How to determine the five elements of each of the six eight trigrams?

Haizi belongs to water. Yinmao belongs to wood. Si Wu belongs to fire. Shen You belongs to gold. Chenxu Chou has not yet become earth. The Zi. Those who conquer me are officials and ghosts, and those who conquer me are my wife and wealth. Brothers who are with me. The six relatives are determined based on the relationship between the earthly branches, the five elements, and the hexagram palace. The five elements of Gandui Gua are gold. The five elements of Zhenxun Gua are wood. The five elements of Gen Kun Gua are earth. The five elements of Kan Gua are water. The five elements of Li Gua are fire.