Parents watch "gaokao" candidates walk into an exam site of the national college entrance exam at Guangming Middle School in Shizuishan City, northwest China's Ningxia Hui Autonomous Region, 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/Peng Zhaozhi)