What does it mean that the eight characters like to use wood?

Jiamu is a combination of five elements and heavenly stems, that is, the heavenly stems of Jiamu and Yibu belong to wood, and all the combinations are like this: Oriental Jiamu, men's fire, central Wuji soil, western gold, non-cassia water in the north, eight characters like to use Jiamu, that is, you like the five elements, for example, people with wooden surnames are your nobles, and so on.