Long-Thành was born in 1975. Long-Thành's father is Đào and his mother is Kiêm Huê Nguyễn. His paternal grandfather is Mai and his paternal grandmother was Nguyệt Nguyễn thị. He has two brothers and a sister, named Long-Giang, Long Đạt and Thủy-Tiên. He is the second youngest of the four children.