After passing through multiple checkpoints, including facial recognition, fingerprint verification and a metal detector, students will finally be granted access, not to a bank vault, but to a radio-shielded room where they will take the national college entrance exam.

Chinese authorities are imposing strict measures to prevent cheating in this year's test - known as the gaokao - and those who cheat could get three to seven years in prison.

The anti-cheating measures also include the printing and transportation of test papers and the selection of exam supervisors.