How about planting bamboo and geomantic omen beside the cemetery?

If you grow on the grave, it will harm you, and if you grow around the grave, you will ask for forgiveness and happiness.

If it grows on the edge of the grave, it is a good sign; If it grows on the grave, it's best to clean it as soon as possible, because the bamboo root system is developed, and going deep underground will destroy the veins, which is not good for the development of future generations.