In August, yellow leaves are everywhere, and the moon is golden.

It's been many days since the last time I fought with the two of the mysterious organization of Somen and Mukoni. During this time, Richard has been repairing internal injuries in his body, recuperating in his physical condition, and researching various contents in the main laboratory, while suffering from "disturbances" that he has never experienced before.

The disturbance does not come from a sleepless Pandora, but from ......

Main laboratory, laboratory.

In the afternoon, the soft autumn sun shines in and is bright.

Richard sat at the lab table and looked at the contents of the papyrus scroll, thinking as he subconsciously tapped on the table.

"Click, click, click, click......, click

The sound of Richard striking is a melody that has been echoing in his mind for many days, commonly known as earworms.

Earworms are not a strange thing, and according to modern studies on Earth, almost everyone has the experience of a certain fragment of a song or other musical composition involuntarily echoing in the ear repeatedly.

From a scientific point of view, the "earworm" does not actually appear in the ear, but in the brain, which is a purely cerebral neural activity. When the phenomenon of "earworms" occurs, the auditory cortex in the brain, which is responsible for the processing of auditory information, becomes active and behaves as if it were listening to music, making it feel as if music is actually ringing in the ears.

There are many ways to do this, one is related to "the brain has set a password for music in a lot of ways", another is related to "involuntary memory retrieval", and some are related to "information is stored in the brain according to the relevance of the information", and so on.

In fact, if a person is under a lot of stress, or in a particular mental state, the probability of developing "earworms" increases.

And if you explore the root cause of Richard's "ear worm", it is worth pondering, because the reason why Richard has "earworm" is precisely because of the words deciphered from the books of the Black Spirit Empire - Ke Guo Li Linggu, Du Lier Mengwu.

Kegori Lingu, Duriel Mengwu.

It seems that this is just an ordinary sentence, but since many days ago, when Richard completely deciphered this sentence from the books of the Black Spirit Empire, an indescribable "cognitive itch" and strange melodies appeared in his brain, and finally developed into an "earworm".

Although there is not much harm to the "ear worm", Richard is still a little miserable after being entangled for so many days. Richard also knew that the best solution to something like "earworm" was to let it be, otherwise the more you resist, the more difficult it would be to get rid of it.

Richard withdrew his gaze from the papyrus scroll, stopped tapping his fingers on the table, and exhaled lightly, wondering how long the "ear worm" would last, and he didn't know what the phrase "Ke Li Lingu, Du Lier Mengwu" in the books of the Black Spirit Empire represented.

Thinking of this, Richard felt a gaze on him, and subconsciously turned his head to look, and saw Pandora sitting on the bed secretly looking up. Seeing him turn his head, Pandora withdrew her gaze in a bit of a panic, lowered her head and played with her fingers seriously.

Richard turned his head, and immediately Pandora looked up again.

Richard turned his head, and Pandora lowered his head again.

Richard turned his head again, and Pandora looked up for a third time.

Feeling the gaze, Richard exhaled again, knowing that Pandora was purely boring, which was also the disadvantage of Pandora after getting rid of her deep sleep: when she slept before, she naturally didn't have to do anything, and now she doesn't sleep, she has nothing to do every day, and if she stays for a long time, she will naturally be bored.

Richard thought about it, turned his head to look at Pandora, Pandora quickly lowered his head, and after waiting for a long time, he couldn't help but raise his head, just in time to meet Richard's unmoved gaze.

Pandora's eyes blinked, widening as if annoyed, unhappy that Richard had broken the rules of the game of "whoever is seen first is the puppy". But after half a while, Pandora spoke up, "Richard, I'...... I want to learn something from you. ”

"Huh?"

"I don't want to sit in bed and play by myself all the time, I want to ...... Do you a favor and do something for you. Pandora said with a serious face, as if she had thought deeply.

Richard listened to Pandora's words, his eyebrows moved, he didn't refuse, and said, "Okay." ”

"Smack!"

When Pandora heard this, she immediately jumped out of bed, ran briskly to Richard with her bare feet, and asked, "Then what do I do?"

"Hmm...... Let's start with the simplest. "For example...... Brush the tube. ”

"Brush the test tube?"

"Well, brush the tube, do you brush it?"

"I ...... I don't know. Pandora shook her head, "But I can try." ”

"Alright, follow me. Richard said, leading Pandora to the side, to the corner of the main laboratory, and stopped in front of a basin of used test tubes.

Bringing the bucket of clean water, the bucket of waste liquid, the rack of test tubes, and the brush, Richard showed Pandora the process of brushing the test tubes.

"The first step is to pour out the waste liquid in the test tube, then inject the water into the half test tube, pour out the water after shaking, then inject water, and pour it out again after shaking, so wash it three times in a row. ”

"If, after washing three times, there is still something dirty in the tube, then use a tube brush to brush it off. When brushing, you should rotate it up and down, left and right, but not too hard, otherwise it will damage the test tube. ”

"After brushing with a test tube, it is washed three times with water vibration, and finally the water is removed, and the standard is that the water attached to the inner wall does not gather into droplets, nor does it flow down in strands. ”

"When it's all done, you can put the test tubes on this test tube rack, understand?"

Richard washed a test tube, placed it on the test tube rack on the table, looked at Pandora and asked.

Pandora's eyes widened and her lips opened: "Forehead...... Bright...... Understand ......"

"Understand, you can give it a try. Richard said, shoving a test tube and tube brush into Pandora's hand.

Pandora looked at the test tube first, then at the test tube brush, tilted her head and seriously recalled Richard's steps just now, and started to move.

First, pour out the residual liquid in the test tube, and then pour in clean water and shake.

As a result, Pandora had just poured the water into the half of the test tube, and shook it vigorously like Richard, and with a "click", the slender, pitiful test tube shattered in his hand.

Pandora was stunned, looked up at Richard, full of innocence: "This...... This one...... I didn't mean to......"

"It's fine. Richard was very "good at understanding the dragon's will" and said loudly, "It's normal for the test tube to be broken, as long as you don't hurt yourself, let's continue." ”

After speaking, Richard helped Pandora collect the glass shards of the test tube and throw them away, and put a new one in Pandora's hands.

Pandora results tube, repeat: pour out the liquid, add water, shake ......

"Whoa!"

The second tube shattered again.

Pandora's big innocent eyes glared again: "This ...... This one...... It really wasn't my intention......"

"I know. Richard said calmly and put the third test tube in Pandora's hand, "I know you didn't mean to, just notice it this time, and make sure you don't shake it too hard......"

Before Richard could finish speaking, there was a "bang", and a familiar voice sounded again from Pandora's palm—this had not yet begun to be washed!

Pandora muttered quietly, "I ...... Too nervous......"

"Whew, it's okay......" Richard was expressionless and picked up the fourth test tube, "There are still many test tubes, we still have many opportunities"

Pandora nodded vigorously, "Yes." ”

And then......

"Whoa!"

"Whoa!"

"Whoa!"

Fifth, Sixth, Seventh......

......