Gaokao, which will start on July 7, has been delayed for one month due to the COVID-19 pandemic. (Photos: China Daily)

The school disinfected the environment and buildings in the campus at least once every day.

A teacher goes through the procedures in a rehearsal of the gaokao at Beijing No 12 High School, July 3, 2020.

A teacher installs ultraviolet disinfection lamps in a test room at Beijing No 12 High School, July 3, 2020.

Teachers install ultraviolet disinfection lamps in a test room at Beijing No 12 High School, July 3, 2020.

Disinfecting and protective materials are prepared on a desk outside the test rooms at Beijing No 12 High School, July 3, 2020.