Original subtitles

Also, based on the reflection of light on his pupils,

there should be a light ray from the lower right part of the video

pointed at Xu Siwen.

But from the shadows on the body,

you can see that the light rays are coming from the upper right.

Teacher Shen, the video screenshot has been printed.

Thank you.

Other than what you just said, are there any other abnormalities?

Look at the lighting here. And the shadows.

On the right side of the video, there should be equal lighting.

The lighting in this area of the video is so strong.

The dark area in the mouth shouldn't be as bright as this.

There's also the position of the cheekbones. The light that should be there can't be seen.

The strong brightness outside the window has no dimming effect on the facial contours.

Also, right here. Based on the light on his hair,

there should be overhead lighting.

The lighting in this video is too irregular.

There's also the entire face... the contrast is too low.

This isn't a simple suicide.

And this isn't the real Xu Siwen.

This is a face constructed through A.I.

In the process of our investigation, we've discovered

there's a hidden gang running scams behind this.

They used A.I. to swap the faces and then pretend to be part of the family.

The targets are usually the elderly.

I approve your request to open a case.

The tragedy in Teacher Xu's family has been replayed in many places.

I'll ask the higher-ups to unite affiliated units for a joint investigation

to check all the unresolved fraud cases involving seniors.

I hope you'll urgently work on this investigation

so that you can bring those scammers to justice

before more innocent seniors become victims.

- Yes! - Yes!

[AI facial synthesizing technology] (T/N: aka DeepFake)

33Q3, please wait a second.

[Scam Case]

[Among cases where the seniors' assets were dissolved, none of the victims filed a report with the police]

[Beijiang]

[Beijiang City Bureau of Public Security - Beijiang Branch] [Criminal Investigation Unit]

At this time, we can be sure that

the source of these fraud cases involving AI face-changes originated in Beijiang.

All the victims are old people whose children aren't by their side.

The method is vicious. Many seniors have been scammed.

After the seniors have been cheated by the changed face videos,

the methods to send and withdraw the money are also very similar.

Once the money is wired to an account, it's always redistributed to different underground money houses.

In other words, this is a continuing serial scam by one person or a gang.

There are many scam victims, including those

like Teacher Xu who lost all their money

and ended up taking their own lives.

What's the situation with Tongcheng Company now?

It's an information security company.

Previously, when I attended a police equipment exhibit,

I saw their company recommending facial recognition.

The person in charge of the company took the initiative to come to us,

saying that they were developing an algorithm aimed at detecting changes in faces.

- What are you doing? - Let's go!

[Tongcheng Tower - Cyber City]

Generally, several open-source face-changing software apps

can achieve a pretty high level of authenticity.

But they can still be easily identified as having been modified.

Then why does this video look so realistic?

It's not easy to achieve this level.

First of all, they must have technical knowledge.

He then has to personally perform

the content in the fake video.

That's why I recommend that you first investigate

who could get ahold of that many photos or videos

of the man whose face was changed.

Jiang Feng, check into Xu Siwen's social media.

Find out which social media platforms he frequents.

Our company's technology is strong.

All of the current open-source AI facial composition apps

can be identified and discerned.

But the requirement is we need the real person's authentic video as a reference for facial expressions.

Then, what kind of person can achieve this level?

Two kinds. The first kind,

a highly skilled programmer who can make targeted algorithm improvements.

But anyone who has this ability to adjust algorithms is usually earning over ¥1 million a year.

They likely would disdain doing something like this.

The second kind of people must be able to access a lot of photos

or videos to perform more machine learning.

That can also achieve pretty good results.

Therefore, the probability for the second kind is higher.

You were saying just now that the criminal

needs to first film a fake video to change the face.

Can we use any technology to restore the face before it was changed?

It can't be done. Based on the current technical know-how and computing power,

it simply cannot be achieved.

[Analyzing...]

[Analysis completed. Confirm to view the results]

[Analysis completed. Confirm to view the results]

[Inconsistent facial expressions. Confirmed to be false.]

[Beijiang Criminal Investigation Unit]

We found all the senior victims within our jurisdiction and visited their children

and got these changed face videos.

How many of them in total?

Eleven in total.

Some of the seniors are more vigilant and didn't get scammed after receiving the videos.

Some of them had children near them and got stopped in time.

What are you thinking?

The face is our most important identifier.

But to steal them

only takes a few minutes or even a few seconds.

Quietly done.

We don't even know who our opponent is.

Instructor Shen, what are you doing with these screenshots?

In the facial expressions and muscle movements in these videos,

I can observe a similar pattern.

These eleven faces

very likely came from the same base.

What I'm looking for now

is the pattern of muscle movements for that base.

All right. What's next?

Please help me by replaying

- all the eyebrow areas. - Okay.

Please replay the eyelid areas.

And now replay the mouths.

Morning, Captain Cheng.

Captain Cheng.

You drew all night long?

Instructor Shen drew all night to finally get it.

This is the person hiding behind the scenes?

Instructor Shen says this face is the base for those eleven faces.

Through the facial expressions and traits in those videos,

he surmised the basic locations of the suspect's

facial features and muscle contours.

Isn't that right, Instructor Shen?

Even technology can't restore it.

You can restore it based on your own eyes?

No matter how advanced technology is, it cannot replace the human brain,

insight into complex human nature, as well as things that need a bit of insight.

I believe my eyes and hands.

This face...

How do I say it?

An average face.

Yes, yes. Nothing special about it.

Having an average face is special in and of itself.

An average face means the facial features are placed evenly.

It's a very important reference for portrait painting.

Correct.

The face perfectly fits all of those eleven fake faces.

The hardest thing to do in sketching

is not to draw a face that's identical to the suspect's,

but to draw a similar temperament

and crucial traits.

Everyone, take this drawing and re-visit those people connected to the victims.

Jiang Feng, lead a unit to investigate Xu Yiduo's old acquaintances.

You and you, go to the markets and the bank that Teacher Xu frequented.

You two, follow me.

Let's go to the old lady's hospital to see if anyone

has seen someone with a similar temperament and traits from the portrait.

Hello, Officer Du.

The address is on it. Don't be polite.

- Call me anytime if you need me. - Okay.

[Meng'an Rehabilitation Center]

Hello. We're from the Beijiang Branch Criminal Investigation Unit.

In your mind, have you seen anyone who looks like this person?

He looks a little familiar.

But I can't remember where I saw him.

Please try to think harder.

It's fine even if it's only a slight resemblance.

I remember now. Last time, when I was in Old Xu's home,

their care worker looked somewhat like this person.

This is great. Thank you.

We've bothered you.

Police Officers.

The person that you're looking for is a man, right?

Yes.

But Old Xu's care worker is a woman.

[Meng'an Rehabilitation Center]

Police Officers, I've found it.

She's the care worker who worked at Xu Yiduo's home.

[Zhang Xiaoxue]

[Times, dates, contact numbers, and addresses where the health care worker was working]

Stop.

[Times, dates, contact numbers, and addresses where the health care worker was working]

Li Xianglan? Xiang...

[Li Xianglan]

Li Xianglan... is one of the victims.

[Huang Yuan]

[Zhang Jianguo]

Zhang Jianguo.

[Zhang Jianguo]

Mei Chaoying.

[Mei Chaoying]

Zhou Guangnan.

Boss, these elderly people are all scam victims.

It couldn't be that coincidental, right?

[Mei Chaoying, female, 76 years, 1/6/18]

[Zhang Jiang Guo, male, 83 years old, 5/1/17]

[Li Xianglan, Mei Chaoying, Zhang Jianguo, Zhou Guangnan]

It can't be a coincidence.

[Zhang Xiaoxue]

She is a serious suspect.

- Name, age. - Zhang Xiaoxue.

28 years old.

Profession.

Meng'an Rehabilitation Center's care worker.

What's your relationship with Xu Yiduo?

Previously, I always went on Thursday every week to Teacher Xu's home to help tidy up

and take care of Auntie Wen.

I signed a three-month contract with him.

The week before last, Teacher Xu gave me my last paycheck.

He told me not to go there anymore.

How did you establish this employment relationship with Xu Yiduo?

He probably asked the medical care center to find a care worker.

Our company makes random assignments.

At that time, I was assigned because I was available on Thursdays.

Has something happened to Teacher Xu?

Xu Yiduo committed suicide a week ago.

What?

Did he show any unusual behavior in the last few times that you saw him?

No, not at all.

I remember when I went there, I saw him and Teacher Wen

discussing whether to go visit their son.

His son should be living abroad.

They didn't look at all like they would commit suicide.

Do you remember any unusual details? Even the smallest change is fine.

I have to work with four different families in a week. I really can't remember.

But our company has a rule that

we have to write a care report after working in each family according to the rules.

Then submit it to the company.

Can you show us your care journal?

Yes, but that care journal

is at my house at the moment.

Zhang Xiaoxue says her care journal is at her home.

- Go get it and also see if there are any other clues. - Okay.

I'll go.

- Just let Jiang Feng go. - I'll go. I'm worried there might be something missed.

That's fine. You go with Li Han then.

No, no! Why would there be something missed if I go?

Forget it. Don't mind him. Look at how his gaze has become.

[National Exam - Mock Test]

[National Exam - Mock Test]

This is the care journal where I record my work every day.

Can we take the PC?

Yes.

So far, we've found at least four seniors who have interacted with Zhang Xiaoxue.

These seniors found care workers through the rehabilitation center.

Therefore, Zhang Xiaoxue has their contact info and can get materials to change the face.

She can also be sure that the seniors' children aren't with them for long periods of time.

If there are any photos of the children in the home, it's likely she can get them too.

But we didn't find anything in Zhang Xiaoxue's PC and cell phone browsing history

that she ever looked at the social media accounts of the elderly people's children.

Nor did we find any other people's photos.

Also, according to the PC's operating history,

this PC hasn't been used for a long time.

I don't think Zhang Xiaoxue is the scammer.

Under normal circumstances, a scammer

would disappear after a scam was completed.

To avoid being exposed, they would change their identity

and search for the next target.

I agree.

Zhang Xiaoxue has never left her job ever since she started working there.

She's always been in Beijiang and never even changed her address.

If she really is the scammer,

or a member of a scamming gang,

she shouldn't have stayed in the same place for such a long time.

I remember Tongcheng's people say that the more photos there are,

the effect of the face change is more natural,

making it more difficult to discern.

How about starting from the source?

Check all the accounts that have visited those social medial accounts,

then isolate those with abnormal data, and then locate the IP addresses.

I can contact Tongcheng Company to provide technical support for us.

Do it right now.

We must find this scam gang as soon as possible to avoid more people becoming victimized.

Especially those old people who aren't familiar with the internet.

Yes, that's it.

Look at this. Change it a little.

This one, yes. Try switching the two of them.

- Is this right? - Yes.

I've locked the range.

After repeated comparisons, I've narrowed it down to these four IP addresses that show obvious abnormalities.

Can you ascertain the physical address?

Yes.

[IP Address: Unit 210, Donghuan Residential District 3, Beijiang City]

Only one address.

It must be the same person using four different IP addresses.

It's correct then.

This address is Zhang Xiaoxue's home.

Police Officer, about Teacher's Xu's death,

I really don't know anything.

Who's the man living with you?

A woman who lives alone,

but has a men's shaver in her drawer.

You don't smoke, but there are so many cigarette lighters at your house.

You are not tall, but the often-used bath tissues are placed on top of the cabinet.

All of these mean that there's a man in your home.

And he's very tall and likes to put things in high places.

When you need them, he'll take them down for you.

But we've already broken up.

What's his name?

Hu Zhifeng. He's two years older than me.

What does he do?

He works in sales at Computer City. His sales performance is pretty good.

He helped me lease that apartment.

Not too long ago, he told me he'd left his job.

I haven't heard if he's found a new job.

When did you break up?

- Last week. - Why did you break up?

He was always on business trips and would be gone ten days to half a month every time.

I was with him all these years,

but I still didn't know what he was busy doing.

Has he made trouble?

How long would most of these fraud charges be convicted for?

Somewhere between three years to ten years.

Hu Zhifeng's location has been found. It's at an express hotel on Beixin Road.

- Room 318. - Jiang Feng.

Notify all the colleagues to meet and formulate an arrest plan.

- Okay. - Sheng Yi—

- Where did he go? - I don't know.