Original subtitles

[English subtitles are available]

In common sense,

if the past can be changed,

the future is bound to alter.

It sometimes

will be running

out of control.

Butterfly effect.

Yes.

It is a butterfly effect.

In natural system,

small changes of conditions

can lead to dramatic changes.

Quantum mechanics overthrew

this classic theory.

The emergences ofcauses

have a directing influence on variable that has been already taken place.

The reason why we are here

is able to let you know

the future can change the past.

Xia Wenxi?

Excuse me,

I came into the wrong place.

Hello, Yang Chuang.

Ye,

why is there only you?

Where is grandpa?

Youning is coming back from school.

He is sleeping...

I need to prepare dinner for him.

Grandpa, let's finish this first, OK?

Well...

Ye,

grandpa's illness is getting worse recently.

Maybe he can't recognize you now.

Grandpa.

Ye Youning?

You... When did you come back?

Yang Chuang,

who is he?

I don't know him.

Go away.

Grandpa, be careful.

Ye Youning?

Ye, don't feel too worried.

It's all my fault.

I should have come back earlier

and took grandpa to hospital.

I shouldn't have left him to you couple.

Don't feel upset.

Grandpa is getting older and older.

About this illness,

you know it better than we do.

You have done what you should do.

You always make calls

and find the best doctor.

You also asked the two of us

to take care of him.

You've done your best.

I haven't done my best.

It's way too far from my best.

He is my closest family.

But now...

Don't be sad.

Have some water first.

Yeah, have some water.

Thank you.

It's about to rain.

Let me.

You put the photos here?

I didn't.

Xiaoai did.

There are only a few

photos of you in high school.

So I hung them on the wall.

But you hung this picture of a losing game.

How unlucky.

I think

you're still regretting

that you didn't

score the decisive goal,

right?

Decisive goal?

I don't remember that.

Xia Wenxi?

Xia?

The radioactive unlucky girl in our class.

I saw her at the lecture the other day.

When did she go to England?

You don't know it?

No.

Now she is a traveling writer and

has been traveling around the world for years.

We can only know her whereabouts

from WeChat Moments.

But, every time she comes back,

she will come to visit your grandpa.

It's about to rain.

Youning!

Youning!

Grandpa,

let me.

You go now.

I'll make Wonton for Youning.

Let me take the umbrella.

I'll make Wonton.

I need to take a nap.

OK, sit down here.

Ye,

You're back.

Is grandpa okay?

Yes!

Alright.

Radio!

Radio!

Radio!

Radio!

Here is it.

According to the latest observations

released by the Antarctic Observatory,

a powerful gravitational wave

will reach Earth these days.

The gravitational wave was generated

by a heavy binary explosion

1.2 billion light-years away from Earth.

Research on gravitational waves

will have important implications for human

exploration of space-time travel.

Gravitational waves will cause changes that last for an extended period of time

in the space-time through which they travel over .

In the meeting on January 5,

2021, it was stated that...

On July 6, 2009,

our reporter learned that...

The 2018 national coordination of pension insurance...

Hello, everyone.

Welcome to today's morning news.

Today is March 1, 2006.

According to our reporters today...

The 2016 college entrance exam...

The phone is turned off. Why is it ringing?

Xia Wenxi.

I'm Xia Wenxi.

I'm 18 years old today.

Mom!

I'm 18 years old today!

Where is my lucky money for the past 18 years?

Mom!

How come this balance is zero?

This is your Grown-Up Ceremony.

I'm going to teach you

the first lesson of life today.

You must firmly

grab your money in your own hands.

I'll go dancing now.

Where is my ID card?

You can't go anywhere before the college entrance exam!

Don't even think about it.

Dad!

Sweetheart.

Your mom went dancing.

You know what?

Her dancing teacher

is very flirtatious.

I have to go keep an eye on them.

You? Dancing?

I can't dance.

But, I'm learning the taekwondo

next to them.

See?

Your father got a belt.

White belt.

You know what?

If anything wrong,

I'll give him an overarm throw!

I'm 18 years old!

My birthday!

Look at you.

Let me see...

I can't give you 100...

Another?

Don't touch it.

50 is also too much.

20 yuan. OK?

You want it?

OK. OK.

Here. Come here.

Wait. Wait.

Come on. Let me go.

Buy yourself some good food.

Well, I'd better take it with me.

It's money at least.

Perfect.

Wenxi, go to school?

Yeah!

Money loss.

Prevent disaster!

Good! It's done!

Grandpa,

Grandpa Zhou!

I need my phone and bicycle!

OK.

Here.

Your phone is fixed.

It cost my whole last night.

It's really fixed?

Grandpa, thank you!

What about my bicycle?

Let me give you a surprise.

What is this?

Wenxi,

from today on,

you'll be an adult.

I have no good thing for you

as present.

So I installed a sidecar

on your bicycle.

It can be more stable while riding.

Then you won't always fall down

like before.

Grandpa,

you remember my birthday?

Of course!

First day of March, right?

Yes! Right!

Thank you, grandpa!

Then I...

I'm leaving to school!

-I can't be late. -Sure. Go now.

Oh! Almost forgot.

Goodbye! Grandpa.

Bye!

Daytime meteor?

There is a meteor!

No one noticed that?

Shooting star.

If there was

only me who saw you,

I hope you can fulfill

all my wishes.

I hope the world in peace.

And, I want a Doraemon.

I also want

the ice-cream fell on the ground

to fly up.

The most important thing is I want a time travel machine.

Xia!

Don't be late today!

You can make it!

Come on!

Yang Chuang!

It's my 18th birthday today.

I'll definitely not be late.

Yang Shiyi!

You...

Why is the gate closing so slowly?

It will speed up in the future.

Kid,

are you okay?

Yes!

Sir, thank you!

Go to the hospital if you feel bad!

Xia Wenxi.

I'll let you go this time.

But, let's see it tomorrow.

Excuse me. Sorry for just now.

Go to your class now.

I also need to go.

See you next time!

Affiliated High School of Jiangcheng University?

Electronic appliance sale!

Final day!

March 1, 2006!

Last day of the sale!

2006?

March 1, 2006?

Wasn't it the first day of my senior year transfer?

Why am I here?

Am I dreaming?

Self-harm?

Self-harm is the most cowardly performance.

You can't harm yourself even if you're under great pressure of study.

Which class are you in?

Director Zhu?

Come with me!

Let me see which class you are in.

Come with me!

A rap star is about to rise

in Jiangcheng.

Quiet!

Have a look.

Is he from your class?

No.

No?

Go back to your seat.

Yang Chuang,

IQ 105.

Enthusiast of Hip-hop Culture.

Has always dreamed of entering

a talent show to become a hit.

Unsuccessful yet.

Chen Tingting,

IQ 127.

Basic type.

Works hard to make up for the talent.

Lin Jiaqi,

IQ 133.

Smart one in the common sense.

Mainstay of the basketball team.

But his basketball skill is just so-so.

Gao Xiaoai, IQ 111.

Good at shot putting.

Hobbies: Eating, chatting, beating Yang Chuang.

I'm really back to my senior year in high school?

Yang Chuang! It's mine!

Give it back to me!

Stop it!

Director, what brings you here?

Mr. Wang,

is he from your class?

Oh, yes. He is.

I didn't expect you to come yourself.

Mr. Wang, he is your student.

I gotta go.

OK.

Everyone,

let me introduce you a new classmate.

Ye Youning.

Let's welcome him.

Alright.

Ye Youning

transferred from No.1 high school of Huanzhou.

He had very good grades before he transferred.

He is going to study abroad after high school.

If this is all real,

how should I get back?

You are...

I don't want a deskmate.

It's will influence my study.

From now on,

we need to learn from each other

-and unite. -Yes!

Is he the one

who got hit by the car just now?

He turns out to be a straight A student.

Sit beside Xia.

Sit beside Xia.

I didn't know it was you.

Xia Wenxi, one of the top ten wretches.

She would be dried even if

you put her in a pot full of lard.

The most important thing is

her bad luck

is powerful and destructive,

and will even spill over

to those around her.

Stop gossiping.

Continue the morning reading.

Still eating?

A student, A student, A student,

he turns out to be A student.

Headache, headache, headache,

he brings us so much pressure.

Any other rhymes?

Hello, I'm Xia Wenxi.

About what happened this morning,

I was not on purpose.

It was an accident.

I'm really sorry.

But I didn't expect

you to be a straight A student.

I'm Ye Youning.

Nice to meet you.

From now on,

you will be my lucky star.

I'll definitely treat you well.

Lin Jiaqi,

Xia Wenxi.

The two of you, come to my office.

Others, keep on studying.

Keep quiet.

OK.

Mr. Wang.

What? This...

Why does Mr. Wang ask for the two of us?

I don't know!

Did he find out that

we barbecued at the screening club?

No way.

Definitely impossible.

I'll get to the point directly.

Time for the senior year is limited.

You just tell me the truth.

Are you in a relationship?

Sir,

we're really not.

Be serious.

Ms. Zhao has told me.

She saw you being together

many times during the winter vacation.

Sir, we have been together since childhood.

We met each other

when we were in mothers' bellies.

We've been together since we were born.

What about the cuddling?

I have seen that for many times.

Well... Lin Jiaqi is just my bro.

I have been doing this for many years.

Arm off him.

What are you doing?

Is there really nothing between you two?

Yes.

I swear.

I swear to that light.

Even if I have any feeling for him,

it could only be the accumulation of dislike.

You should swear as well!

What's wrong with you?

Swear?

I'm so tall and handsome.

Why do you dislike me?

The first thing I dislike of you is your height.

It's not like when we were children.

I could grab you over directly then.

Look at you now.

I can't even reach you.

You know what?

This is called the cutest height difference.

Have you ever seen any male lead

being hugged at will by others?

You...

Don't you feel that

you forgot anything

really important today?

I forgot to hand in my homework!

He will remember it soon.

Alright, everyone,

open your text book.

How did I come back to 2006?

What's the reason that

caused the time and space change?

Is this time-line now my past,

or another 2006 in a parallel universe?

No matter which time and space it is,

I have to find a way to hurry back.

Grandpa is in serious illness. He needs me.

"No one knows how many tears there are."

"No one knows how many tears there are."

"Looking at Chang'an in the Northwest."

"Looking at Chang'an in the Northwest."

What are you doing?

Good of you.

It's morning reading for Chinese.

But you're doing English exercise?

Go stand at the back.

Watch the blackboard now.

Let's move on.

"Looking at Chang'an in the Northwest."

"Looking at Chang'an in the Northwest."

Welcome to my back of the classroom.

This is the cool place of our own.

Study math in Chinese class.

Study chemistry in English class.

Look how different you are.

Look at you smart guy.

Yang Chuang, what are you doing?

Stand straight!

You're the only talkative one.

Louder.

"Full of worries, I'm in the sunset."

"Full of worries, I'm in the sunset."

It's real that the genius and nut

are totally different.

You're thinking.

Let me write a poem for you.

What's wrong with you?

You have known the steps of the operation.

Every one of you must follow the operation

step by step

and be careful.

Don't panic!

Let me help you!

Sir, what's going on?

Everyone, calm down.

Alright, don't be scared.

Calm down.

OK,. Let's continue the experiment.

Ye Youning.

Ye Youning?

Why are you doing physics exercise

in chemistry class?

Although gravitational waves cause small changes in space and time,

they do not have such a large impact.

ABCDEFG.

What the exercise Ye Youning is doing is.

I must have triggered something.

What is it that...

Broke the barrier between space and time?

Respect!

He has been writing this through many classes.

What is he writing?

Can you understand it?

I can't.

Straight A student's world is really special.

Is this

an OU problem?

Ye Youning, what are you doing?

You have been counting the whole morning.

Ye Youning is studying.

Don't disturb him.

And, Xia Wenxi,

I just saw you playing your phone.

You will lose 2 points.

You always only deduct mine.

Do you dare to deduct his?

I almost have no points now.

Don't lean on my books.

How can you compare with Ye Youning?

With his level,

he is better than you even if he doesn't listen to the teacher.

All back to your seats.

A few minutes early for your class today.

I need to explain one question.

Paper 2 of homework for winter vacation. Question 15.

Watch it on the blackboard.

What are you writing?

Come on.

Explain it to us.

What are you writing?

Time Swap.

I'm going to change human history!

What did you say you are doing?

I'm going to change human history.

Squat here.

Let's see what you can change.

What are you looking at?

Let me see who else of you

wants to change human history!

Alright, have you known

how to answer the question just now?

Yes.

Everyone has known it?

Ask me if you have any problem.

Alright, let's move on to the next question.

That phone belongs to her!

Xia, let's go.

Xiaoai!

Come on.

Is it because I pressed the phone's on button

that broke the barrier between to two time-space?

Then Xia Wenxi's phone

may be the key point of the Time Swap.

Maybe I can go back

after I press it again.

I have to try no matter what.

Alright,

now it's your free time.

First of all,

don't go back to your classroom.

Get it?

Yes!

Alright. Dismiss!

Great!

Tingting.

I'm exhausted.

Have a look.

What's wrong with my phone?

It's fixed today.

Why is it out of work again?

Now not only the signal is missing,

but the battery is also broken.

Didn't you drop it in the morning?

Was it broken back then?

I checked it right after I dropped it.

It was fine.

Why is it like this suddenly?

Pong-pong, pong-pong, pong, pong.

What are you doing?

Where is my notebook?

Xia Wenxi,

disrupt the class.

Deduct 10 points!

Nothing happens?

Wenxi,

are you alright?

Why are you holding my phone?

Did you get hurt?

I'm fine.

Hey.

You are tall.

Can you play basketball?

What?

You can't?

Amazing!

Is your phone alright?

You're amazing!

Lin,

let him join our basketball team.

If we have you this year,

we can definitely win!

Lin, right?

Indeed.

We only needed

one more point to win Class 8.

You don't know how proud they are!

Zhao Bin even walks

with his nose in the air.

We have to defeat them this year.

Yeah, Lin.

Alright.

Fine.

If you want me to join the basketball team,

lend your phone to me for days.

I can lend it to you.

But, you have to tell me

why you want it.

Then, I will think about it.

How about I lend you my phone?

I have my own phone.

Then why do you want mine?

He scores.

See you.

Double espresso.

What?

Coffee.

Any pour-over coffee?

Can you help me to get

the first basketball in the second row?

It looks good.

This?

Thanks.

96.5 yuan in all.

Forget it. Sorry.

Basketball game is not difficult.

It depends on what you provide me with.

Pay for the coffee!

Apple pay?

What?

Can this do?

OK.

Your change!

He left it to treat us the lollipops.

Why is he standing here? So awkward.

Yeah.

Why is he standing at the entrance of the ladies' room?

What's wrong with him?

What's the problem?

What's going on?

Sorry!

What's the next class?

Why is he standing here?

He is still here?

What is he doing?

Lin!

Sorry, Xia.

I got other things to do today.

I can't go with you.

Tomorrow.

See you.

Well, forget me.

I'm afraid of your bad luck.

I...

I haven't even said anything.

Of course.

New look for the new semester.

Not new back luck.

Can we go home together today?

Wenxi,

I went with you even if we're in different directions.

But I got something to do today.

I have training.

Hello, Coach?

Tingting!

I... I...

I can give you a ride.

The slope in front of my home is too steep.

I'm afraid it'll be tiring for you to ride.

Taking the bus is more convenient.

None of them remember it.

I still have to find a way

to get her phone as soon as possible.

Grandpa,

-Wenxi, you're back! -Grandpa?

How was the ride?

How was the ride?

It's great.

Grandpa, what are you doing here?

I'm waiting for my grandson.

Ye Youning is your grandson?

Yeah. He is my grandson.

It's your birthday today.

Your parents must be waiting for you to have the dinner together.

Go back now.

They must not.

Youning!

Youning!

What's wrong?

I haven't seen you for a while.

I have

made the Wontons you like the most.

Come on.

Youning.

You're back.

I made the Wontons you like the most.

I don't like Wontons now.

What... Why do you not like it now?

What's wrong?

Why are you crying?

Who bullied you?

No.

Grandpa,

you're wearing too much ointment.

It makes my eyes sore.

The smell is that heavy?

I'm hungry. Let's go home.

You know what?

Ever since you decided to go abroad,

you haven't come

here for more than half a year.

I miss you so much!

You know?

And I made you the wontons

you like the most today.

You don't know what the stuffing is.

You know what?

Later

you can have a big bowl of it.

Coming!

Here come the wontons!

Thank you, grandpa.

"Bao Longtu meditates..."

Let me have a drink with you.

What are you doing?

Kids are not allowed to drink.

Oh, right.

Eat the food.

I'm a high school student now.

How does it taste?

Great.

Then eat more if you like.

What are you doing?

Don't bother.

Put it down.

I'll handle them.

If you

have had enough,

hurry up and go to study.

Grandpa, you should take a break.

You have been busy for the whole day.

Why should I?

I have been sitting here for a day.

Go to study now.

Grandpa, my grades are great.

Oxford, Cambridge, I can choose whatever I want.

Let me throw the trash out for you.

It's good to see grandpa in good health.

But the more it's like this here,

the more I need to go back.

Because my grandpa there

needs me more.

Since pressing the button of the phone doesn't work,

there must be something wrong.

Xia. Xia!

Xie Wenxi!

Xia Wenxi!

Xia Wenxi!

Wenxi!

You guys?

Why are you guys here now?

Wenxi,

you're so greedy.

You always eat my snacks secretly.

Every time when we grab the periphery of Mayday,

I, as a shot putter, can’t even beat you.

Yeah.

Right.

You never go to the library with me.

You only take me go shopping with you.

Every time

I feel like I'm ready to die.

Yeah.

So bad of you!

Look at you!

Wait.

You're all here at night

only to tell me these?

Why are they here?

What's this?

Selected exercise.

I don't want selected exercise!

Open it first.

Happy birthday!

So, you kept me in the dark for a day!

And it's Mayday!

Xia,

happy birthday.

Thank you, Lin!

Xia,

it's made just for you.

You're so mean!

I'm being thrifty!

Wenxi.

This is not necessary.

Tingting.

Take your phone out and put it on!

I said you were so slow!

Look at this now.

All the surprises we planned

have now been preempted.

Get out now!

Mr. Xia.

Are you alright?

Well, kids,

I have prepared you a feast.

Masters, come in and have the meal.

Thank you, Mr. Xia!

Dad! Mom!

Why are you...

For grandpa,

I still have to get her phone

and find out the reason.

Ye Youning?

Join us to have the cake together.

Qiuju,

it's almost past 12.

It won't be February 29

if it's past 12.

Listen to me.

Please give birth

to the kid before 12.

Then we can celebrate the birthday every four years.

That'll save us a lot!

Come on!

I'm here!

Push harder!

You got this!

She looks really like me.

So close. So close.

Xia Nanshan!

It's not our kid!

They all say kids

all come to the world with tears.

Can you stop your acting?

But I

came to this world with smile.

The doctor who delivered me said

the baby was going to have a lot of happy things in her life.

But

it turns out that

she meant funny things.

It's OK.

My father said

everyone has two lives in life.

The life before 18 is given by parents.

I tried. It's bad.

The life after 18 is made by yourself.

I decided.

I'll grab the chance

to turn the situation.

Oh, my!

Wenxi, go to school?

Yeah!

Money loss.

Prevent disaster!

Shooting star.

The most important thing is I want a time travel machine.