What Xuan Kong adds to a static layout reading
Form-school feng shui reads what is physically in front of you: the approach to the door, the shape of the plot, the light, the clutter, the condition of the rooms. Xuan Kong (玄空) keeps all of that and adds two variables a static reading has no place for — the direction the building faces, and the period in which it was completed. Those two inputs generate a nine-sector chart in which each sector carries three numbers: a mountain star, a water star, and a base star. The chart does not replace the physical reading. It is a second pass over the same building, asking how the same rooms shift emphasis over time. That is the whole of what it adds. If a room is dark, damp and never used, no star number changes any of that.
The two inputs, and why a guess is worse than nothing
Every chart needs exactly two facts about the building. The first is the facing direction: the compass bearing the building faces, measured from the centre of the rear wall looking out through the front. This is a measurement, not an estimate. Use a magnetic compass rather than a phone sensor, take three readings from different points and average them, and expect to be corrected by metal door frames and nearby electrical equipment. A five-degree error can push the reading across a fifteen-degree sector boundary, which relocates every number in the chart. The second is the construction period. Period 9 began in February 2024 and runs to 2044. A building completed between 2004 and 2023 belongs to Period 8, one completed between 1984 and 2003 to Period 7, and so on back in twenty-year steps. If the structure was substantially rebuilt — roof replaced, load-bearing walls moved — the rebuild date is the one that counts. A chart built on guesses is worse than no chart at all, because it produces confident answers from wrong inputs.
Reading a chart: three numbers per sector, read as a group
Once the nine-grid is laid over an accurate plan, every sector holds three numbers. The mountain star (山星) sits on the left and describes people — rest, health, relationships, the quality of staying put. The water star (水星) sits on the right and describes activity — movement, income, opportunity, the quality of doing. The base star (运星) in the centre of each cell is the period’s own energy, the ground the other two stand on. The pairing is what matters, not any single number. A sector with a strong mountain star beside a weak water star is a different room from the same pair reversed, even though both contain one favourable number. Read the three together, then ask what the room is actually used for. A strong pair in a storage cupboard is doing nothing for anyone.
The time layers: period and year change the reading, not the chart
Period 9 does not change a single number in your chart. It changes which numbers count as timely. Star 9 is the reigning star of the period, star 1 is the future star, and star 8 has moved from reigning to declining without becoming negative — still useful, no longer the one driving the reading. The annual layer works the same way: nine stars step through the sectors once a year, with 5 Yellow and 2 Black the two usually worth noting and 8 White and 9 Purple the two usually worth using. Both layers are interpretation devices applied to a fixed chart. Neither is an event that happens to your home. A period change is a recalibration of emphasis, and an annual star is a temporary overlay on top of it.
A working method, and where it stops
The order is short. Measure the facing direction. Confirm the construction period. Draw an accurate plan and centre the nine-grid on it. Read each sector’s three numbers as a combination. Match each room to the kind of energy its stars describe. Then stop. What the method will not do is tell you what will happen to you. It describes tendencies in a space. The physical condition of the building, how each room is actually used, and who lives there all carry more weight than any star number, and a chart is a vocabulary for talking about a space — a diagnostic aid, not a verdict. Treat it as one input among several, and be sceptical of any reading that turns a number into a promise.