My sense of this is that your friend is superstitious based on cultural norms that may be acceptable to the culture but it communicates a doubt in your faith. I personally find a level of truth in Feng Shui (when my office was decorated in a more balanced way, my clients felt it was more comfortable to have psychotherapy) but the difference seems to be in the amount of faith you place in it. It is a novelty to me, but to your friend, they seem to seriously believe it. God ultimately decides who lives and who dies. To believe anything else is false.
On a side note, many cultures have negative beliefs about moving the graves of the dead. This may be ancient wisdom because decaying bodies are a petri dish of bacteria (e-coli, streptococcus, staphylococcus, etc.) so moving a dead body that has been in a state of decay could present a risk to the body, simply by breathing airborne pathogens. Does that mean the superstition is true? No. Does that mean it is wise to consider the wisdom of the ancients? YES! Don’t move dead bodies that have been in the ground unless absolutely necessary.
Peace!
Maria
