Poof!

Lin Yu saw the gunpowder formula on the wide bronze table in front of him, and the things needed to make the bomb, and his liver thumped.

The literati of this era, except for the pharmacists and the Tiangong Academy, no literati came into contact with saltpeter and sulfur.

Naturally, there has not yet been gunpowder in this world.

Quack!

Without warning, between heaven and earth, lightning struck without warning, thunder sounded, and dark clouds rolled and gathered.

All of a sudden, it seemed to be dark.

"The weather is really changeable, and the old man clearly calculates that there is no thunder and lightning today......

"Well, the weather is a little weird. ”

The earth-shattering thunder outside made the six hall masters a little surprised, after all, the Tiangong Academy was suspended in the air, and these thunderbolts still had some impact on the Tiangong Academy.

For example, the movement is particularly scary.

However, Lin Yu was shocked by the sudden lightning and thunder......

At the beginning in Mayang County, he just wrote a Qingping tune by Li Bai, and then split the thunder and lightning.

Now that he hasn't started to build, the world has begun to change, do you want to give up?

"No, in order to save mineral resources and 60 million silver exports per year, by the way, I slapped Zhixuan in the face, I am afraid of a basket ......"

Lin Yu gritted his teeth and fought hard.

Seeing that Zhixuan had already sworn and began to get busy, he poured the bronze pen with his talent and engraved the divine pattern on the body of the embroidered spring knife, the speed was very slow, and he was concentrated.

Lin Yu also started immediately.

Regarding the ratio of black powder, it was almost a well-known thing in his previous life, and even he had drummed up explosives to blow up fish in the orphanage.

After memorizing it in my mind, I directly started the journey of gunpowder proportioning.

"What is this crown prince doing? How can alchemy be done without an alchemy furnace?"

"Critical ...... Eggs, fish gelatin, sharp iron sheets, tin cans...... He doesn't know how to cook, he eats iron, he eats dirt?"

The six hall masters have been confused until now.

Ahem!

Even Hongwen Tianzi was a little embarrassed, after all, the crown prince was his emperor.

Although I believe that Lin Yu Chengzhu is in his chest, these things are ...... What can be forged?

"Zhixuan is a good person, and this time he can bring 10 million taels of silver to the courtyard, and he can be considered as a registered disciple afterwards. ”

Vice Dean Qingfeng looked at Zhixuan, who was seriously engraved with the divine pattern, and the appreciation in his eyes was quite strong.

Well, it's a talent.

Lin Yu's technique is not jerky, and in his previous life, he was very familiar with the method of making black powder, grinding saltpeter, charcoal and sulfur into powder.

The ratio is the same amount of charcoal and sulfur, each accounting for one and a half, and then seventy percent of saltpeter.

15:15:70。

When the ratio of black powder was completed, the dark clouds in the nine heavens rolled more and more violently, and lightning flashed and thundered.

Even several lightning bolts struck directly above the main hall.

If it weren't for the amazing defensive power of the defense array and the Xuanshi, this lightning would have killed Lin Yu.

"Jinnyima is scary, no matter what, one road to the dark. ”

Lin Yu's legs were weak from the thunder outside the hall, and he knew ...... This thunder and lightning is definitely coming at him.

Regardless of his three-seven-twenty-one, Lin Yu continues to develop, and if he wants to do it, he dares to do it.

So Lin Yu increased the proportion of black powder, and he wanted to blow up the sky......

The black powder was granulated with egg whites, and the black powder of what size was screened out, and all of them were packed into the iron cans the size of two fists.

At the same time, those sharp pieces of broken iron are also filled in, with the aim of increasing the lethality.

A thin bamboo tube is inserted into the middle of the mouth of the tin can, a yin line is drawn out, and the tin can is sealed with soil and fish glue......

Succeed with flying colors!

Thundered!

Quack!

Whining!

The dark clouds between heaven and earth rolled, lightning and thunder, and the wind howled, constantly slapping the main hall of the Tiangong Academy.

The combined power of heaven and earth couldn't help but frighten the six hall masters, and even ...... Hongwen Tianzi, who was only a few months away from breaking through the realm and crossing the tribulation, was soaked in cold sweat on his back.

Tineema is scary.

Swift wind and lightning like a talisman.

"Haha, the third-level Divine Pattern Level Embroidered Spring Knife, the heavens and the earth are all for me, and I have succeeded......"

Jie Zhixuan, a person from Tiangong Academy, suddenly laughed wildly, put down the bronze pen, picked up the embroidered spring knife in his hand, and poured his talent.

The sword emerges.

Suddenly, a majestic wave of talent qi opened up, and everyone could feel the sharpness and Dao intent of this knife.

"Well, he is worthy of being the first person to know words. ”

The six hall masters stood up excitedly, their eyes were full of appreciation for Zhixuan, and even the Hongwen Heavenly Son had to admit that Zhixuan was indeed the pride of the sky.

"It's not bad, it's fast......"

Lin Yu bit a bamboo pipe in his mouth, staring at Zhixuan with a smile, and when he saw the embroidered spring knife in Zhixuan's hand, he couldn't help but nod and said: "This knife is much more powerful than the elite knife of Wushuangwei......"

"Haha, that's nature, this is a third-level heavenly craftsman, and it can only be forged, but my second-level celestial craftsman, but I can succeed, this is the strength and talent ......"

Zhixuan laughed proudly, and then looked at Lin Yu with a sneer: "What, you just ate enough?"

"I'm Nima ......"

Lin Yu immediately grabbed the grenade on the table, and planned to use the fire fold to ignite the fuse and throw it over.

"Now that it's done, it's time to try the power to see if it's your embroidered spring knife or your Highness's hand...... The earth-shattering thunder is powerful. ”

Lin Yu felt that the grenade was not domineering enough, so he hurriedly took the name of Heaven-shattering Thunder temporarily.

Very domineering, I like it very much.

"Heaven-shaking thunder, haha, just that iron bump? Vice Dean, please open the test ground, and the six hall masters will rule on the power. ”

Zhixuan couldn't wait to humiliate Lin Yu fiercely, and hurriedly asked the vice president to open the test ground.

"Good!"

Vice Dean Qingfeng was also a little excited, whether the third-level Divine Pattern Embroidered Spring Knife forged by the second-level Heavenly Engineer could show the corresponding power.

Meantime...... He also took a good look at the iron bump of the crown prince Lin Yu and what kind of changes it could bring.

There is no fluctuation of talent, it is simply ...... Joke!

Poof!

Qingfeng didn't hold back for a while, and suddenly laughed, so he coughed lightly twice to resolve the embarrassment.

At the same time, he pinched the seal with both hands, and his talent shot directly into several places in the main hall.

Click!

Suddenly, the sound of mechanical transmission came from the hall, and suddenly, the floor under Lin Yu's feet suddenly moved.

The place where he and Zhixuan stood turned into a separate small platform.

However, the originally empty hall showed a huge deep pit, on which there were countless sword marks and knife marks, like traces cut by talent, which was shocking.

"His Royal Highness the Crown Prince will try first, or will I come first?"

Zhixuan couldn't wait to show it, and he wanted to take the opportunity to show his face this time.

After all, defeating the name of His Royal Highness the Crown Prince of Great Xia can allow him to blow in the Tiangong Academy for several years in the future.

"It's better for you to come first, Your Highness is worried that my earth-shattering thunder will go down, and you won't even have a place to test......"

Lin Yu smiled confidently, and didn't take Zhixuan's third-level Divine Pattern Embroidered Spring Knife in his eyes at all.

Talent is talent after all, just like a compressed air cannon.

But his earth-shattering thunder is an existence that makes you worry when you see a ghost......

PS: Chapter 4, there is another chapter, it's going to be early in the morning...... If you can't wait, let's go to bed first......

(End of chapter)