Brief introduction of residual gas

The residual gas in the eight characters refers to: Chen is the residual gas of wood, emptiness is the residual gas of gold, ugliness is the residual gas of water, not the residual gas of fire.

Chen Xu's ugliness is not the original five elements, but they have both residual qi and five elements of the grave. There is a saying that "it is better to get a remnant of a tomb than to get a remnant of two or three days", and they also have the function of dredging the roots.