Of course, the best feng shui backing stone is the true feng shui of Shi Gandang Flower Pool in Taishan Mountain. A round stone or an elephant can also strengthen the backing. Geomantic rocks can strengthen the strength of mountains and nobles.
However, if Feng Shui is to be effective, it is generally impossible to have good luck or bad luck just by relying on a single condition of Feng Shui in a flower pond. There must be multiple auspicious conditions at the same time.