Title: Tam hùng tranh thiên hạ
Description: Three brothers Nguyễn Nhạc, Nguyễn Huệ, Nguyễn Lữ and their people stand up to fight back the invaders from north and south.
Subjects: Juvenile literature, History
Places: Vietnam
People: Nhạc Nguyễn King of Vietnam (-1793), Lữ Nguyễn Prince, Quang Trung King of Vietnam (1752-1792)
Time periods: Tây Sơn dynasty, 1788-1802