Ngô Sĩ Liên
The exact dates of Ngô Sĩ Liên's birth and date are unknown but it was said that he was born in the Đan Sĩ village, Hà Đông, Hanoi. In his youth, Ngô Sĩ Liên participated in the Lam Sơn uprising of Lê Lợi that led to the retreat of the Ming Dynasty and the foundation of the Lê Dynasty in Vietnam. In the 1442 imperial examination under the rule of Lê Thái Tông, Ngô Sĩ Liên gained the title Doctorate ("Tiến sĩ") and thus became an official in the royal court of three successive emperors Lê Thái Tông (1434–1442), Lê Nhân Tông (1442–1459) and Lê Thánh Tông (1460–1497), during the latter's reign, Ngô Sĩ Liên was appointed Director of the National Bureau for Historical Record ("Viện Quốc sử") in 1473. According to some sources, Ngô Sĩ Liên lived up to the age of 99, therefore he was likely born around 1400 and died during the late period of Lê Thánh Tông's reign. Ngô Sĩ Liên was born and grew up during a turbulent period of Vietnam with the collapse of the Trần Dynasty, the Fourth Chinese domination by the Ming Dynasty, the Lam Sơn uprising, the coronation of Lê Lợi and several struggles in the royal family of the Lê Dynasty. Besides, Ngô Sĩ Liên also witnessed the gradual predomination of the Confucianism over the Buddhism in the royal court, especially during the reign of Lê Thánh Tông, it was the context in which Ngô Sĩ Liên wrote his "Đại Việt sử ký toàn thư".