The annual college entrance examination kicked off on June 6. Papers for the high school examination must have the qualification of printing Grade A state secret carriers jointly issued by the Ministry of Education and the State Secrets Bureau.
Prison printing houses that meet the confidentiality requirements for the printing of examination papers after examination may be issued a "State Secret Carrier Reproduction Permit" with a limited scope of permission. Each workshop is equipped with a complete access control, monitoring, and anti-theft system. 24-hour security personnel are on duty in shifts, but even sewers will be installed with protective nets.