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Under Fang Ruitao's stunned gaze, those floating swim bladders in the air fell one after another, and finally piled up at Fang Ruitao's feet. Pen, fun, pavilion www. biquge。 info"No, what kind of trick is this, it looks like a telekinesis." Fang Ruitao asked in surprise.

"It's a matter manipulation technique, but this high-level talent is too difficult for my current body, and I wouldn't have used it if it hadn't stinked from that garbage heap. Now that you're satisfied, I'll go back to sleep. After speaking, Best entered Fang Ruitao's space in a flash, and after throwing a third-order demon core into his mouth and chewing it, he quickly fell asleep.

"The cost of this guy is so high every time he comes out to work. Fang Ruitao used a bag to pack a large pile of fish bladders and walked towards the back mountain. After finding a backlit place, Fang Ruitao set up a pyre, asked the micro factory to prepare a large iron pot for him, and threw all the washed swim bladders into the pot and boiled them over high heat.

After an hour of boiling, a large pot of water and fish maw has turned into a viscous object as transparent as gelatin, and Fang Ruitao tried it and the viscosity was still very high. Nodding, Fang Ruitao extinguished the bonfire, put the iron pot into the space, and quickly left here.

Back in the dormitory room, the big iron pot and the glue inside were already cold, he scraped the glue in the pot with a piece of wood, and neatly glued the wooden planks with a silent array to the wall, this kind of work was not difficult for Fang Ruitao, and he was all glued in just half an hour. Then Fang Ruitao used a wooden board carved with a solid array to paste it on the top of the wooden board of the silent array, and by the time all the work was done, most of the night had passed. With a long sigh of relief, the room was now completely soundproofed and at the same time very sturdy.

After making all the preparations, Fang Ruitao put those things on the table again. He first divided the nitric acid into two parts, one of which soaked a large amount of cotton and the other into a large beaker. Putting aside the nitric acid that soaked the cotton, Fang Ruitao took out a glass rod and began to stir the nitric acid in the beaker while dripping the glycerin into the beaker drop by drop.

When glycerin meets nitric acid, a large amount of heat energy will be generated, what Fang Ruitao has to do is to stir the glass rod to try to quickly lose heat, and at the same time, the speed of dripping glycerin with the other hand should not be too fast. Although it was the first time to do this kind of thing, with Fang Ruitao's powerful mental detection ability, the danger was still extremely low. When the dripping glycerin could no longer be dissolved in nitric acid, Fang Ruitao stopped, and nearly two hours had passed at this time.

What Fang Rui made is an extremely dangerous nitroglycerin**, which is very easy to explode when it is in liquid form, as long as it is overheated or slightly shaken, it will explode, which is very unsafe, so the next thing Fang Rui has to do is to solidify it.

Seeing that the sky was already white, Fang Ruitao sped up his progress. Cotton soaked in nitric acid has been converted into pure nitrocellulose, and Fang Ruitao puts most of the semi-nitrocellulose along with anhydrous alcohol and freshly made nitroglycerin into a micro-factory, where they are mixed together and then coheated under high pressure to make a gelatinous **.

Fang Ruitao didn't need to worry about the work of the micro factory, he could free up his hands to do other things. He reacted mercury with nitric acid, first produced mercury nitrate, and then reacted it with alcohol, and it was easy to produce a gray powder, which is the very famous mercury.

There is a mechanical processing factory, and all kinds of steel products can be made, but this time Fang Ruitao did not use steel, but used brittle and easily crumbling cast iron. The oval shell made of cast iron is easier to break and can give full play to the power of **, and in order to increase the number of fragments, he also has the micro-factory carve deep grooves into the surface of the oval shell. The first grenade on the Celestial Continent was successfully crafted by making a detonator and then mounting it on a cast-iron shell filled with gelatinous **.

Fang Ruitao kept busy with his hands, and quickly made ten grenades, just in case, he also made two increased anti-tank grenades, this guy's explosive power is almost four times that of ordinary grenades.

There was a loud "boom" that shook the glass of the classroom, and all the students who were in class were attracted to it. Liao Yongfei and Zhao Qifeng were the strongest, they rushed to the playground first, and looked at the back mountain where the loud noise came, their brows furrowed. "Brother Zhao, do you know what's wrong?" Liao Yongfei was holding chalk and a book in his hand, apparently he ran out during class.

Zhao Qifeng looked at the cloud of smoke and dust rising in the distance and shook his head and said, "I don't know what's going on, let's go over and take a look, it's not close." ”

Liao Yongfei nodded, he first gathered two light wings behind him, and then the two light wings shook slightly, and the whole person flew out in an instant. Zhao Qifeng is also a battle qi wing, this is a skill that can only be used at the level of the war emperor or above, and soon a few people behind them condensed the light wings and flew in that direction first, but their light wings were more blurry, obviously they were not like Zhao Qifeng and the two were at the level of the sage, they were just the war emperor.

Several people flew quickly in the air with their light wings, and soon came to the place where the smoke and dust were angry, and to their surprise, the original large forest was gone, replaced by a huge earth pit with a diameter of more than ten meters, and its depth was about three meters.

"The power is not small, at least it is the damage that can only be caused by the full force of the third-order demonic beast of the fire system, and it is also the type of fire attribute that is more inclined to explosion. Liao Yongfei looked at the big pit and said with some surprise.

Zhao Qifeng nodded: "Yes, but if there is a demonic beast within the scope of the academy, we should be able to sense it." And it is estimated that there are no such boring people among the teachers who run here to destroy, and there are no people with this strength among the students. ”

Several other War Emperor-level mentors also rushed over at this time, and they were also surprised when they saw this big pit, and several people gathered around the pit to discuss for a long time without any result. "Huh, what is this?" Liao Yongfei picked up a piece of broken cast iron from the edge of the pit, and it looked like it should have collapsed from a whole object.

Zhao Qifeng checked it, but he couldn't see what it was, and after scanning it for a week, he had to say: "Let's go back and study this thing, the academy has strengthened its vigilance recently, and don't let any demonic beasts burst in and hurt students." Several War Emperors nodded, and then they flew back to the academy here.

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