Candidates for the 2021 China Civil Service Examination walk to a testing center Sunday at Nanjing Forestry University in Nanjing, East China’s Jiangsu province.

A candidate takes a photo of a list that shows her exam room.

A candidate scans a QR code to prove he is in good health before entering a testing center at Capital Normal University in Beijing.

A candidate reviews a textbook at a testing center in Nanjing.

Candidates line up outside a testing center in Taiyuan, North China’s Shanxi province.

Candidates leave a testing center at a middle school in Beijing.