Nguyen Kim Hoa succeeded Arle Heinnesen's role as leader of the Exodus Fleet after Heinnesen died durring the passage through the Iserlohn Corridor.
By the time Nguyen Kim Hoa had grown so old that he could no longer see, the Imperial Year 218, the Exodus Fleet discovered a habitable planet in orbit of a stable, fixed star. The planet was named Heinnesen in honor of Arle Heinnesen. Once on the surface of the planet, Nguen Kim Hoa announced the foundation of the Free Planets Alliance and the resurrection of the Universal Calendar, then at its 527th year.
Nguyen Kim Hoa died, presumably of old age, in IC 221, or UC 530, three years after the foundation of the Alliance.