Other analysts say it would be impossible to count the exact number. ‘I doubt they know themselves,’ says Richard Fisher, a senior fellow on Asian military affairs at the Washington-based International Assessment and Strategy Center. Regardless, the number is undoubtedly extraordinary. ‘China can rightly claim to have the world’s largest, most amorphous, but also most active intelligence sector,’ he says.

That’s partly because it operates very differently from most. ‘When you consider that China’s intelligence community views any foreign-deployed Chinese citizen, any Chinese delegation, all Chinese criminal networks, and all overseas Chinese with any tangible affinity or connection to the Motherland as a target for recruitment, then you have to find a different way to measure,’ Fisher explains. ‘This has to start with the consideration that any Chinese, especially those from China, from student to CEO, are potential active intelligence assets.’

Other analysts echo his concerns, and a simple fact: the regime’s spies are increasingly active across the globe. Since 2008, more and more intelligence-training colleges—‘spy schools’—have been popping up at universities across the country. Meanwhile, Chinese satellite-reconnaissance and cyber espionage capabilities are expanding at an unprecedented speed.

Officials are, probably for good reason, skittish when discussing China and its intelligence collection operations. But there’s near unanimous agreement—and court convictions in countries around the globe support the premise—that, in terms of sophistication, scope, and international capabilities, the perils of Chinese espionage are on the rise.