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Transcript
00:00In most cities, the ground floor is zero.
00:03Here, the ground floor might be the roof of another world.
00:07They said it was impossible to build a city here.
00:11They were wrong.
00:12They looked at these raging rivers and vertical mountains,
00:16and they said it was impossible to build a city here.
00:19Step one, the stilt.
00:22Every structure begins with a wooden leg in the mud.
00:27The city's secret.
00:281.5 million square meters of tunnels for foundations.
00:34The machines arrive.
00:36The era of hand labor ends.
00:40Surveying.
00:41If you hit a hidden cave while building, the skyscraper sinks.
00:46This bit ate 100 meters of limestone a day.
00:50Reinforcement.
00:51Before you go up, you must lock the mountain in place.
00:58The crane.
00:59The most important tool in the 8D kit.
01:02Without it, the city stops at the cliff's edge.
01:05High-altitude winds can snap a crane in half.
01:09The skeleton.
01:10Steel gives the concrete its flexible strength.
01:14Without this cage, the stone would shatter.
01:16We are 50 meters below the river level right now.
01:20To build a tower that touches the clouds, we have to start in the deep dark.
01:25Efficiency.
01:26In 1982, we perfected the slip form.
01:30Now, the building doesn't wait for the concrete to dry.
01:33The humel cost.
01:34Long before advanced harnesses, the Spider-Men of the Yangtze built this city with nothing but hemp rope and iron
01:40will.
01:41Hydraulics.
01:42Defying gravity with sheer pressure.
01:44We no longer carry the stone.
01:47We pump it into the sky.
01:49Precision.
01:50In the 8D world, a one centimeter error at the base becomes a one meter disaster at the top.
01:57The city's true strength is invisible.
02:00In Chongqing, the foundations are often deeper than the buildings are tall.
02:051992.
02:07No one had ever spanned a kilometer here without a center pillar.
02:11Step two, dry the river.
02:14Build a wall and dig.
02:22The mole.
02:24Carving subways for the next five years.
02:27The link is made.
02:30Chongqing is no longer an island.
02:32Phase two, the labyrinth.
02:35Five levels of altitude.
02:38Every ramp needs its own carved mountain ledge.
02:47Each level must support the weight of the next.
02:51I'm on level three and there's still two stories of road above me.
02:55Precision lifting.
02:57These segments are the row's spine.
03:04Chongqing's heat expands the road.
03:06It needs to breathe.
03:08The highest road in the city.
03:11Level five is complete.
03:13The cerebellum of Chongqing.
03:14Eight directions, 20 ramps.
03:17The bridge between the ground and the sky is finally open.
03:20The spiral.
03:22720 degrees to solve a 40 meter drop.
03:25We can't go through the cliff, so we'll spin our way to the bottom.
03:29The pivot.
03:31This single column is the spine of the entire descent.
03:34Building without supports.
03:37The road holds itself up.
03:44It's like building a roller coaster for commuter cars.
03:47Two full circles just to get home for dinner.
03:50The descent is ready.
03:52Two full circles.
03:55Safety first.
03:57You don't want to fly off this curve.
04:008D geometry in motion.
04:04Step three, the portal.
04:07No land to stop on.
04:13Sealing the mountain to prevent rock falls.
04:21You're on a bridge one second and inside a cliff the next.
04:25In Chongqing, the shortest distance between two points.
04:28Turning night into day.
04:31Inside the rock, we create our own sun.
04:37The mountain is no longer a barrier.
04:40It's a road.
04:44In Chongqing, wasted space is a sin.
04:48The bridge is the foundation for a ten-story building.
04:52Every meter of height is a meter of potential.
04:56A room with a view of the river suspended directly under the highway.
05:01My coffee is vibrating.
05:03There's a traffic jam 40 meters above my head.
05:06Welcome to the world's most industrial living room.
05:09The shadow economy.
05:11In a city this dense, we don't let the darkness go to waste.
05:15Every square meter of concrete is a potential arena.
05:19Here, the city doesn't just pass over you.
05:21It surrounds you.
05:23This is 8D efficiency.
05:25In Chongqing, we don't just build bridges.
05:28We build foundations for lives.
05:32Step 5.
05:33Two worlds on one bridge.
05:36One for the rubber, one for the rail.
05:42The train gets the basement.
05:45The cars get the roof.
05:48The wind from this train is enough to knock you over.
05:51This isn't just a bridge.
05:53It's a high-velocity wind tunnel.
05:55Finishing the dual-purpose structure.
05:58The sky road is ready.
06:01Security on the sky road.
06:03We build the view.
06:05Then we build the protection.
06:06300,000 people cross this structure every day.
06:10Some see the sky.
06:11Others see the steel.
06:12Both get home on time.
06:15The bridge is complete.
06:17A monument to the impossible.
06:20But the road doesn't end here.
06:22Chongqing is too steep for steel.
06:24In a city built on 45-degree slopes, traditional trains are useless.
06:29We need grip.
06:38Building a station inside a living room.
06:40In most cities, this is a conflict.
06:43In Chongqing, it's the only logical conclusion.
06:46Decoupling the rail from the house.
06:49150 rubber hearts to keep the neighbors from feeling the pulse.
06:54Right now, this is a void.
06:57A hole in someone's home.
06:59Soon, it's a transit artery.
07:03The most famous 20 meters of track in the world.
07:11The damping pads work.
07:13Zero vibration.
07:16How to build a bridge without a crane.
07:20You build a machine that walks across the clouds.
07:230.1 millimeter tolerance.
07:26In a city of mountains, there is no room for error.
07:30Slow down, slow down.
07:31Watch the balcony.
07:33A little more to the left.
07:34Yes, yes, yes.
07:36It's clear now.
07:37Keep going.
07:38The machine walks across the sky.
07:40We are building a road where there is no earth to hold it.
07:45It's three in the morning.
07:47We're suspended by a few bolts and a lot of math.
07:50Yeah.
07:50Down there is the city.
07:52The points are 20 ton concrete slabs moving like silk.
07:56In this ballet, a single millimeter of error is not an option.
08:01The green dragon of Chongqing.
08:03It doesn't fight the mountain.
08:05It flows with it.
08:08The mountain has been conquered.
08:09Not with a tunnel, but with a thread of light.
08:13Now, we go down.
08:1594 meters down.
08:17To build in Chongqing, you don't just climb the sky.
08:20You have to conquer the abyss.
08:23Building a concrete tube 30 stories below ground.
08:27The deepest hole in the city.
08:29A 45-degree canyon carved through solid history to connect the sky to the core.
08:34I can barely see the surface.
08:37We're 94 meters down.
08:40Step two, the vertical commute.
08:41To move thousands of people 30 stories up, we aren't just building stairs.
08:45We're building a mechanical mountain.
08:51That's the pressure.
08:52We just climbed 30 stories in 40 seconds.
08:56Welcome to Hongtudi.
08:58Better call ahead if you're meeting someone.
09:00It takes 10 minutes just to get out of the station.
09:03The vertical subway is complete.
09:06From the clouds to the core, Chongqing is now a 3D grid.
09:11The city is getting a brain.
09:18Step three, the AI takes the wheel.
09:21We're removing the human variable to make room for absolute precision.
09:30No driver.
09:31Just 5G and a lot of faith in the algorithm.
09:34The city is officially driving itself.
09:37The nervous system of the metropolis.
09:40Here, the city doesn't just run.
09:43It thinks.
09:48Next train in 30 seconds.
09:50The pulse of the city never stops.
09:53Phase four, hanging a palace on a cliff.
09:56Before we build up, we have to anchor deep into the mountain's bones.
10:00Step one, the bone.
10:02Steel meets ancient stone.
10:05These anchors are the only thing keeping the palace from sliding into the river.
10:11There are 2,000 of these across this cliff.
10:14This single bolt is holding up a hundred tons of building.
10:18The shelf.
10:19Creating land where there is none.
10:22We are extending the city over the edge of the world.
10:31The foundation is locked.
10:33The cliff is no longer just a rock.
10:36It's a machine.
10:37Ancient tech meets modern steel.
10:40To build a palace of wood on a foundation of iron, we return to the source.
10:45Step two, the art.
10:47No nails.
10:48Just wood on wood.
10:53They're building a palace in the sky with 14th century joints.
10:57It's a paradox.
10:58The skin of the dragon.
11:0050,000 clay tiles.
11:02Fired in ancient kilns.
11:03Modern speed inside an ancient shell.
11:07To make the cliff accessible, we hid a machine in the heart of the timber.
11:12Tongya Cave is born.
11:14A vertical wonder that honors the past while defying the laws of gravity.
11:19It feels like the Ming Dynasty, but we're hanging on steel bolts.
11:23A 600-year-old dream held up by 21st century physics.
11:28Step three, the glow.
11:30To turn this cliff into an icon, we're wiring it with 50,000 points of light.
11:35The computer that turns the cliff into gold.
11:39Every single bulb is a pixel in a 12-story masterpiece.
11:49Look at it.
11:50In this light, the steel and concrete disappear.
11:53This isn't architecture anymore.
11:54It's a 12-story lantern hanging over the river.
12:05The cave gets an upgrade.
12:07Beneath the timber skin, a 5G nervous system now pulses, turning a cliffside village into a smart machine.
12:13The 8D postcard.
12:15In Chongqing, the ground is wherever you happen to be standing.
12:18A train on the roof.
12:20A river in the basement.
12:21In any other city, you take the elevator up to the 11th floor.
12:25In Chongqing, you walk off the sidewalk to get there.
12:29Ground floor is at the top.
12:31Welcome to Chongqing.
12:33The heart of the 8D city.
12:35A building that never sleeps.
12:38Breathing with the rhythm of the river and the pulse of the digital age.
12:42Ready for the big one?
12:43We're going to Raffle City.
12:45Phase 5 starts now.
12:48Phase 5, the horizontal skyscraper.
12:51Before we can build into the clouds, we have to anchor ourselves deep into the heart of the peninsula.
13:01Step 1, the race to the top.
13:04Using self-climbing molds, the towers grow one floor every few days.
13:10We're going up 250 meters, 4 meters per second.
13:14This is how the heart of the city moves now.
13:17Straight up.
13:18The shoulders of the giant.
13:20These beams are the anchors that will eventually catch a 3,000-ton bridge in the sky.
13:25The four pillars are ready.
13:28Four individual towers waiting for the one piece that will turn them into a single organism.
13:34The bridge is waiting below.
13:363,000 tons of steel, 1,000 workers, and four towers.
13:41Step 2, gravity's final stand.
13:453,000 tons of steel currently anchored to the Earth.
13:49It's like watching a mountain being pulled into the sky.
13:52You don't realize how big it is until it takes away the sun.
13:56No stopping until it reaches the 250-meter mark.
14:00Gravity doesn't take a night shift, and neither do the engineers.
14:04The five buildings are now one.
14:06No longer separate towers, but a single, massive organism reaching across the sky.
14:12Step 3, the skin.
14:153,000 panels of curved glass are about to transform this steel spine into a transparent jewel.
14:26The ultimate 8-D thrill.
14:28A window to the world below, held up by nothing but physics and three layers of tempered glass.
14:34It's 10 centimeters thick.
14:39I think I'm safe. Mostly.
14:42A forest in the clouds.
14:45This isn't just a walkway.
14:48It's a living conservatory.
15:02The horizontal skyscraper is complete.
15:05A miracle of engineering that changed the skyline of Chongqing forever.
15:11The city is finished, for now.
15:14But Chongqing never really stops growing.
15:17Let's see what the future holds.
15:23Ground delivery is so 2024.
15:26Why wait in traffic when the sky is wide open?
15:30FutureTech. Frictionless transit.
15:32By 2030, we stopped fighting gravity and started using it to move.
15:38Feeding 30 million people from the sides of skyscrapers.
15:41In 2030, every building is a lung and a pantry.
15:46By 2030, we stopped building passive shells.
15:49Every surface is now a battery, drinking the sun to power the machine below.
15:542,000 years of building on stilts to stay above the floods.
15:58It all led us to this.
16:01Chongqing is the proof that man can live anywhere if he just looks up.
16:06Hit subscribe.
16:08Our next journey starts now.
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