Complex sentence: The children being imbursed are not only from the plain area but also extended to the mountain area of Yongning county, the education level cover primary school, high school and university, and the nation cover Mosuo, Yi, Zhuang, Pumi and so on.
Split into simpler sentences: The children being helped are not only from the plain area but also extended to the mountain area of Yongning county. The education levels cover primary school, high school and university, and the nation cover Mosuo, Yi, Zhuang, Pumi and so on.