Long Khánh
Because of Prince Cung Tuyên's essential role in helping the Emperor to take over the power, Nghệ Tông decided to cede the throne to his younger brother, now Trần Duệ Tông in 1373 and held the title Retired Emperor. After the coronation, Duệ Tông changed the era name to Long Khánh (隆慶, great joy, 1373–1377).