What does it mean that there is a stone in the jar on the balcony? Is there any feng shui meaning?

What does it mean that there is a stone in the jar on the balcony? Is there any feng shui meaning? -it should be arbitrary behavior. Perhaps this jar used to raise fish, and it was normal to raise fish and put stones, but now it has not been raised, and it has been idle and has not been cleaned in time. Putting stones in the cylinder has the following purposes. Heavy stones can increase the stability of the cylinder and prevent it from falling over. Raising fish and putting stones can enhance the effect of natural simulation. There is a poem with another meaning: push the moon out of the window behind closed doors and throw stones at the bottom of the well. The water tank filled with water symbolizes a well, which can reflect the sky. Adding a stone means that throwing a stone broke through the bottom of the tank. We can think from these aspects.