Gu Yun glanced at the wall clock and saw that it was still early before the start of class, so he turned his head to look at Feng Shao, "I'll go out for a while." ”

Feng Shao raised his eyes to look at Gu Yun's back, his inky black eyes were like washed obsidian.

Feng Shao always felt that Gu Yun had changed too much in the past few days.

It's just that it's always a good thing.

He likes the current Gu Yun.

At this time, Gu Yun walked out of the classroom and went up the stairs along the corridor.

Because there is a music room upstairs, there are hardly any students coming up on weekdays.

Gu Yun glanced left and right and looked around, and then took out his mobile phone and dialed a series of familiar numbers in his memory.

God's mercy, the phone number of the scientific research institute has not changed for 20 years.

Gu Yun got through.

"Hey......" A slightly immature and slightly cool voice crashed into Gu Yun's eardrum through the microphone.

It made Gu Wan feel goosebumps all over his body for a moment.

'Mascot! ’

- 12-year-old Gu Yun!

"Hey, hello, this is a research institute." Xiao Gu Yun's voice had already brought out a little impatience.

And just when Xiao Gu Wan was about to hang up the phone, the other side of the phone suddenly spoke.

"Hey, are you Gu Yun?"

Xiao Gu Wan couldn't help but be stunned, and subconsciously glanced at the caller ID of the landline - hey, looking for her?

How can it be?

This phone number is an internal phone number of the research institute, and she didn't say anything to anyone.

"Who are you?"

"This is a call from 20 years later, I am you 20 years later, I ......"

"Doodoo ......"

Gu Yun: ???

Do I rub?

Children are so rebellious?

I hung up without even listening to it?

Gu Wan pursed her thin crimson lips and dialed it back, and the phone was quickly connected.

"Xiao Gu Yun, I mean really, I'm really you in 20 years, I ......"

"Doodoo ......"

Gu Yun: ???

Stumble!

I knew it was going to be like this!

This damn girl......

Tui, you can't scold yourself!

This clever and cute little girl, she knew that she would definitely not believe it.

Gu Yun felt that if he told Xiao Gu Yun about this again, he was afraid that he would be blocked next.

Gu Wan couldn't help but take a deep breath, and after calming down, he dialed back again.

This time, the phone rang five or six times before it was answered.

Before Xiao Gu Yun finished speaking, Gu Yun had already rushed to say, "Today's research experiment, add 0.02g less hydrofluoric acid base, it will ...... explode."

20 years ago today, it was the first time that Xiao Gu Yun participated in the experiment of the department.

However, because of the addition of 0.02g of hydrofluoric acid group, it caused an explosion.

Although it didn't hurt anyone, it blew up the lab in a mess.

For this reason, Xiao Gu Yun was sent to compile textbooks again, and did not return to the laboratory until more than half a year.

And this is why Gu Yun chose to call Xiao Gu Yun today.

The main thing is that it's too humiliating!

Because of this incident, she, a little genius, was 'loved' by her colleagues in the scientific research institute for a long time.

Xiao Gu Wan was stunned for a moment, then frowned, "How do you know that I will be on the experimental table today?" ”

INTERVIEWER Do you have a lot of question marks, kids?

Gu Yun pouted - nonsense, that's how I came all the way, can I not know?

"Then let me ask you, what is the amount of hydrofluoric acid in today's experiment?"

“0.13g。” Xiao Gu Wan blurted out without thinking.

"Wrong, it's 0.11g."

"Impossible." Xiao Gu Wan subconsciously shook her head.

"The textbook you read last night was pirated and misprinted." Gu Wan said slowly.

"You ......"

"Call me when you figure it out."

Doodoo ......

This time it was Gu Yun who hung up the phone.