Why does the gardener say you can't put stones in the flowerpot?

Yes, it is not easy to put stones and other substances on the surface of the flowerpot, because it is difficult to determine how to water after putting these stones on the surface of the flowerpot. Too much watering will lead to the death of rotten roots, and too little watering will lead to the death of water shortage and dryness. If you don't put stones and things like that, you will know whether the soil in the basin is dry or wet and whether it should be watered, so that it is not easy to cause death caused by watering.