The five elements lack wood and water. Why is the western god golden earth?

The five elements are born together: Jinshui, aquatic wood, Muhuo, Huotu and Primary Gold; Therefore, the five elements are short of water and like gold (golden water).

The five elements are born together: Jin Kemu, Muketu, Tukeshui, fire and water, fire and water; The five elements are short of wood and like soil (the five elements are born together-wood and soil)

In short, a certain cycle must be formed, and both are indispensable.