!"

"Oh~ Master Lin Ke! Who allowed you to touch the glass?! This is Lord Aof's creation!"

"Hurry up, hurry up! Move faster!"

"Slow down, slow down, put it down gently!"

Granny Xisai, who was getting stronger by the time, put her hands on her hips and arched her back, shouting to the maids who were carrying things, with a loud voice.

These maids carried mostly refined sulfur ore and saltpeter, as well as some burned charcoal.

These maids came to do these tasks for the first time and were not very skilled, so Grandma Xisai was anxious about what she was doing.

Lin Ke quickly stepped forward to give instructions together. After about half an hour, order was restored here.

"Hey, you are worthy of Master Lin Ke." Grandma Xisai wiped the non-existent sweat on her forehead, complimented Lin Ke, and then continued: "Master Lin Ke, is there going to be a war?"

Lin Ke nodded and frowned: "Yes! A war to protect our territory and people."

Grandma Xisai seemed to understand but stood there for a moment.

Then she suddenly took out a paper bag from her arms and handed it to Lin Ke: "By the way, Master Lin Ke, isn't today your birthday? I'll give you a birthday gift."

"Oh? What is it?" Lin Ke was slightly interested.

Birthday gifts are also common in Nasenge. For example, today he has many birthday gifts. In the evening, he will also receive gifts from his parents, such as Fulong and others.

But at this time, he had no intention at all.

At this time, Granny Xisai took out a small wrinkled bag from her arms, and some powder could be vaguely seen inside.

Lin Ke raised his eyebrows: "What is this?"

Grandma Xisai had a reluctant expression on her face and said coquettishly: "This is my new little treasure. According to the best ratio of black powder you said, I found this formula... You must be careful, Lin Ke Master, this is the last bag I made, the saltpeter is almost gone."

Best ratio!

Black powder was one of the four great inventions, but because it was not taken seriously by people at the time, it was made into fireworks.

The initial production of black powder also contained many impurities.

Lin Ke remembered that black gunpowder consisted of one sulfur, two nitrates, and three charcoal. He also remembered that the optimal combination ratio of black gunpowder was 10% sulfur, 15% charcoal, and 75% saltpeter.

But the specific percentage was not told to Grandma Xisai, but she was asked to explore by herself.

Unexpectedly, it was discovered within a few days.

It's a pity that now is not a good time to teach, guide and teach Granny Xisai, otherwise Lin Ke will definitely have to talk more.

For example, the connection between atoms and chemical equations.

Now, Lin Ke could only praise a few words and asked Granny Xisai to make explosives with all her strength: "You did a good job..."

Grandma Xisai's face was full of hope, and she followed closely and said: "Master Lin Ke, are you going to increase my salary? I remember this is called salary, right? The worker's capital, capital means money."

This money jar only knows money.

Lin Ke's words of praise were suddenly stuck in his mouth. He couldn't say anything out, so he had to say: "...Do a good job! If you perform well, I will consider giving you a salary increase after the war is over!"

Let’s draw a big pie first.

Grandma Xisai cheered immediately, and then ran to order the maids like a little girl over a hundred years old.

Lin Ke shook his head with a smile and walked back to Aofu's thatched cottage.

When Lin Ke arranged it, Aof said that he would come back to make some magic items after making the glass.

Now it seems that the glass has been made, Lin Ke comes to see how it is going.

Walking into the thatched house, it was clean and tidy. There were some utensils that Auf often used, as well as some thunder and lightning preserved with magic items.

For example, on a platform, there are two thick blades rising and falling out of thin air, and in the center of the blades is a slender lightning bolt.

In other places in the house, there are some things with magical fluctuations. It can be seen that these should be Auf's collection.

Aofu had already foreseen Lin Ke's arrival and was standing next to the stage, holding a light blue pen in his hand.

"Xiao Linke, this is your birthday gift." Aofu raised his hand slightly nervously.

Lin Ke knew what was wrong with his teacher, so he didn't say anything. Instead, he looked at the pen and said happily: "Teacher, what kind of pen is this?"

This pen is completely light blue, and the tip seems to be some kind of strange blue metal. The pen barrel seems to have blood flowing, and there is a circle of thin fluff that is beating around it, and there is actually a bit of furry animal hair at the tail.

Feeling Lin Ke's joy, Aof secretly breathed a sigh of relief and introduced: "The compensation that the little guy from the Deep Blue family gave us before, there are also some miscellaneous things... By the way, there is also the tail of the Deep Blue Giant Tiger. It became this pen.”

When it comes to magic items, Aof relaxed slightly and continued: "This pen is considered a fifth-level magic item, and it has the characteristics of 'hard', 'awakening', and 'fresh'. It is a gift for you."

With that said, Aof handed the pen to Lin Ke.

"Thank you, teacher!" Lin Ke thanked him, and then hurriedly checked the pen.

Magic items!

In other words...professional items!

Ordinary items, such as daily utensils such as the cups and plates given to him by the Marquis on Ice, are of little use and have no special characteristics.

It is made by a [forger] or [blacksmith] using ordinary materials. Even if it has a grade, it is not precious unless it has some rare or powerful characteristics.

Although the grade of this pen made by Aofu is not high, it is specially made for people who use the pen.

Lin Ke held it, and a coolness rushed to his brain. He felt that his mind was much clearer, and the sleepiness he had originally felt disappeared.

Characteristics - refreshing! Refreshing!

Rubbing the pen, there is a very comfortable feeling. The fluff feels very soft. The fluffy tail at the end of the pen seems to be able to clean the notes when Lin Ke moves his mind, similar to an eraser.

"This pen has a trace of deep blue blood, which I extracted from the tail of the deep blue tiger. It was originally impossible to extract it...

"But the thing that the little guy from the Deep Blue Family compensated you with, the Sleeper Wood, happens to have this effect..."

Ofu began to talk about the wonders of this pen, looking quite proud.

As a professional who does not specialize in magic items, it is quite amazing that he can make such a thing.

"So that's how it is. "While listening to Aofu's introduction, Lin Ke tried to nurture the pen with his professional power.

In short, the material of this pen was what the steward of the Deep Blue Family lost to him because of the sneak attack from behind by Master Delin.

Including the tail feathers of the eighth-level magic beast Blue Smoke Owl and the Sleeper's Wood.

In addition, when Lin Ke met Knicks, the tail of one of the Deep Blue Tigers was cut off and then preserved.

Finally, this pen was formed.

However, the Deep Blue Tiger, a failed creation of the Deep Blue Family, actually has the blood of their family? This is quite strange.

"...Nurture it more, it will have room for improvement in the future." Aofu explained, and couldn't help but touch Lin Ke's head, and then pinched the baby fat.

"Okay, teacher. "Lin Ke was very happy. This birthday gift is really great! So feel free to pinch your face.

As for the nurturing of magic items...

When a hatchet is nurtured by a legend for a long time, it will be more powerful than a legendary weapon in the hands of a non-legendary person.

The original words are that the hatchet of the main god will also become a main artifact.

Anyway, that's what the novel says.