"Gogyo Sokoku" refers to relationships between elements such as 'wood defeats earth, earth defeats water, water defeats fire, fire defeats metal, metal defeats wood.'
「水は火に勝（剋）ち、火は金に勝ち、金は木に勝ち、木は土に勝ち、土は水に勝つ」という関係を『五行相剋』という。