Jingyuan. Jingyuan No.4 Middle School is a public senior high school, which enrolled students in the autumn of 2006. It is located in Jingyuan County, Baiyin City, Gansu Province. The school covers an area of 150 mu, bordering Ulan in the south. Ma Jun, the headmaster of this school, is from Jingyuan, so he is from Jingyuan. Jingyuan County, affiliated to Baiyin City, Gansu Province, is located in the upper reaches of the Yellow River, the central and eastern parts of Gansu Province, the hinterland of Baiyin City, and Pingchuan District of Baiyin City. It divides the county into two parts, forming two parts opposite to the north and the south.