CHINA'S biggest mega-city, home to 32 million people and sprawling ... is a tech powerhouse - but critics say it hides a dark, dystopian underbelly. Earlier this year, nearly 28,000 cameras ...

Nestled among the towering hills of southwestern China lies Chongqing - one of the country's largest and most dystopian cities ... For years, the city has been part of the 'Sharp Eyes' pilot ...