Generally speaking, it means that the two characters of the earthly branch on the day you were born are related to the heavenly stems (such as Jiaziri, Jiamuzi water, water and wood), and the earthly branches are beneficial to the heavenly stems from an overall perspective. .
There is a phenomenon that the earthly branches give rise to the heavenly stems, which is also called getting roots and having roots. I don’t know where your sentence comes from, but I guess that’s what it means.