Linxuan once saved the life of a kid and named him Du Feng. But he didn't want to stir up trouble in the ghost world and trigger a war between heaven and ghost. Linxuan had to stand opposite Du Feng, and was eventually killed by the righteous ghost, one of the five ghost kings in the ghost world.
Later, he was rescued and went down to earth to experience killing ghosts for the people. A young man also followed him...
Purpose: It is our duty to help the common people