Finance executive Tung Nguyen, who fled Vietnam by boat as a child, says he will retire at age 50 next year after stuffing his family’s self-managed superannuation fund with gold and bitcoin.

Nguyen says his affinity for gold is personal after his mother used the precious metal to bribe prison camp guards in South Vietnam to secure his father’s release. The family then embarked on a bone-chilling boat ride to a new life in Australia in 1979. Nguyen was just three years old.