BEIJING, CHINA - JULY 18: (CHINA OUT) Students throw their mortar boards into the air as they graduate during a ceremony held at the Tsinghua University on July 18, 2007 in Beijing, China. China faces a major challenge in meeting its goal of creating nine million jobs this year, according to Tian Chengping, Minister of Labour and Social Security. Approximately five million college graduates, the largest number in history, will enter the job market this year, in addition to surplus rural labourers swarming into cities for work. (Photo by China Photos/Getty Images)