当时中原地区部落联盟领袖尧已年老，经过慎重考察，选择舜为继承人，四岳十二牧（部落领袖）同意，尧将部落联盟领袖职务传位给舜。
At that time , Yao , the chief of the tribal alliance on the central plain , was old , and he selected Shun as his successor after a careful observation . With the consent of all chieftains , Shun was placed to the throne .
十二牧