The five principles are: Mutuke, Tukeshui, Shuihuoke, Huojinke and Jin Kemu. So mutually restrictive, endless cycle. Under normal circumstances, mutual resistance is also a force to maintain balance. If the five elements interfere with each other too much, it will be counterproductive and produce abnormal changes.
In the five elements, each line has the relationship between "winning me" and "winning me". Take wood as an example. If we are "gold" and we are "soil", then soil is the "victory" of wood, and gold is the "invincible" of wood. The other four lines, and so on.
Mutual growth, mutual restriction, mutual connection and mutual restriction, thus maintaining the normal balance between the two.