Ke Xingyun, a prominent figure at the National University of Singapore, has recently become more famous.

It seems that people all over the world know the following three things:

First, his Ke Xingyun's hacking skills were not at home and he was arrested.

Second, he Ke Xingyun promised to help his girlfriend buy a ticket for the Blue Sea Whale Riding Tour but didn't buy a ticket, and he was going to be single again.

Third, Qi Xu Yafei, one of the three campus goddesses, will soon belong to all of us! The vast number of single male compatriots, a beautiful spring has arrived!

Ke Xingyun is really distressed, not because his hacking skills are not at home......

Well, there's a little bit of that for that reason.

What's more, he felt that he might really lose Qi Xu Yafei.

Because Qi Xu Yafei was so angry that he didn't talk to him all day after knowing that he actually tried to use hackers to get tickets for himself.

And, depending on the situation, the Cold War will continue.

But in this world, there is often no end to the road, and before he is about to completely despair, a new hope arrives.

"Blue Sea Whale Ride" actually released tickets again!

Moreover, Gu Xiaobai let out a word, everyone can buy as much as they can sell!

Sing as many as you can!

After hearing the news, Ke Xingyun felt ...... I'm alive again!

There is hope for my life again!

And even better......

The next day, it happened to be Yafei's birthday!

This is probably the destiny of the underworld.

God also wants people to accompany Qi Xu Yafei to have a romantic birthday!

Then Ke Xingyun began to think about it.

Will Xiaobai sing a birthday song for Yafei at the concert?

Will you invite yourself and Yafei to the stage?

Oops, what a bliss, so blissful!

Just thinking about it, Ke Xingyun felt that he was about to melt with joy.

Before that, though, he's going to have to buy a ticket!

He called Qi Xu Yafei, but Qi Xu Yafei refused.

But he was not discouraged, but sent a message to Qi Xu Yafei: "Yafei, look at my performance, I will definitely grab you a ticket for your birthday! If you don't grab it, I will jump off the roof of the experimental building!"

Anyway, if Qi Xu Yafei left him, he wouldn't want to live anymore......

Ke Xingyun, who gave Qi Xu Yafei a military order, came to the laboratory before eight o'clock in the evening.

"Tonight, I'm going to use the direct connection network of the laboratory to help Yafei grab tickets, whether I can be happy in the second half of my life, whether the ancestral infectious chromobody of our Ke family's nine generations can be passed on depends on your performance! When the time comes, you must not occupy my bandwidth! This is my life's request, if any of you rob my broadband and I can't grab a ticket, don't blame me for drawing a circle and cursing you!"

Everyone felt a desperate man who was about to return to the ranks of single dogs, and the deep fear and resentment all nodded obediently.

"Well, I didn't experiment tonight. ”

"I can do without experiments tonight. ”

"I must have no experiments tonight!"

Everyone left quickly, for fear that once there was a little fluctuation in the network, they would become sinners for the ages.

However, there was a junior brother who didn't run fast enough and was caught by Ke Xingyun: "Xiao Chen, if you stay here tonight, just help me keep an eye on the switch, and tell me if the indicator light is abnormal anywhere, understand?"

"Can I tell I don't understand?"

"No way!"

"Good...... Well......"

Xiao Chen, the younger brother, gave in.

Then he timidly asked, "Senior, what if there is a temporary power outage at that time?"

"Even if you want to pee to generate electricity, you can get me the electricity back, understand?!"

"Ming...... Got it......"

Xiao Chen felt that his life was so miserable.

And what solution do I need to use urine to generate electricity? Shouldn't I configure it now......

This time, the tickets were still released in the early hours of the morning.

I don't know how many people are silently waiting for the time to come.

At 23:42, the network suddenly stuck.

"What's going on?" Ke Xingyun asked.

"It's the teacher who occupies the broadband, and he's probably doing simulation experiments and interacting with supercomputers for data......"

Ke Xingyun was a little crazy.

His teacher is a leading boss in the industry.

At this time, I was still experimenting, so maybe it was important.

But......

"Senior, what should we do?" Seeing that the time was approaching the wee hours of the morning, the junior brother looked innocent and dazed.

"At 58 minutes, if the teacher's interaction is not over, you ...... You're going to unplug his cable!"

Huh?

The junior brother felt that Ke Xingyun must be crazy.

But Ke Xingyun is not crazy!

Academics or something, where love is important!

Mentor or something, where is it important to have a girlfriend!

I'm just being a smart creature with responsibility, the right choice!

Any sane creature would choose so!

"Senior, I don't dare!"

"If you don't do it, I'll pour this cup of sulfuric acid on your face!"

"Senior, that's a glass of pure water!"

"But until I splash it in your face, you can't be sure if it's really ingredient, for us chemistry students, any cup of unknown reagent is full of uncertainty and danger, and it can be extremely dangerous!"

It really makes sense.

"I understand, senior!" The junior brother looked at the cup of "Schrödinger's sulfuric acid" and showed a look of horror: "Teacher, the seniors forced me, I shouldn't have done this!"

"That's right, that's the expression when the time comes!"

"What expression?" said a voice from behind Ke Xingyun.

Ke Xingyun froze.

Then he heard his mentor say: "I promised to help my daughter grab tickets tonight, and got a ticket-grabbing software, and now I am desperately refreshing it in the background, and you must not affect me to grab tickets later, otherwise I will ...... I'm going to pour this cup of sulfuric acid on you!"

"Teacher, that's a glass of pure water!"

"Nonsense, you can't prove it's not sulfuric acid until it hits your face!"

"Teacher, your ticket-grabbing software is so stupid, even if you try to refresh it, you may not be able to grab the ticket......"

"Heh, it's better than someone who gets caught because of his lack of skills!"

"Teacher, it's irresponsible for you to say that......"

"Huh, where is it irresponsible?"

Seeing that the two of them were arguing, the junior brother next to him suddenly shouted: "It's early in the morning!"

In an instant, the laboratory was in chaos.

"Unplug the cord!"

"I see who dares!

"Grab the ticket!"

"Hurry, hurry, hurry!"

"Ahhhhh

"Damn it! look at the sulfuric acid!"

"Splash on the computer! Towel! Towel!"

"Click".

The lab lost power and tripped.

In the dark, the younger brother struggled to recall.

If you use urine to generate electricity, what reagent should you use?