The ousted Ngô Xương Ngập fled to Trà Hưong village, Nam Sách, and was hidden under the protection of his retainer, Phạm Lệnh Công.
[1][2] In 950, Dương Tam Kha was dethroned by Ngập's younger brother, Prince Ngô Xương Văn in a counter coup d'état.
[1] It was called Một nước, Hai vua ("one country, two kings") in Vietnamese history.
However, the returned Ngập managed to overtake his younger brother's authority by reclaiming himself as the rightful crown prince where he gained support from leading court officials.
Ngô Xương Ngập became the de facto ruler and held the real power and relegated his brother Văn as a nominal co-ruler who held mainly ceremonial duties and abstained from active political affairs or military campaigns until Ngập's death in 954.