"Well, students remember, deuterium is a stable form of radioactive isotope of hydrogen, and at room temperature, deuterium is a colorless, odorless, non-toxic and harmless flammable gas. However, there are very small things in nature, which can only be made by special reactions, and the state has discovered from the study of this gas, which can create the terrifying Nine Rank Mysterious Machine. Teacher Sun is holding a book and explaining this rare gas to the students. Fei Ming was shocked as he listened, because the researchers of the Divine Soul Heavenly Sect had also proposed this ingredient, and they had also said that it was the cheapest and easiest element to obtain.

Deuterium can be extracted from ordinary water, the earliest use of electrolysis, heavy water is less difficult to electrolyze than ordinary water, so when electrolyzing water, heavy water will be concentrated in the residual liquid, repeated electrolysis concentration, you can get enough purity of heavy water, or use the subtle difference of boiling point, repeatedly distilled water or liquid hydrogen, to obtain heavy water or deuterium gas, consume less energy. The energy released by these gases through special channels is comparable to that of some Holy Realm masters, and Fei Ming's teacher, Dr. Shi Xing, also mentioned to him that the internal structure of the Doomsday Dragon Egg requires a Nine-Rank Concentrated Energy Mysterious Weapon Bullet to be wrapped in the outer body of the deuterium, and the Nine-Rank Concentrated Energy Mysterious Weapon Bullet is just a "trigger" that heats the wrapped fuel to tens of millions of degrees at the moment of its explosion, causing it to undergo a special reaction and release powerful energy in an instant.

Fei Ming, who had read this design drawing, of course knew that if the Divine Soul Heavenly Sect made this thing, it would only take five to destroy the entire Rixuan Empire, and the raw materials needed for the Doomsday Dragon Egg were also quite easy to get, and what needed to be studied now was how strong the Nine Rank Mysterious Weapon should be put in this cannonball, and how much fuel should be put into it, and what other rare metals or gases could also be used to create such a powerful Mysterious Weapon Bullet. At the moment when Fei Ming was thinking wildly, the bell rang for the end of class.

"Alright, that's all for today's class, end of class!" After Mr. Sun finished speaking, he picked up the lesson plan and walked out of the classroom, the students also left the classroom with a sigh of breath and stretched their muscles, and Fei Ming was also about to leave the classroom, when suddenly a pair of hands pressed on his shoulders, and he didn't even have to guess who it was.

"Ahh He Lingxue pressed her hands on Fei Ming's shoulders and said coquettishly.

"Yes, my eldest lady." Fei Ming disarmed and surrendered again, letting her drag herself back to the girls' dormitory, anyway, Ning Qingxi and herself didn't have to say goodbye all the way. He Lingxue originally dragged Fei Ming away, but she was a little lazy, she didn't take a few steps and lay on Fei Ming's back, asking him to carry herself back to the dormitory, Fei Ming didn't say anything and let her play small.

"Jingjing, your shoulders are quite broad, and your feet are a little big, why do you still smell of cologne, right?" He Lingxue pretended to be unfathomable and pinched her chin. Fei Ming was a little weak-hearted, he was afraid that he would be in trouble if he wore a goof.

"I know, you're actually a student arson on the outside, but you're actually a big man on the inside, I'm right!" He Lingxue suddenly jumped excitedly, and Fei Ming only felt that his back was turbulent and he couldn't tie his heart. He pretended: "When did I get the nickname of arson student girl?" “

"You don't know, just after you finished two competitions, many classmates said that you were full of firepower, so they gave you this nickname. Don't you know that those boys say that you are an active volcano, but I heard that Senior Lu Ye is said to have turned against his brother in order to have a relationship with you, and the most outrageous thing is that you have rolled over the sheets with Lu Feng, and you tell me whether this is true or false. He Lingxue asked eagerly.

"Of course not!" Fei Ming replied hurriedly, thinking: I didn't expect that this was just a trivial matter that was getting more and more outrageous in the student world.

"It's good if you don't, in fact, the two brothers Lu Ye and Lu Feng are actually good, if you choose any of them, it's good." He Lingxue said with a peach blossom on her face. Fei Ming couldn't help but feel a little chilly, so he asked, "Then has your candidate for Prince Charming been decided?" “

Hearing this, He Lingxue couldn't help but be silent, she said lightly: "Actually, I still envy you, don't think that our children from famous families will be much better, you can fall in love freely and pursue your own ideals, but I am just a victim of the interests of the family, and I have not lived my own life in the family." ”

Fei Ming's expression also darkened when he heard this, and the next moment he said: "Ling Xue, if you don't want to be manipulated by others, then you have to learn to manipulate other people's lives, you must learn that you must be strong." “

"Thank you." He Lingxue nodded as if she didn't understand. After a while, they returned to the dormitory, and the scene in the dormitory couldn't help but shock Fei Ming again. Fei Ming swallowed a mouthful of saliva and said:

"Fairy, I know why you're pulling me back to the dorm." But no, Fei Ming just didn't go back to the dormitory for three days, and their dormitory has now become a garbage factory, and now there is no place to put his feet.

"I don't want to, who told me that I didn't learn how to clean." He Lingxue blushed and pouted, pulled Fei Ming's arm and rubbed it and said.

"I've been defeated by you, so stand back." Fei Ming reluctantly left He Lingxue's body, and after seeing He Lingxue exit the dormitory, he finally found cleaning supplies from the garbage heap, there was not only garbage here, but also a lot of unwashed clothes, it seemed that He Lingxue would not wash clothes, Fei Ming patted his head again and hurriedly cleaned up.