It is said that there are black and white impermanence in the ground, and there are two snakes in the sky. They are called the Black and White Shuangsha, the justice gods in the sky. One day, the Sin Immortal imprisoned in the sky was escaped. The Emperor of Heaven sent the water god Yuan Xi, the fire god Su Yan and the story of the black and white Shuangsha.
Intention: Nothing to do if you are free.