Xuan Kong San Ban Gua and Seven-Star Robbery (玄空三般卦 / 七星打劫)
This module teaches San Ban Gua and Qi Xing Da Jie as advanced pattern-recognition tools after a natal Flying Star or Xuan Kong Da Gua chart has already been calculated. The learner should not treat either name as a shortcut to a good verdict. A pattern label is only a hypothesis until the period, sitting-facing line, mountain star, water star, and exterior form all agree.
San Ban Gua as a Pattern Test
San Ban Gua study trains the student to notice parent sets such as 147, 258, and 369, and continuous strings such as 123 through 912, across the mountain, facing, and period layers. In academy use, the important habit is not memorising lucky examples. It is checking whether the pattern actually relieves an up-mountain/down-water weakness and whether the site gives mountain where mountain is needed and water or openness where water is needed.
Seven-Star Robbery as an Exception Layer
Qi Xing Da Jie is taught as a high-constraint exception, not a beginner formula. It requires exact period context, correct star flight, a verified sitting-facing line, and visible form support. When those inputs are missing, the correct reading is incomplete data. This module therefore belongs after Flying Stars deep work, Xuan Kong Da Gua precision, and the bearing workflow.