What does it mean to apply for Geng Shen?

In addition to the upper, middle and lower pumping methods, there is another pumping method called Geng Shen Qian.

"Geng Shen is one of the main branches, and the order is 57. The former is my own, and the latter is my heart. On the theory of yin and yang and five elements, the Geng of heavenly stems belongs to the gold of yang, and the application of earthly branches belongs to the gold of yang, with a good proportion. "

I can't explain the specific meaning of Geng Shenqian. It depends on specific examples to calculate divination, but the meaning it represents is not bad.