a gleaming monument to China's economic miracle.

In 1980 it was a town with around 60,000 residents.

Now it's China's technological hub, with a population of over 12 million.

Entrepreneurs, high-flying tech graduates and international companies flock here to

join the tech revolution.

Welcome to Shenzhen

Shenzhen sits north of Hong Kong in the

Pearl River Delta.

One of the most densely urbanised regions in the world.

The area has an estimated population of 120 million people

In 1980 Shenzhen was dedicated a Free Economic Zone - an experiment in market capitalism

in Communist China.

The effects were explosive. Shenzhen's population skyrocketed in just over 30 years.

The city has a massive migrant workforce. Over 4 million residents staying during the

week and then returning home on the weekend.

But, it's tech hardware that has put this city on the map.

If Silicon Valley dreams it up, then this is where it's made.

This is Huaqiangbei market - arguably the world's largest electronics market.

Filming here is banned…..

but here's a sneaky peak.

The market's neon lit corridors stretch across multiple buildings and many floors.

The stalls sell everything from the latest gadgets, to the tiniest screws and many items

are rips off, Chinese fakes of US products.

But if you wanted to, you could buy all you need to build your own smartphone, or 100,000 of them

Because Shenzhen draws in workers from across China, its foods scene is just as varied as

its population.

If you're looking for the full banquet experience,

Shang Palace in the Shangri-La Hotel has got you covered.

Their Dim Sum lunch is a feast for the eyes and the mouth.

It's a showcases of authentic Cantonese cuisine.

Or try something a little more casual, such as Chinese Hot Pot.

A simmering pot of soup stock is kept on your table

and you put your choice of ingredients in.

One of the most famous variations is flavoured which Sichuan pepper

so watch out, it can pack a serious spicy punch.

When you get the bill you'll notice QR codes.

Here in Shenzhen they're used by locals to pay for just about everything.

Simply scan the code and the money is transferred. Sound great but there's a hitch.

You can't use them unless you have a Chinese bank account.

So a technology to make life easier only works if you're a local.

Finally, why not enjoy some sport...

Shenzhen style.

This is Robomaster. A competition put on by local drone and tech company DJI.

Students teams from around the world compete

using a variety of self made robots to shoot each other and destroy the opposition base.

The competition aims to foster engineering and programming and keep Shenzhen at the

forefront of the tech revolution.