Phong was born on April 24th, 1944. Phong's father is Kim and his mother is Hảo Bùi thị. His paternal grandparents were Hãng and Lê Bùi-thị. He has four brothers and four sisters, named Đạt, Tuệ, Sơn, Tiến, HIền, Phúc, An and Thanh. He is the fourth youngest of the nine children.