The examination papers in all parts of the country are not completely consistent. In 2003, Ge Jun's math problem in Jiangsu College Entrance Examination directly killed 520,000 candidates in Jiangsu. Reduce the online score of Jiangsu by 50-60 points. The network is called "the emperor of mathematics".

Until 202 1, there was no unified volume in all regions. Most provinces use national volumes, including one national volume, two national volumes and three national volumes. But some provinces like Jiangsu still use local volumes.