This is a term in eight-character numerology, which means as follows:
The yen in your sign (that is, on your birthday) is very prosperous, and you need the five elements of gold and Shui Mu to restrain, consume and vent its prosperity. If there are already five elements in the eight characters that help the yen, then these five elements are no longer needed.
Simply put, the yen in your chart is very strong, and you need some five elements to restrain it and make it not too strong. Fire, earth and five elements help the yen. If these five elements reappear, it will make the yen more prosperous, so it needs to be avoided. Gold, Shui Mu and Five Elements can restrain the yen, reduce its strength and make the whole trend chart more balanced.