Nearly 13 million students are taking the "gaokao" this year, 980,000 more than last year. Phone operators have warned by text message: some exam centers will jam 5G to avoid cheating.

In 2020, a smartphone cheater was sentenced to three years in prison. Public security and education authorities on Monday launched a "zero tolerance for exam-related crimes" campaign. In some localities, security checks have been tightened with the installation of facial recognition systems and candidates are advised not to wear jewelry to ensure fairness.