What’s so difficult about making water-derived gold? Just top up the soil!
However, the knowledge of Bazi is not that simple. The explanation of what is missing is a layman's theory.
Looking at the water that created the earthly branch, the fire is weak and useless. The Jia wood is used to receive the water. It is taboo that the Wu earth that is dry in the year consumes the strength of the Jia wood. It cannot be replenished, so the Jia wood should be strengthened. Use your strength to show off... Use wood.