梅花易数 isn’t fussy about time or place — whatever is in front of you, cast a hexagram on the spot and you get a rough sense of where it’s heading. It reads the generating/controlling relation between the “subject” and the “object” — which side is strong, which is constrained, whether the matter flows smoothly and how fast. Good for a quick “roughly how will this turn out”. Don’t worry about subject/object: a plain-language reading follows.