Gold, wood, water, fire and earth are sometimes a system, that is, according to the five elements of China traditional culture, Mutuke, Tukeshui, Shuihuoke, Huojinke and Jin Kemu. Water and soil are mostly used for treatment, and defensive wood defense is stronger than attacking other general main attacks.
There are wind, water, thunder, fire, electricity, light and darkness, which are a system. Light and darkness control each other, and wind benefits water, while fire and rain benefit electricity, water and light. Electricity is a pure wind belt, defending against dark pure attacks.
The novels I come into contact with are generally like this.