What is the answer to the stone that cuts off children and grandchildren: It refers to a stone that has no sons or grandchildren. That is to say, if you encounter this kind of stone, you will not be able to continue your incense and die off your children and grandchildren.
The Stone of Cutting Off Children and Generating Grandchildren is a speculative hexagram of folk Feng Shui. It means that if the front door or window of the owner's house faces a big stone or a pile of rockery stones, it means that the person will die off and die off his descendants!
The metaphor is: to cut off the descendants and grandchildren!