An officer of Emperor YAO in the 23rd Century B.C., GUN was given the task of controlling the Great Flood, which was more-or-less caused by the monster GONG-GONG. The job was made even harder when GONG-GONG’s evil pet serpent fought him tooth and claw.
He tried his very best by building dams of earth, but unfortunately used some Holy Soil which the King was rather keen on. As punishment, ZHU-RONG, the God of Fire, was summoned to dispatch him — and so he died with the work incomplete.
But Heaven works in mysterious ways and from his dead body sprang DA-YU.
Because of his unceasing efforts in the face of intolerable opposition, GUN was elevated to the status of a God, while his son DA-YU finished off the job.