The college entrance examination immigrants were proposed by that province. When did it come up?

"College Entrance Examination Migration" is a special phenomenon in China's higher education. Because China has a vast territory and a large number of candidates, there is a big gap in education level among different regions, so the policy of marking college entrance examination papers and delineating admission scores in various provinces, municipalities and autonomous regions is implemented. Some candidates take advantage of the differences in scores and admission rates of college entrance examinations in different places, and go to areas with relatively low scores and high admission rates to take exams by transferring schools or accounts, which is called "college entrance examination immigrants". Generally speaking, the migration areas of college entrance examination immigrants are divided into three categories: first, municipalities directly under the central government with high economic level and low college entrance examination scores; second, eastern provinces with low economic level and low college entrance examination scores, such as Hainan and Anhui; and third, western regions with high altitude, low economic and cultural level and low college entrance examination scores, including northwest and southwest provinces. Since China resumed the college entrance examination system, the phenomenon of college entrance examination immigration has intensified. The Ministry of Education and the provincial recruitment offices have also taken various measures to curb the phenomenon of college entrance examination immigration, but the effect is limited.