Construction
Pick a lucky hourDo matches: Raise Pillars, Raise the Roof Beam
Lucky 28-mansion day
Black Path day
Malefics to avoid: Five Voids, Earth Tally, Great Knife, Departing Doom, Double Day, Vermilion Bird
Clash: Clash Hai E
Groundbreaking avoids clashes with owner and tai-sui direction; combine site orientation.