Two. According to the information attached to official website in western Chongqing, there are two 2+4 classes in this school, namely, the innovative experimental class and the parallel class of Mei Qing class. Chongqing Xifu is the abbreviation of the middle school affiliated to Southwest University. It is a national youth campus tennis characteristic school, a national first-aid education pilot school and a curriculum reform experimental school of the Southwest Basic Education Research Center of the Ministry of Education.