Many high school students faced with piles of homework found a solution as their summer vacations are coming to an end - they are hiring ghostwriters, especially university students.

"It costs about 30 yuan ($4.7) to finish a set of assignments for a senior high school student," said a junior at China Agricultural University, who only gave his name as You. "We have a team of three members covering different subjects. So we're able to finish all their homework, whether it's math or English."

He said they stayed at the university during the summer holiday.