Shenzhen was a fishing village with less than 30,000 residents 40 years ago¹.

Fast forward to 2019 and it is home to 12 million people², boasts some of China's most innovative companies, and has an economy larger than many of the world's most developed countries.

Source: IMF, World Cities Culture Forum, 2019

Note: GDP numbers refer to 2018 and are represented on a purchasing-power-parity basis.

Within this transition lies a story, and its one that is a smaller scale version of China's boom during the past 40 years.

That's because during the period, Shenzhen has seen low-cost, labor-intensive manufacturing fall and rise; rapid urbanization; expansion in the real estate sector; and a transition to an economic model driven by high-end manufacturing, services and consumer demand.

Shenzhen's success is partly because of its location.

27.4km from the centre of Hong Kong³, Shenzhen's proximity to Asia's largest international finance and commerce hub has made it an entry point into China for foreign investment and intellectual capital, and an exit point for China's wide range of evolving exports.

But it is also to do with policy. A focal point of Deng Xiaoping's pivotal market reforms from the late 1970s, Shenzhen has always been a testing ground for other market reforms, such as China's first special economic zone in 1980, deregulation of foreign investment controls, and opening of urban residency rules.

And as China steps up its efforts to address climate change with sustainability policies to meet its lofty commitments to the Paris Agreement on Climate Change, Shenzhen is taking the lead as a testing ground for a raft of climate- friendly, sustainable development policies that will be rolled out more widely across China.

These include:

• Developing electric vehicles: Generous subsidies, large investments, and innovation by local industry leaders, like BYD, mean Shenzhen has become the center of China's electric vehicle industry, with one unit being produced every 90 seconds at a leading manufacturer in the city⁴. But it's not just about building the cars, the city government has built the infrastructure too, adding 8,000 streetlight poles that also double as charging stations for electric cars in recent years⁵.
• Establishing low-emissions electric buses and taxis: Shenzhen became the first city in the world to fully electrify its public bus fleet, running an estimated 16,000 electric buses⁶. And fully-electric taxis are on the way too; 62.5% of the city's taxis were electric in 2018, and the goal is to make it 100% by 2020⁷. Progress with electric buses and taxis is potentially one reason why Shenzhen's air pollution levels have slowly reduced between 2015 and 2019.
• Closing down polluting factories: local authorities in Shenzhen mounted an aggressive attack on labor- and resource-intensive industries as part of a campaign against pollution. Policy measures included raising prices for inputs like water and electricity, forcing minimum wages higher, and imposing new regulations to weed out old, polluting industries.

Source: CEIC Data, April 2019

Note:
1. Data quoted in the graph are based on readings from government agencies in Shenzhen, not independent sources

2. Fine particulate matter (PM 2.5) is an air pollutant. The term particulate matter 2.5 (PM 2.5), refers to tiny particles or droplets in the air that are two and one half microns or less in width. Like inches, meters and miles, a micron is a unit of measurement for distance. 

• Regenerating urban areas: Shenzhen has aggressively introduced urban regeneration projects to modernize old industrial spaces and abandoned residential buildings in a bid to expand the property stock in a more sustainable way⁸. Sustained, rapid urbanization had generated record real estate prices in Shenzhen and put pressure on scarce land resources within the city⁹.
• Supporting start-ups and innovative industries with tax breaks and talent policies: the Shenzhen city government is actively supporting new businesses in high tech sectors, as well as universities and research institutes, with subsidies, investment in R&D, eased visa policies for foreign experts, and incentive schemes for overseas-educated Chinese¹⁰.