Born in the village of Hòa Hảo, near Châu Đốc, Vietnam, French Indochina, in 1920, Sổ was the son of a moderately wealthy peasant.
Lahir di desa Hòa Hảo, dekat Châu Đốc, Vietnam, Indochina Prancis pada 1920, Sổ merupakan putra dari petani kaya yang moderat.