"Gaokao" candidates queue to enter an exam classroom of the national college entrance exam at Jiangdu High School in Yangzhou, 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/Yu Xing)