Feng Shui is a traditional cultural belief in China, which emphasizes improving people's wealth and well-being through environmental layout. Although many people believe in the power of Feng Shui, science has not proved the validity of these beliefs.
Of course, if a couple believes in the power of geomantic omen and that their emotional marriage can be improved through correct arrangements, then this belief may have a positive psychological effect on their marriage. But this effect does not come from Feng Shui itself, but from their belief in Feng Shui and their emphasis on marriage.