The rest did not last long, and the tired men fell asleep on the grass. The pen "Fun" Pavilion www.biquge.info Rong Bai chewed a grass stalk in his mouth and gave them a whistle. The three children seemed to be frightened, and they didn't dare to sleep at all, staring left and right for a while before slowly moving to Rong Bai's side.

"Why don't you sleep? If you don't have the physical strength, you will have to walk a long way and you will not be able to keep up with the large army, so you will be left in the mountains. Rong Bai glanced at them and turned his head again.

The youngest child, who was about the same age as the boys adopted by Rong Bai, was timid, but hugged Rong Bai's thigh: "Sister, I don't dare to sleep." ”

Rong Bai who was hugged by the leg: ......

What can I do if you don't dare to sleep! Rong Bai was speechless, in the last days, if you have to sleep alone, just knock you out. However, these three soft and tender children, what if Rong Bai starts and breaks the bones! Rong Bai raised his head and thought about what he would do if he was Hengqing! Can't sleep? Then study!

As long as Hengqing reads, Rong Bai can't help but doze off.

But what to read? Rong Bai thought bitterly for a while, and then remembered the content he had memorized masochistically for the exam before the end of the world: "Hydrogen, helium, lithium, beryllium, boron, carbon, nitrogen, oxyfluorine, neon, sodium, magnesium, aluminum, silicon, phosphorus, sulfur, chloride, argon, potassium, calcium, ......" At this time, not only the three children were confused, but even Chang Ruicheng, who had just been woken up, also collapsed.

These well-rhyming words are placed in front of him one by one, and he can understand them, but what the hell are these connected together! Lightly harming Lippipin? Minor injury, the skin inside will be puffy? I can't explain it!

"Instructor Rong, what are you carrying?" Chang Ruicheng asked in a trembling voice.

Before he joined the army, he also participated in the imperial examination and took the exam. Although he is not full of poetry books, he has read a lot of books, and the existence of these five words together, he has indeed never seen anything similar in any literature.

"Periodic table of chemical elements!" Rong Bai was quite speechless.

The books of this era, Rong Bai can't read them, let alone memorize them. In the last days, there was nothing that could be passed on by word of mouth, but many illustrations. On this big night, the moonlight is not bright, Rong Bai is talking to the children about what illustrations, it is estimated that the children can't understand it, it is better to endorse it. What Rong Bai can memorize is in the top thirty of the periodic table.

Chang Ruicheng said that he heard another word that he didn't understand at all. Periodic table of chemical elements? What's that? He's never heard of it, it's a teacher's table, a statement of feelings, or something.

"What's that? Who wrote it? Chang Ruicheng couldn't help but ask.

As a former scholar, Chang Ruicheng is still very interested in these words, and if he can't understand things he hasn't heard, he must find a way to figure them out.

However, this question completely stumped Rong Bai. The periodic table, who made it, you ask Rong Bai, who does Rong Bai ask? Anyway, when she was born, this thing was common sense that everyone knew. Besides, the discoverer of each element is different, and who knows who sorted out the periodic table!

"I don't know who sorted it out." Rong Bai told the truth.

"And what is this periodic table of chemical elements used for?" Chang Ruicheng asked again. Since ancient times, the existence of various tables has been a matter of heaven, and this periodic table of chemical elements is at least a very useful thing.

"Introducing chemical elements." Rong Bai replied.

The periodic table of chemical elements, the method of memorization is different, you can back horizontally or vertically, diagonally back, and it is not for nothing that you can memorize it in a mess. Rong Bai memorized this thing at the beginning, but Xiao Heng helped find a simple way, and only memorized thirty of them. However, it is indeed very useful, and the large-scale and lethal weapons in the base are all chemical weapons. It is said that they are all based on the periodic table of chemical elements. It's biological weapons, and there are many, all of which take into account the periodic table of chemical elements.

No one uses nuclear weapons in the last days, after all, once nuclear weapons come out, they will not be much better off if they kill each other. I heard that before the end of the world, nuclear weapons were the most powerful weapons, and the performance of the elements was also speculated from the periodic table.

Chang Ruicheng said that he didn't want to ask next. Because, after asking for a long time, he still hasn't asked the content from the question. This instructor's answer has no meaning at all, he mentions chemical elements with his mouth closed, who is the cycle?

Rong Bai lowered his head, and the three children looked at themselves with flashing eyes, obviously, the periodic table of chemical elements on his back was dizzy, and the other party was not only not dizzy, but more interested. Do you want to sleep? Rong Bai, who was speechless, could only hand over the difficult task of coaxing the child to sleep to Chang Ruicheng.

Chang Ruicheng: ......

In the night, a ballad slowly sounded. Chang Ruicheng's voice is not difficult to hear, and when he sings, his voice is even rougher, as if he is on the grassland. The three children, nestled next to Chang Ruicheng, slowly fell asleep.

It turns out that singing can make people sleep. Rong Bai said that he had increased his knowledge. Turn your head and think about it, what song will you sing? "Unity is Strength" is considered a song, but this kind of singing makes people full of energy every minute!

After the children fell asleep, Rong Bai didn't sleep yet, and came to Chang Ruicheng's side: "What song are you singing to put the children to sleep?" It's so nice. "It's very reassuring to hear and I want to sleep. In the last days, there was no such song, and the place where it could be sung was either a barracks or a discotheque.

The military song of the barracks, as soon as it is sung, let alone sleeping, even if it collapses on the ground, it can be sung and jumped. As for the disco song, hehe, I can sing it to you when I fall asleep.

"It's not a ballad, it's a song, and I can sing it once I have a tune." No matter what kind of words and such a tune, it can calm people's minds. The children are scared, calm down, and fall asleep.

That's amazing!

Rong Bai's eyes widened. But after thinking about it, I kept thinking that what this man said made sense. I remember that I have a little friend who has been very funny since he was a child, and he likes to change the original lyrics into a mess, and it sounds very interesting.

It seems that this Chang Ruicheng is also an expert in this area.

"Can you teach me how many songs to sing?" Rong Bai suddenly asked.

Rong Bai never thought that singing could have such an effect. When Rong Bai first came to this world, he was very insecure. Often at the slightest movement, I open my eyes for most of the night.

If I had known about such a song earlier, I would have been much better off if I had sung one more song to myself.

"Okay, I'll teach you." Chang Ruicheng replied very boldly. For a long time in the future, Chang Ruicheng was constantly reflecting on himself, why did he agree to her so boldly at that time!