How do you say "Fu" in geomantic omen when laying floor tiles?

Paving floor tiles with the word "Fu" is not the practice in geomantic omen. Folks often hang the word "fu" upside down, which means happiness. If they hold the word "fu" upside down, they won't see it. In feng shui, auspicious ornaments should be placed in a conspicuous position, and unlucky things can be hidden or thrown away, just like dregs falling on the road make people run over them.