All language subtitles for Jang Yeong Sil e17

Episode 17

Your Majesty.

The Haedong Water Clock
cannot be our official clock.

Why do you say that?

It follows the design of
Su Song's water clock.

It is not accurate enough.

To prevent our current problems
from reoccurring in the future,

we must make a new clock in a new way.

Your Majesty.

I observed the Haedong Water
Clock operating for many days.

It has never been
inaccurate, not even once.

It is missing the armillary sphere
which Su Song's water clock has,

so it is not completed yet.

However, it tells the time accurately.

(King Sejong: The fourth king of Joseon)

Cogwheels and gears are what
move Su Song's water clock.

Cogwheels and gears are made of
wood, so they wear out easily.

They can be replaced frequently, but
if it's not done at the right time,

the clock will become inaccurate.

Your Majesty. The person who
made the clock would be...

the best person to tell whether
it is accurate or not.

Officer Jang, who is in
charge of the water clock,

is saying that the Haedong
Water Clock is accurate.

I trust that we should believe
what he is telling us.

Your Majesty.

Sir Jang is saying that he has an idea.

How about we listen to it?

We should do that.

Sir Jang.

His Majesty is waiting for your answer.

Yes, well...

I apologise, but right now,

I don't have anything to tell you.

How brazen!

Your Majesty.

According to Lee Sun Ji, who
saw the Haedong Water Clock,

the clock is more than good enough
to become the clock of Joseon.

Hence, please end this discussion,

and bring the Haedong Water
Clock to the Palace.

While Officer Jang works on
making the armillary sphere spin,

you, my ministers, should observe...

the Haedong Water Clock
whenever your time allows.

We will discuss this matter again
after observing the clock.

Understood, Your Majesty.

I'm pleased to see you.

It looks just like the water
clock we saw in Beijing.

I'm impressed.

You made this by yourself.

Now, make the armillary sphere spin...

so that this Haedong Water Clock
can become the clock of Joseon.

What you just said.

Do you really mean it?

Hee Je. This is about the
advancement of Joseon's science.

I would not be biased...

or take sides between you and Yeong Sil.

It is because the both of
you are equally important.

You two are both irreplaceable talents.

If both of your ideas succeed,
Joseon will flourish twice more.

Why would I neglect or undermine
your talents and skills?

Finally, we have a minister
visiting from the court.

I heard that ministers would
be visiting to see this,

but no one has come yet.

I am glad that you are
here to see this clock.

I know that Officer Jang has been waiting.

None of the ministers have gone to
observe the the Haedong Water Clock?

That is correct, Your Majesty.

Did I have to give them a command
to go and see the clock?

I was hoping that they would
voluntarily go and observe it.

Your Majesty.

So you saw it.

Did the Haedong Water Clock impress you?

Yes, Your Majesty.

I shall go and see the
Haedong Water Clock myself.

I should praise Officer Jang
for all of his hard work.

Yes, Your Majesty. That would
greatly encourage Officer Jang.

I am sure that Yeong Sil...

has also been working on making something.

Yes.

I agree with you.

Otherwise, he wouldn't have
mentioned using "a new method".

When the right time comes,

Yeong Sil will show us.

Let's be patient and wait for that moment.

What would Yeong Sil show us?

Doesn't it intrigue you?

This should go here.

If they're going to read these books,

they should put them away
properly after reading them.

Why are all these almanacs here?

Wait a minute.

I'm the Assistant Officer of Astrology.

I shouldn't be organising books here.

I should tell all of them to gather and...

Yeong... Yeong...

Yeong... Yeong Sil.

No... Sir Jang.

Have you been keeping well?

Yes.

Yes. Well... I've been...

You have been...

keeping well yourself too, right?

I missed you.

Me, too.

I missed you, too.

I had many dreams about you as well.

I knew that you'd return
gloriously like this.

My readings predicted so.

This is the first time...

that we're sitting together
after you returned.

When you were injured,

I went to see you briefly.

Yes.

I heard it from the Princess.

You got beaten up because
you spared me my life,

so I was very worried.

I'm glad to see you recovered and well.

You probably wanted to kill me.
How did you suppress the urge?

You wandered around because you
couldn't come back to Hanyang.

I am sure the thought crossed your mind.

You probably hated my guts.

I forgot everything, my lord.

The King has...

worked hard so that Joseon can make
its own astronomical observations.

Now, we can freely discuss
astronomy and make clocks.

Thinking that my world has arrived,

I was excited for a brief moment.

But you came back.

The King thought that you were dead.

But it is almost as if he
worked so hard because...

he knew that you'd return like this.

None of it was for me. The
King did it for Joseon.

You are very much aware of it, my lord.

Why did you come to see me?

Well...

You said that you must make the rings...

in the armillary sphere spin to
complete the Haedong Water Clock.

By any chance,

are you trying to make the
rings spin separately?

Why are you asking?

You won't be able to make
the rings spin separately.

Within the structure of Su Song's
water clock, it'd be impossible.

What did you just say?

I know what you're doing.

You're trying to impede because
you're jealous that I might make...

the armillary sphere rings spin,
which you couldn't do in Ming.

My lord, please calm down and listen to me.

Shut your mouth!

I cannot listen to your impudent talk.

If we can measure their weight accurately,

we should be able to make the
rings spin separately, right?

I hope that is the case.

I think they will spin.

You're here.

We're measuring the
weight of the rings now.

They won't spin well if they are too heavy.

Yeong Sil said that...

this armillary sphere won't spin.

What a strange man.

I heard Sir Jang said that...

a new method must be used
to make clocks and that...

he criticised the Haedong Water Clock.

Because of what Sir Jang said,

everyone was guessing that
he'd be making a clock now.

But according to the rumours,
that is not what he is doing.

I heard that he isn't working
on anything at the moment.

That makes no sense.

He can't be doing nothing when he
brought up using a new method.

What are you working on now,

Jang Yeong Sil?

Well...

If Sir Jang said that the
armillary sphere won't spin,

there must be a reason.

- So Officer Jang, you should...
- Your Highness.

I will be back shortly.

Do you want to get beaten up again?

I can't believe that you're
visiting me like this.

What is this now?

It is a small gift from me,
who is your childhood friend.

I hope it can be put to good use.

I need to know why you're
giving it to me...

to decide whether to put
it to good use or dump it.

I think that Yeong Sil is...

making a water clock in secret.

Find out where he is
making the water clock...

and tell me.

You must not...

You must not destroy or set the
place on fire before I arrive.

Promise me now.

You're too late.

Someone already gave me...

a lot more silver coins and told me
to burn Yeong Sil's water clock.

He also wanted to destroy
your Haedong Water Clock.

I...

told him that you're just
making these things as a hobby.

Is it Lord Ha Yeon?

No.

Then...

is it Jeong Chi Soo's group?

Is that really important to you?

Right.

He said this, too.

"Jang Hee Je's knowledge in
science is not that threatening."

"People have told me
that Jang Hee Je is..."

"not as wise and bright as
that servant, Yeong Sil."

Why do you make your life so
much harder than it has to be?

Just focus on studying Neo-Confucianism...

and use your studious brain
to become a prime minister.

I'm giving you this advice...

as your caring childhood friend.

I need to burn Yeong Sil's
new water clock to ashes...

for the silver coins he paid me.

After that,

I will kill Yeong Sil.

Tell me.

Why are you...

so obsessed with killing Yeong Sil?

Do you really not know?

I didn't hate him from the get-go.

When we were young, you taught me...

how to tease and make fun of
servants, including Yeong Sil.

You've grown into an indecisive,
precarious and confused nobleman.

But I've grown...

to despise every single thing
that Jang Yeong Sil does.

And now,

he's like a fishbone in my throat.

That is how it all began,

but we've come way too far to return.

If people hear this,

they will think it is ridiculous.

But things cannot go back to how they were.

They absolutely can't.

Isn't it hilarious?

The weather is very cold these days.

I put plenty of cotton wool,
so it will keep you warm.

No matter what you do, don't
push yourself too hard.

So you're saying that Yeong
Sil was here last night,

and he wasn't working on anything.

No, no.

There is no way.

This isn't the place.

You've been fooled by Yeong Sil.

This is not where he is making his clock!

Go and find out where it is!

Jang Yeong Sil.

How dare he deceive me!

Fire now!

Now, 1, 2!

Is everything going well?

- Yes, Lord!
- Yes, Lord!

This is amazing.

- Ouch, it's hot!
- Is it?

These cannons will be sent
to the border area...

to be used for protecting the border.

I invented them.

This is truly impressive.

Is there anything that
you can't do, my lord?

You're a civil officer as
well as a military officer.

You also made the metal printing type.

You're even making cannons now.

Yes.

That is why the King puts
so much on my plate.

I'm worried about being
sent to the border area...

as a military official at this old age.

I'm noticing more strands
of white hair these days.

You always had white hair.

I have a lot more of them now.

I see. Okay, okay.

Yeong Sil.

I brought you here because...

I wanted to show you that we
need an accurate clock...

for these cannons to function properly.

Well, what do cannons have
anything to do with clocks?

To fight enemies,

it is crucial that our soldiers
move at promised times.

If they have clocks that
tell the time differently,

they will not be able to fight effectively.

If I end up going to the border area...

to fight the Jurchens,

I will definitely need an accurate clock.

My goodness.

If you have to go to the
border area at that age,

you will end up with even
more strands of white hair.

I see.

In addition to helping the
people's daily lives,

clocks can also be used to aid the
military and national defence.

This one must be convenient to use.

That is correct.

It would be truly amazing...

if the clock could be used
even during riding a horse.

I see. I will make sure to
make the clock you need.

Yeong Sil. The King is...

also thinking that you're
probably working on...

making a water clock using a
new method at the moment.

I knew that you'd know.

You have to work on making the
self-striking clock in secret...

because I couldn't protect you.

I am sorry.

I will show it to you when it is completed.

Please give me some time.

Of course.

The day that I can show you
everything will arrive soon.

For now, please think that I'm
not working on anything...

and pretend that you know nothing.

My lord. You know that I excel
in two things, enduring whips...

and the studies of science.

Now, I can add one more thing to the list.

What?

What is it?

I can tell right away if
someone is shadowing me.

It is almost as if I have
eyes on the back of my head.

If I think that it is
someone trying to harm me,

I can give him the slip easily,

so please don't worry.

Sir Lee!

Do you know me?

How would I not know you?

I pursue astronomy as well.

I've seen you from afar.

Everyone said that you're a maths genius.

I heard you calculated the altitude
of the North Pole correctly.

"Sir Lee might come to see me one day."

I've been thinking about the possibility.

And you're really here.

I, too, have been very curious
about what kind of person you are.

So you predicted that I'd come to see you?

I guess we were on the same wavelength.

I heard you're helping Officer Jang.

I am.

He came to me one day to
invite me to work with him.

He's a great man from whom
I can learn a lot from.

- He is.
- I heard that...

you said the armillary sphere won't spin.

"How would he know?"

"He seems to be doing nothing himself."

But you aren't...

the kind of person who
wouldn't do anything.

I wanted to see what you had hidden.

I'm not saying I'm here to spy on you.

I'm just...

curious.

And I ended up here.

Are the rings...

spinning separately?

No.

To be honest,

the more I study it, the
more I think they won't.

I don't think...

the gears alone will provide
enough power for that.

I haven't made one myself,

but whichever way I think,

there is no way to make the
rings turn separately.

I know nothing about machinery.

I'm only good at maths.

Do you really want to know...

what I am making?

Pardon?

Of course I am.

Why else would I have...

followed you here?

I'll show it to you.

Will you really?

Come in.

What on earth is this?

Is this a clock?

Hello, Sir.

Who is he?

This man is...

someone who can help us.

What are all these?

- They're...
- No, no.

Don't tell me.

Let me guess.

Where did you find this fool?

I don't know.

Very little separates a genius from a fool.

This must be what makes the
dolls beat the drum and gong,

but I don't see any wheels.

Where did you hide them?

You said you'd show me.

What you see is what there is.

It can't be.

There are no cogwheels or gears.

What are these?

How can you make a clock...

with these toys?

Where is the power source?

You're holding it.

What?

These iron balls?

How can iron balls power...

Do...

these balls...

fall down those pipes,

hit the spoons,

and that's...

what makes...

the dolls move?

You do have a quick mind.

That's impossible.

You used brass because...

Cogwheels wear away,

which is why they aren't
suitable pieces for a clock.

Pieces of the Haedong Water
Clock will wear away,

making it tell the wrong time.

Is that why instead of wood...

Yes.

The important parts...

are all made of brass.

Even then,

how can this small ball
create enough power?

That is the core principle
behind my new clock.

Watch very carefully...

and see how the ball does the job.

- Kang Chun.
- Yes?

Send a ball down...

and ring the bell.

Okay.

The bell.

It rang.

Roll another one.

The ball falls down the
pipe and tilts a spoon...

that moves the doll's arm
to make it ring the bell.

The drum and gong must tell...

the hour and minutes.

Correct.

Will you see it work?

One drum and one gong for 7pm.

Okay.

One drum and two gongs.

(One drum, two gongs is 7:24pm)

No drumbeat.

Just two gongs.

Then 24 minutes later...

Still no drumbeat. Just three gongs.

Then...

at the following hour,

will there be 2 drumbeats and 1 gong?

At 11pm, it would ring 3
drumbeats and 1 gong.

- Right?
- Yes.

The drum beats only once per cycle.

The gong signals the
following four intervals...

by ringing 2, 3, 4 and 5 times.

I see.

The ball signalling the start of a cycle...

does two things.

It rings the drum and the
gong at the same time.

Oh, I see.

It touches this spoon to beat the drum,

then it passes through here
to enter the gong pipe...

and touches this spoon
to ring the gong once.

Then it stops here.

Then at the start of the second cycle,

it touches two spoons in turn to...

beat the drum twice.

Then it goes to the right
to touch the spoon...

to ring the gong once,

then it stops.

Yes.

How did you...

make it so that...

it beats the drum...

multiples times?

Would you like to figure it out?

No.

I helped Officer Jang make
the Haedong Water Clock,

but I really don't get this.

How does it work?

What makes some balls go to the right...

and some go straight down?

It doesn't make sense.

It's magic.

It's not magic.

The secret is in...

the ball's sacrifice.

"Sacrifice"?

Yes.

The iron ball touches the spoon,
goes to the right, then stops here.

At the same time, it
opens up another route.

The next iron ball is able to pass through,

triggering two spoons to make
the doll beat the drum twice.

Once it does that, it
locks itself in the pipe,

opening up the next section.

Then on the second, third, fourth
and fifth intervals of each cycle,

the ball goes straight into the pipe
under the doll that rings the gong.

And using the same principle,
it sacrifices itself so...

the next ball...

can do its duty.

Yes. You got it.

It's amazing.

Instead of using dozens of dolls
as Su Song did on his clock,

or Officer Jang on his,

you focused on automated time alerts.

Without wheels or gears.

Just with the force of these rolling balls.

I can't believe you made a clock
that works with iron balls.

I see 12 dolls which means...

you divided a day into 12.

How does this work?

Don't tell me...

this uses iron balls, too.

Of course it does.

This wooden beam is the secret.

The ball that triggered
the bell hits this beam,

and pushes up...

the figure for that hour.

That tells you what hour it is.

I see.

Now I get that.

But how do you make it push
up the figure next to it?

That's where I'm stuck.

But I will figure it out soon.

Show it to me then.

This is amazing already.

This...

This is just impossible.

But I'm looking at a working model.

How come...

Thank you...

for letting me see this.

Where did you get the idea?

Two scholars who worked
with me at the observatory,

Park Hyo Won and Lim Myung Deok...

were killed by those who
were against what we did.

They died...

and I lived.

I wandered,

and then decided to die myself,

so I laid beneath a tree.

A persimmon hit me on the forehead.

That instant,

I gave up wanting to die.

All I could think about
was the force that...

made that fruit fall.

Since there is no need to create power,

I thought this clock...

wouldn't cause any strife.

All I can say is that...

you were born to do this.

If you had this idea when you
were contemplating death...

(Volume: 3.05cm³, weight: 16g)

(Volume: 65.41cm³, weight: 534g)

I think...

the volume and weight of
each ball must be important.

I believe...

my two dead colleagues sent you to help me.

I asked them every day in my mind...

how big and heavy the balls should be.

And what they should be made of so
that they don't wear out easily...

and make my clock accurate.

That is when you appeared.

- Will you...
- I'll calculate...

the size of the balls.

I will do it.

Please let me.

Yeong Sil.

You have more people to
look after now, don't you?

I think I should make...

many more jackets, then.

900 and...

70...

The width is...

What if I'm actually a traitor...

and I end up revealing...

where your secret workshop is?

Why did you bring me here?

I know you wouldn't do such a thing.

You will follow in Lim and
Park's footsteps and...

become a great scholar for Joseon.

I let you into my workshop
because I wanted you...

to see something new.

I think that those...

who love and appreciate...

maths and science are pure
and passionate inside.

If Officer Jang wishes to
see this, bring him along.

You were impressed when
you saw my water clock.

I believe...

Officer Jang...

will appreciate this too.

And it will make him happy.

Right.

I have a question for you.

The force that works on a moving object.

Can it be determined?

Lim and Park said that...

we can only calculate the
average speed of a planet...

and not the exact number.

The average speed.

Yes.

This is it.

Here you go.

Officer Jang.

The armillary sphere's rings
cannot spin separately.

Why not?

You said it was mathematically possible.

We confirmed the calculations.

The problem is that...

these rings continue to
spin without stopping.

We calculated that we need 1.62
litres of water to work...

the celestial globe and chimes,

and 0.18 litres...

to spin the rings on the armillary sphere.

Yes.

We said we could even out the
force to make the rest work.

It looks right on paper,

but not in reality.

Why not? Explain in detail.

Because the 1.62 litres we came up with...

is the average amount of water needed...

to spin the rings.

We need an accurate calculation
for each of the rings,

not an average number for
all of them as a whole.

But what we need is almost
impossible to calculate.

It's like calculating how
planets move in the sky.

However detailed the calculation is,

any number you get...

is just the average of the
movement of each planet.

Are you saying there's a limit to
describing nature with numbers?

It's possible to use numbers,
but nothing ever stops,

so you can't put one absolute
number on everything.

So mathematically it must work,

but it won't in reality.

But that is natural?

Must the rings spin separately?

I think a clock should just
be able to tell the time.

Yours works perfectly.

You can use a cogwheel to
make the rings spin together.

That is not my goal.

The clock I want to make...

is the one with rings that spin separately!

Sir Jang knew that many issues
that can't be solved with maths...

would occur with this project.

That's why...

he said the rings wouldn't spin separately.

I actually met him.

You met Yeong Sil?

Yes.

I saw the incredible clock he made.

He took you to...

where he's making a water clock?

He said I could come back with you.

With me?

Yes.

What for?

He's making it in secret.

He said the clock would make you happy.

I urge you to go.

Sir Jang's clock...

is so innovative, there
never has been one like it.

How?

How is it innovative?

He uses free fall.

Do you expect me to cheer when
I see the clock you made?

You never stop taunting me,

Yeong Sil.

Go and have a look at his clock.

See how it works,

and what it looks like.

I told you exactly how I
feel about Yeong Sil.

Hearing you say that...

hurts my feelings.

You said you would tell me your wish.

I have one also.

It is for you and Yeong Sil...

to work together...

to create a better Joseon.

When I heard that Yeong Sil had
died when the observatory burned,

it felt as if the possibility of
realising my dream was crushed.

Now he's back,

and he has become a great man who
does not need anyone's pity.

It saddened me,

but I was also pleased
that he had returned.

Even more so because he had grown since.

You are the one who let him live.

I had to return the favour.

You shine bright, and you will
light the future of Joseon.

I'm sad to see the clouds around you.

I wanted to help clear the clouds.

All that is left...

is for you to free yourself
from the shadow of Yeong Sil.

I see your light,

but you do not.

I hope that one day you will see it.

I'm sure that...

our King wishes that from you, too.

I'm glad you're here.

This is the map to Sir
Jang's Dongdaemun workshop.

You will see...

some amazing things there.

Very well.

Officer Jang.

What has you so focused?

It's nothing.

Come with me to a village in Namyang.

I found out where Yeong Sil used to live.

I might be able to find
his secret workshop.

I lost interest in him.

You can go alone.

Are you...

pretending to be a gentleman now?

Bye.

Oh dear.

Yeong Sil.

Are you going somewhere?

To the workshop.

At this time of night?

What's this?

What have you made?

Free fall.

What is falling?

I can't tell.

There's no waterwheel,

cogwheels or gears.

He didn't take anything
from Su Song's design.

How is this thing powered,

and what makes the dolls
ring the bell and gong?

How does this work?

These iron balls?

That's impossible.

Why am I hiding?

(Jang Yeong Sil)

Sir.

Take Hak Joo.

I shall inform the
authorities of your crime.

I'm sorry.

Forgive your cowardly master.

Officer Jang left.

You can stay with me until...

your master returns.

How about we call your
new clock "Jagyeokru"?

What are you doing?

People keep touching the centrepiece.

The public cannot be
allowed to have a clock.

Time belongs to the King.