Demand in China has begun surging for a business that, in theory, shouldn't exist: the repair of advanced Nvidia artificial intelligence chipsets that the U.S. has banned the export of to its trade and tech rival.

Psst, wanna buy some innovation? An estimated $1 billion worth of smuggled high-end Nvidia AI processors have reportedly found their way onto the Chinese black market, despite the US government's strict restrictions on exports of the tech.