Candidates come to get familiar with their exam site in Xi'an, northwest China's Shaanxi Province, July 6, 2020. This year's gaokao, or the national college entrance exam will start on July 7. (Xinhua/Zhang Bowen)

A member of staff prepares at an exam site in Jiangbei District, southwest China's Chongqing, July 6, 2020. This year's gaokao, or the national college entrance exam will start on July 7. (Xinhua/Tang Yi)

Candidates come to get familiar with their exam site in Changchun, northeast China's Jilin Province, July 6, 2020. This year's gaokao, or the national college entrance exam will start on July 7. (Xinhua/Xu Chang)

A candidate comes to get familiar with her exam site in Changchun, northeast China's Jilin Province, July 6, 2020. This year's gaokao, or the national college entrance exam will start on July 7. (Xinhua/Xu Chang)

Photo taken on July 6, 2020 shows a temperature checking point at an exam site in Changchun, northeast China's Jilin Province. This year's gaokao, or the national college entrance exam will start on July 7. (Xinhua/Xu Chang)

A member of staff prepares at an exam site in Jiangbei District, southwest China's Chongqing, July 6, 2020. This year's gaokao, or the national college entrance exam will start on July 7. (Xinhua/Tang Yi)

A candidate gets his temperature measured before he goes into an exam site in Changchun, northeast China's Jilin Province, July 6, 2020. This year's gaokao, or the national college entrance exam will start on July 7. (Xinhua/Xu Chang)