Đồng Khánh
The following list is the emperors' era names, which have meaning in Chinese and Vietnamese. For example, the first ruler's era name, Gia Long, is the combination of the old names for Saigon (Gia Định) and Hanoi (Thăng Long) to show the new unity of the country; the fourth, Tự Đức, means "Inheritance of Virtues"; the ninth, Đồng Khánh, means "Collective Celebration".