Jing Junyu's location: Bo Min, surrounded by rebellions, had always been an enemy of Su Yang, and the war was put down in 305.
Country name: Fujian, Xu Boming is Jing Junyu's father, the emperor of the great country of Fujian, and Jing Junyu is the prince.
Mo Beiyao was a refugee from Su Yang (he was a minister of Su Yang, but he fled to Bo Min in the east because of Su Yang's defeat). His father was killed by Jing Junyu, but Jing Junyu didn't know it and fell in love with Mo Beiyao without any scruples.
Purpose: revenge