The so-called four pillars have feelings, for example: Jia. If there is Geng Shen's hard gold in the four pillars or Geng Xin in the Universiade, you can subdue Jia Mu. In this way, Jia can't conquer this land. Figuratively speaking, when you fight with someone, the person who can help you beat your opponent will help you beat him.
Let me give you an example when I say that the five elements can exist: there are four pillars in Jiakewu or Universiade, four pillars in Jiakewu, four pillars in Jiakewu, four pillars in Jiakewu, four pillars in Jiakewu and four pillars in Jiakewu.
I hope my answer is useful to you.