Original subtitles

This recording was submitted to the city police bureau by an anonymous informant.

Because it involves a current police officer,

that's why my boss sent me here to investigate,

in order to find out the truth.

Have you secured any other clues?

This is the surveillance footage at the crime scene. We used special technology to restore the visual.

We later identified him as Du Cheng.

Based on the audio and visual evidence,

we can reasonably suspect that Du Cheng killed M,

sabotaged the crime scene, concealed and destroyed the evidence.

Captain Du Cheng is the star of our Beijiang Branch.

He's solved many big cases over all these years.

Based on this one audio and one visual clip,

we're suspecting him?

- Isn't this a bit... - Nobody wants to see their colleagues in this kind of trouble.

However, the evidence is right in front of our eyes.

In front of the evidence,

everyone is equal.

Bureau Director Zhang, what do you think?

Suspension from investigating, first.

As for everything else,

wait until the investigation's outcome and then let us see.

Du Cheng, I don't care where you are right now,

come back to the office immediately. It's important.

Bureau Director Zhang!

I'm willing to cooperate with Officer Lu's investigation.

Let's start.

Everyone,

you should all know the purpose of my visit

was to investigate the 9-16 falling from a building and murder case.

Right now, we've got a basic direction.

Based on the evidence we collected, they're all pointing

towards Beijiang Branch Officer Du Cheng as the major suspect.

Also, at the crime scene,

the surveillance footage we obtained and verified through technical means,

confirmed that the person was Du Cheng.

- That video footage... - Jiang Feng!

Sit down.

Former Captain Du Cheng is a suspect in a major homicide case,

he's to be suspended from work. From now on,

the Crime Investigation Unit captain position

will be handled temporarily by Captain Lu Haizhou.

Any files and information associated with this case

will be handled by a new investigation team.

At the same time, the officers who have been involved in this investigation

will be questioned by Captain Lu at any time.

Everyone,

please make sure you cooperate with my investigation.

Captain Lu!

The reason you came here was to investigate Du Cheng?

Correct.

The City Bureau received an important clue,

a recording between Du Cheng and M.

The content was showing that M was afraid Du Cheng would kill her, she was begging him to let her go.

Although it was from an anonymous source,

it involves a murder case, so we must investigate it.

How can you trust the words of a suspect?

Through Tongcheng Company's verification by advance technicians,

the surveillance footage is true and trustworthy.

Instructor Shen,

when we close the case,

I really hope you can work with us at the City Bureau.

We really need talent like you.

It won't be necessary.

I trust Captain Lu

will return Du Cheng his innocence.

[Tongcheng Company Founder Chen Zhou: My dream for this technology started in my college days...]

[Maverick Top Student]

[Tongcheng Company Founder Chen Zhou: My dream for this technology started in my college days...]

Why are you here?

I want to talk to you.

What do you want to talk about?

You can't talk to me about the case, I cannot get involved at all.

I want to know your timeline that evening.

I was scheduled to meet M on the 5th-floor terrace of Huige Hotel that evening.

I cannot deny that the person in the surveillance footage wasn't me.

Because when I was fighting with Zhou Jun on the second-floor terrace, we did pass by that area.

Wooden crate.

Metal frame.

I have nothing to do with M's death.

In order to find the truth, I can only rely on you now.

The night of September 16th,

Du Cheng arrived at Huige Hotel at the appointed time.

He entered the hotel through the front entrance.

He took the escalator from the first floor to the fourth floor.

As he was walking on the fourth floor's walkway,

he heard a loud noise.

He saw M fall from above to the first floor.

He looked up

and saw a figure on the fifth floor running down the escalator.

Du Cheng ran up the fourth floor's escalator to chase them.

On his way up, he saw a figure bolt into the fifth floor's fire exit.

He jumped to another escalator on the fourth floor.

He dashed to the fire exit to intercept the figure.

After he entered the fire exit,

he saw it was Zhou Jun.

Du Cheng made a hot pursuit.

Zhou Jun, in order to shake Du Cheng off,

jumped straight down to the third floor.

Du Cheng chased after him.

He caught up to Zhou Jun on the second floor, but got knocked down the stairs by him.

Zhou Jun turned around and escaped through the safety exit.

Du Cheng continued chasing after him.

On the second floor, he and Du Cheng got into a fierce fight.

Du Cheng fought back.

Zhou Jun pushed him to the rail after kicking him to the ground.

At this time, Zhou Jun stood facing Du Cheng.

The glass partition on his right happened to reflect his silhouette.

The silhouette was captured by the surveillance camera located diagonally opposite, above the glass.

Therefore, the person who was caught on the security camera,

definitely couldn't have been Du Cheng.

- Amazing! - Great job!

I knew the video had to have been tampered with!

See? I knew there was no way Captain Cheng could be the culprit.

Exactly. Zhou Jun,

was the one who really murdered M.

Your reasoning is brilliant.

But this is only based on the descriptions from Du Cheng's perspective and your deductions.

It can't be used to prove a point.

But I think this reasoning is valid.

Of course...

everything is based on us believing Du Cheng.

- I definitely believe Captain Cheng. - I believe him too! - Me too!

Should we get ahold of Zhou Jun now to prove Captain Cheng's innocence?

Captain Lu, what's next in the plan? We'll follow your orders.

Get hold of Zhou Jun first. I'll talk to Du Cheng.

Yes!

Sorry for keeping you waiting.

I come here often.

But this is my first time sitting on this side. It's pretty surreal.

So, tell me

about what happened with M's death.

What do you think?

You killed M to avenge Lei Yifei.

After that, you took her diary

and destroyed the evidence, intending to cover up the truth.

Let's say you were the person behind an international human trafficking organization.

You were clever and business was going smoothly.

But seven years ago,

a police officer discovered you.

You had no choice but to kill the police officer.

Then while the authorities were after you,

a core member of your organization

disappeared with a confidential document.

To you, that document was lethal.

So you had no choice but to dissolve the organization. Yet this matter was constantly bothering you.

Until recently...

you found that traitor.

You also found out that

she was trying to get close to a police officer.

How would you feel?

- Like someone was breathing down my neck. - Exactly!

Why is she approaching the police? Will she hand over that vital document to the police?

If that police officer gets that document, then I'd be done for!

No. I must get rid of that traitor

and that police officer!

I can understand if he wants to kill the traitor, but why does get rid of the officer? That's incredibly stupid.

- Why? - Killing a police officer will only get more police officers involved.

What should I do, then?

Simple. Kill the traitor and then frame the police officer.

Are you telling me a story?

But I'm not the one who finished the story.

You did.

Give me a choice.

I really don't want to die.

Qin Nianchu.

[M]

I found M and Mu Wei.

Get ride of them immediately.

We provide a one-stop shop for security management services.

Tongcheng's mission is to protect the information security of everyone in Beijiang.

From the beginning, you had come to Beijing just to investigate me. Right?

We received a report about you.

No matter where I go, they'll still find me.

You killed my colleague, I'm going to kill you, too.

Give me a way out.

I want to live.

Choosing the Silver Eagle System will allow Tongcheng to provide security

for every network user's information through a wall of iron.

[Tongcheng Security]

This is the entire recording of my conversation with M.

Every word in the recording you just played can be found on it.

The so-called recording of yours

was pieced together by someone.

Captain Lu.

I'm that police officer that was framed.

Zhou Jun.

He's dead.

- Notify the medical examiner. - Yes.

Zhou Jun is dead.

His death is really strange.

There are no external injuries.

This must be the evidence related to the criminal organization he destroyed.

Now, M can no longer say what she wanted to say.

All the files on Zhou Jun's computer were forcibly deleted.

These files are what we recovered to the best of our abilities.

This video shows the girls abducted and trafficked by the human trafficking organizations from seven years ago.

On his computer, we also found records

of him tracking M's whereabouts, photos from the scene of M's death,

and photos of Captain Lei, who was killed seven years ago.

How could that be coincidental? We just found a lead and now he's dead.

We figured out the cause of death. He died of photosensitive epileptic seizures.

Photosensitive epilepsy.

Photosensitive epilepsy is triggered by a strong light source, flashes, and other visual stimulations.

The victim developed a cerebral spasmodic response.

He died from seizures, either during the flashing or after the flashing had stopped.

Captain Lu.

He died from a visually induced epilepsy.

No wonder there weren't any external injuries.

He died rather oddly.

A visually stimulated epileptic response

is the most common form of reflex epilepsy.

The most famous case is the one that happened at the end of 1997. ("Dennō Senshi Porygon," the 38th episode of the Pokémon anime's first season. Its sole broadcast was in Japan on Tuesday December 16, 1997.)

Seven hundred children in Japan, after watching a cartoon and being triggered by intense flashes of light,

were admitted for seizures at the hospital at the same time.

Li Han, help me check this video.

Okay.

You don't think his death was an accident.

That is strange. Why would an ordinary video have a code?

This... This is a virus.

When I ran the code, it immediately did that.

That's it. When the light intensity and frequency reach a certain level,

it's a fatal blow to epileptic patients who are sensitive to light.

This isn't an accident.

He was murdered.

This video wasn't just evidence against him.

It's also the tool that killed him.

Where did the virus come from?

It can't be tracked.

He didn't install any antivirus software on his computer?

He installed Tongcheng's latest security system software.

Logically speaking, this virus shouldn't be able to have penetrated the system.

But I've checked his system log. Half an hour before he died,

the security system was uninstalled.

Li Han, trace the origin of the virus. Get help from the cyber police if necessary.

Jiang Feng, get some rest first. We'll think of something tomorrow morning.

I used the wrong direction in my investigation before.

It was my fault. I would like to apologize to all of you.

After this, let's work together to find the real murderer

and bring him to justice. Okay?

Silver Eagle System can provide your cell phone with virus detection and removal,

a malicious URL scanner, privacy and security checks for public WiFi networks, and full protection.

We provide a one-stop shop for security management services.

Through Tongcheng Company's verification by advance technicians...

He installed Cyber City's latest security system software.

M told me over the phone that she heard the voice of the big boss earlier this year.

The last time Zhou Jun called to threaten her,

she heard that person's voice again, but she only remembered the words, "impenetrable wall."

Through an impenetrable wall.

Find that question mark.

If we look at all the current clues,

the culprit behind the scenes, should be Chen Zhou.

He's the most famous internet entrepreneur in Beijiang.

Can we get the search warrant?

It's really difficult. Even though Chen Zhou is under strong suspicion,

but he didn't leave any direct evidence.

All of these are just deductions.

Tongcheng is a high-tech company. If the investigation is carried out without direct evidence,

it'll probably cause some really negative impact.

We can only try to first investigate Chen Zhou quietly.

Let's see if any substantial evidence can be found.

If there are any findings, the subsequent work can be done more easily.

Investigate for how long?

We have to deploy more police manpower and also request more support from the technology unit.

It's hard to say how long it'll take.

I can only hope that they'll act first and give themselves away.

We don't have much time left.

He can make a massive trafficking organization disappear

and also destroy all the evidence within a short period of time.

Chen Zhou relies on his technical skills.

He must believe he's already executed this flawlessly. In this situation,

he won't easily reveal any flaws again.

[Chen Zhou]

Therefore, we must take the initiative to attack his vital points

and force him to react.

This is our only way to break through.

The incriminating evidence on Chen Zhou is like the algorithm.

It's all highly classified

and is surely stored in a top-secret place.

If we can find it, it'll be the most powerful blow to him.

Do we need you to say that? So where do we start?

The company, his home, or some other hidden place?

Can't you use your brain? To ensure security,

this place would be equipped with the most advanced security system.

It must also be easy for Chen Zhou to monitor and control.

Tongcheng Company is surely the most likely place.

Haven't you just circled back then? Didn't we just say we can't get the search warrant?

I can find another way to get in.

[Tongcheng Tower]

President Du!

President Chen left for a meeting.

- You're here today for... - It's fine. I'll wait for him here.

I want to chat with him about security systems.

Okay. I'll take you to the lounge. This way, please.

[Tongcheng Brochure]

- Have some water. - Thanks.

Thanks.

Does your company use your own security system?

Yes, President Du. We recently upgraded our office security system. It's very responsive.

Each employee has an ID card.

All the top security areas are equipped with infrared sensors.

If unauthorized personnel enter such an area, the police will be alerted automatically.

The employee's workplace monitor will be activated and President Chen will be notified immediately.

This sounds good. It can be considered the best advertisement.

How about this? Since Chen Zhou isn't back yet,

can you show us around and let me take a look first?

Then I can think about whether to buy or not.

Of course, we can.

This way, please.

This is the administration office.

Every employee has to use their ID card in order to enter.

Where is the computer room?

Straight ahead.

Right here is our core system room, but only President Chen

and the managerial levels in the technical department and above can enter.

I'm not authorized yet. Please forgive me.

[Floor 15 : Fire Evacuation Plan]

However, from here, we can see that the security system

is equipped with identity recognition.

In your security system, where is the highest level of security used?

President Chen's office.

In the entire company, he's the only person authorized to enter.

It's in the innermost area. Please.

[Notice: Authorized Personnel Only]

This way, please.

President Chen's office is in here. The door has a fingerprint lock.

An all-around infrared sensor system is inside.

If the alarm is activated, President Chen can see

the monitor displays within and outside the office on his cell phone.

If it's a false alarm, he can directly

cancel the alarm from his phone.

Up front is the lounge again.

Please wait a moment. I'll ask President Chen when he'll return. Okay?

- We've bothered you. - It's no problem, it's my duty.

Do you think it's in the core system room?

It doesn't look like it.

She said that higher levels of the technology department can enter the core system room.

The risk for exposure is too high.

I think it should be in his office. I'll take another look.

Hello.

Where's the restroom?

It's right there, turn left.

I'm going to the restroom.

President Du, this way, please.

Thank you.

Who are you?

- President Chen. - Officer Shen?

Are you looking for me about something?

I came with President Du Qing to come and see you.

I just went to the restroom and got lost when I came out.

I thought you couldn't find the restroom, didn't expect that you were already chatting with President Chen.

- Hello, President Du. - Hello, President Chen.

- Let me introduce you. - We know each other.

President Du made the introduction last time at the reception party, Officer Shen.

Last time, he was especially impressed by you.

This time, when he heard that I was coming over to discuss business, he insisted on coming over to visit you.

When esteemed guests arrive, we are extremely honored.

This way, please.

This way, please.

Come.

My office is very shabby, you must find it laughable. (T/N: it's a courteous phrase)

You're too humble. This understated luxury seems very much like your style.

Plus, the scenery across from here is excellent, too.

Right across from us is Liuli Island.

President Chen, our company is getting ready to upgrade the security system.

So I wanted to understand more about

the functionality of Tongcheng Company's security system, and see

if there is any possibility for our collaboration.

Sorry, President Du. Let me get this call.

Okay.

Hello.

Yes, I'm busy. I'll call you back later.

Sorry, Director Du.

We at Tongcheng have been looking forward to collaborating in-depth with President Du.

That's great. Just now, your secretary briefly showed us around a bit.

I didn't know it was so advanced, so eye-opening.

Let's do this. When I go back, I'll have my subordinate contact your colleagues,

and also use our channels to help expand your market.

I'm very honored. If you're free some other time, I'll invite President Du to a meal to express my thanks.

- You're too courteous. - Officer Shen.

If you're free at that time, come join us.

Sure. Hey.

Oh right, does President Chen like to play chess? (T/N: aka as Western Chess in Chinese)

Yes.

Chess is a war between squares of inches. It's very interesting.

Is Officer Shen also interested in chess?

I play occasionally.

Are you interested in a round?

Okay. Let's play and chat.

Okay.

I don't know how to play chess, so I won't stay then.

You two play. I have another appointment, so I'll be going.

- Okay. - We'll chat more about the details later.

- Okay, President Du. - Goodbye.

- Please, Officer Shen. - Please.

The King's Gambit.

Attacking the central pawn right at the opening to seize control of the center.

Although the pawn's sacrifice can speed up the formation,

it can also weaken the king's defense. President Chen,

it's a gamble of a move.

Aren't pawns supposed to be sacrificed?

It appears that Office Shen doesn't just play chess,

but you really excel in it.

How about a round of speed chess? When master players exchange moves,

let's do something fun: Chess960. (T/N: a variation of the chess game invented by World Champion Bobby Fischer)

Okay.

Please.

Officer Shen, the braver one wins when meeting on a narrow road.

If you continue to play conservatively,

you'll only lose at every move.

I've taken down your queen.

How many more pawns do you have to sacrifice?

Any of the pawns that reach your bottom line will be promoted to queen.

Right now, I'm using a queen to change the offense of the whole game.

It's worth it.

What an excellent move.

Officer Shen, you play at a professional level.

I have a good teacher,

Du Shang.

He once said this

"chess is

a silent knowledge."

Didn't you stay back to play chess with me...

because you have a question to ask me?

I had wanted to ask,

but your chess moves...

have already given me the answer.

From Lei Yifei's death,

to M, to Du Cheng, and Zhou Jun.

When every case was about to come to light,

there would always be...

an invisible hand that suddenly erased all traces of it.

That's because the opponent had already predicted your moves ahead of time.

It's just like playing chess.

Before making any move,

the chess player must predict at least fifty steps ahead.

You've met an expert in calculations.

Then have you ever calculated

how many pawns you'll lose...

in the next game?

Some pawns are meant to be sacrificed.

Was Zhou Jun also one of your pawns?

I said before,

"the King's Gambit" is the beginning for a gambler.

So...

as long as you keep sacrificing pawns,

President Chen,

you won't be able to win.

Your chess style is very fierce, Officer Shen.

I've studied your biographical data.

Early on, you developed an application

called "Zero Contact."

I didn't remember it wrong, right?

Users can share

the addresses, information,

and emotional states

of all single women around for free.

But these women know nothing about this, at all.

Preferential information and knowledge information can be shared.

Why not a person's information?

I only provided some convenience through technology.

But this technology has become a tool for human trafficking.

All these years, your technology has always been improving.

Now, you almost have total control of Beijing's surveillance in your hands.

With the convenience of your technology,

it should be a piece of cake

to tamper with one or two surveillance cameras. Right?

If you're planning on continuing with these questions,

I'll have to call my lawyer to come and answer your questions.

President Chen,

it's your turn to make a move.

You may have killed those who may have leaked your information.

You framed the one who suspected you.

Have you ever thought about

how dangerous it is when the king is left

all alone on the chessboard?

If you dare be a lonely king,

of course it's because you've left yourself a way out.

In a few days,

my Silver Eagle System will be officially signed and released.

Most of the citizens of Beijing will use my security system.

This is a great trust.

Tongcheng will do its best

to protect the privacy and safety of every citizen.

If you're interested,

you're welcome to attend our press conference.

You'll definitely have a new appreciation

for the power of science and technology.

I'll be there.

I have to witness

how you'll clean up this mess.

If we continue with this game,

it's most likely to be a draw.

But I never actively look for a draw.

Likewise.

I prefer winning, too.

Looks like we can't continue with this game anymore.

I have to prepare for my press conference. Let's meet another time.

Sister Qing.

- How did it go? - I figured out his trump card.

What is it?

After Silver Eagle System is released to the market,

he'll have control over the private information of all of Beijing's citizens.

Eight million people's privacy in exchange for one person.

This trump card is extreme.

Judging from the security level here,

the place where he hides his secrets should be his office.

But we didn't see

anything out of the ordinary in his office.

I still have a few guesses that need to be verified.

Since we've already made a move,

we'll just see what happens that day at the press conference then.

Shen Yi, thank you

for trusting him.

Tell me if you encounter any trouble.

I'm not going to let him off easy

for setting up my little brother.

Don't worry.

He can't escape.

Since he's sure that technology can control everything,

then I'll beat him using the weapon

I'm good with.