Before marching north against the Qing, Nguyễn Huệ proclaims himself emperor at Phú Xuân with the era name Quang Trung.
Emperor Quang Trung routs the Qing army during the Lunar New Year and liberates Thăng Long.
Nguyễn Huệ destroys a Siamese army, invited by Nguyễn Ánh, on the Mekong (Tiền River).
Emperor Quang Trung dies suddenly; the Tây Sơn dynasty declines rapidly afterwards.
Rama I founds the Chakri dynasty and moves the capital to Bangkok; the dynasty still reigns in Thailand today.
Nguyễn Ánh defeats the Tây Sơn and takes the throne as Emperor Gia Long, founding Vietnam's last imperial dynasty.
Emperor Gia Long adopts the name Việt Nam for the country, with Qing approval.