Examinees walk into the entrance of a classroom building to take part in a three-day entrance exam for postgraduate studies, at Anhui University, in Hefei, Anhui province, January 5, 2013. In China, about 1.8 million people this year applied to attend the exam which starts on Saturday. The number of examinees reached a record high in history, according to local media. REUTERS/Stringer 

Parents wait outside a school during the National College Entrance Exam in Hefei, Anhui province, June 8, 2013. According to local media, about 9.12 million students make a start on China's national college entrance exams or "gaokao" from June 7 to 8, which is a fiercely competitive test that is seen as make-or-break for getting ahead. REUTERS/Stringer 

Zheng Dong (L) studies for China's annual national college entrance exam accompanied by his mother, in a hotel room near the Shanghai No.1 High School in Shanghai June 6, 2012. About 9.15 million people will take the exam to vie for 6.85 million vacancies in the country's universities and colleges, said China's education ministry, according to Xinhua News Agency. Zheng Dong and his mother rented a hotel room near the school where Zheng will stay and study during the exam. Picture taken June 6, 2012. REUTERS/Carlos Barria (CHINA - Tags: SOCIETY EDUCATION) 

Students have evening self-study class in a teaching building in Hefei, Anhui Province June 2, 2012. The National College Entrance Exam, or "Gaokao", is held in June every year. Picture taken June 2, 2012. REUTERS/Stringer 

A student takes a nap on a desk during his lunch break in a classroom in Hefei, Anhui Province June 2, 2012. The National College Entrance Exam, or "Gaokao", is held in June every year. Picture taken June 2, 2012. REUTERS/Stringer 

Parents wait for their children outside a school during the second day of the National College Entrance Exams known as "gaokao", in Shanghai June 8, 2011. About 9.33 million students make a start on China's national college entrance exams, a fiercely competitive test that is seen as make-or-break for getting ahead, Xinhua News Agency reported. REUTERS/Aly Song 

A teacher checks the names of the examinees before the National College Entrance Exams in Hefei, east China's Anhui province June 7, 2007. Millions of students across China picked up their pens on Thursday to start national university entrance exams amid concerns about sweltering temperatures and high-tech cheating. Picture taken June 7, 2007. REUTERS/Jianan Yu