Month's Establishing Branch
The day's Earthly Branch is the same as that month's Month's Establishing Branch, making it an 'Establishing Day' in the Jianchu system. In the old days, breaking ground and opening granaries were taboo.
The Month's Establishing Branch is a concept in traditional Chinese calendrical systems, referring to the Earthly Branch corresponding to the current month. It also signifies the 'Establishing Day' among the Twelve Spirits of the Jianchu system. Old almanacs often held that the day's Earthly Branch energy is overly vigorous and powerful on such a day, making activities like breaking ground for construction or opening granaries for shipments inadvisable, fearing it would be 'disturbing the soil above the Grand Duke' and invite misfortune. While an Establishing Day is generally considered 'suitable for establishment,' here it requires caution due to its overlap with the month's directive, reflecting the ancients' reverence for the forces of natural timing.