Our junior high school mathematics textbook in Chuzhou is from Shanghai Science Publishing House, referred to as Shanghai Science Edition. This version has been used here for more than twenty years. The reason why this version is used is that the arrangement is scientific, the difficulty is moderate, and my teacher has used it for a long time and is very familiar with the teaching materials, which is beneficial to teaching.

Fourth, this publishing house is very supportive of education in Anhui!