Parents wait outside an exam site of the national college entrance exam at Hefei No. 11 High School in Hefei, capital of east China's Anhui 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/Du Yu)