Naming of moons underworld, and Nix (a respelling of Nyx), mother of Charon, is the goddess of darkness and the night. Kerberos is a giant three-headed dog who guards the entrance to the underworld. The fifth moon is named for the river Styx that forms the boundary between the worlds of the living and the dead. The name of Eris's moon Dysnomia was suggested by its discoverer Michael E. Brown, who also suggested the name of the dwarf planet. The name has two meanings: in mythology Dysnomia (lawlessness) is the daughter of Eris (chaos). However, the name is also an intentional reference to
Rebellion of the Three Guards Prince Wu Geng. The Three Guards' main force was also defeated, and Guanshu Xian and Huoshu Chu were captured, while Caishu Du fled into exile or was banished. Guanshu was executed and Huoshu stripped of his titles and demoted to a commoner. Despite his victory, Duke of Zhou pressed on and further campaigned against the eastern rebel allies that were located beyond the Zhou kingdom's borders. Shortly after the Three Guards' defeat, the loyalists advanced into Shandong, with Duke of Zhou personally commanding the conquest of Feng and Pugu. Yan was also attacked by loyalist forces, but managed to hold