The principals of Danzhou Xilian Central Primary School in Yang Jiangyuan are Yang Jiangyuan, vice president of moral education Lai Kunhai, vice president of teaching Yun Fei and vice president of logistics Zeng Xianghua. The principal, in the Qin and Han Dynasties, was a junior officer, and later evolved into the head of school administration appointed by the national education administrative department or the administrative department of other educational institutions.