More than 13 million anxious students in China filled exam rooms this year to sit the notoriously challenging gaokao.

The two-day exam determines whether students can secure a place at university, and teens spend years studying for the big test.

But students this year faced more than just academic pressure, as those taking the university entrance exams had to deal with some of the most extreme anti-cheating methods yet.

Facial recognition technology, metal detectors, drones and phone signal blockers were regularly used in schools this year amid the Chinese government's latest attempt to clamp down on cheats.

AI firms have also been involved in the government's latest efforts to curb cheating.