"Gaokao" candidates walk into an exam site of the national college entrance exam at High School Affiliated to Nanjing Normal University in Nanjing, capital of east China's Jiangsu Province, June 7, 2014. The exam, known as the "gaokao", began on Saturday. A total of 9.39 million people have registered for the exam this year to vie for 6.98 million vacancies in universities and colleges. (Xinhua/Dong Jinlin)