In the Five Elements Law, soil produces gold, so soil can be said to be the "root" of Geng Jin, which means that Geng Jin can grow only with the support of soil. However, this relationship is not absolute, and the balance between the specific astrolabe and the five elements needs to be considered.
In some cases, there may be an interactive relationship between Geng Jin and Xu Tu, not just a one-way relationship. For example, Geng Jin is too prosperous, and the soil may not be able to produce Geng Jin, but it will be overcome by Geng Jin; If Geng Jin is weak, the soil may not give enough hair growth. Therefore, it is necessary to analyze the relationship between the five elements in the chart in detail to determine whether the relationship between Geng Jin and Xu Tu is a simple relationship between birth and grams.