Innovation course. According to the official account of WeChat in Dongjiao Middle School of Sanyuan County, the innovation class is the best in the school, with good resources and rich teachers' experience. Dong Jiao Middle School in Sanyuan County was founded by the county party committee and government on 1999. It began enrolling students in 2000. At that time, there were five high schools in Sanyuan County, among which Xiyang, Anle and Dong Jiao had relatively weak teachers, a small scale of running schools, and the quality of education and teaching could not be effectively improved, which restricted the balanced development of high school education in the county.