Shenzhen

In 1980, the Chinese government designated Shenzhen the country's first Special Economic Zone — a testing ground for market-oriented reforms and foreign investment, chosen specifically for its position directly across the border from Hong Kong. The policy shift triggered an urbanisation unlike anything else in modern history: a settlement of roughly thirty thousand people grew into a city of over ten million within about four decades, with skyscrapers, subway lines and entire districts built essentially from scratch on what had been farmland and fishing villages. Understanding that single policy decision explains almost everything else about how the city looks and functions today — there simply wasn't time to grow organically the way older Chinese cities did.

Shenzhen's tech reputation runs well beyond the Hua Qiang Bei electronics market it's best known for among visitors. Tencent, the company behind WeChat, is headquartered here, as is DJI, the world's dominant consumer-drone manufacturer, alongside major telecommunications and hardware firms with roots in the city's SEZ-era growth. The corporate campuses of Nanshan district, in the city's southwest, have earned Shenzhen comparisons to Silicon Valley — comparisons the city's own tourism material leans into, though the density and speed of Shenzhen's build-out has no real American equivalent.

Shenzhen's proximity to Hong Kong is a defining, everyday fact of the city rather than a footnote — several border crossings link the two, handling enormous daily traffic of commuters, shoppers and travellers moving between mainland China and the special administrative region. The Luohu and Futian crossings connect directly to Hong Kong's own rail network, making a same-day trip between the two cities entirely routine for residents on both sides, and a genuinely useful option for visitors basing in one city who want to see the other without repacking a bag.