An agent showing you a house in Sydney will often lead with north-facing, in the tone of someone reporting good news.
Anyone who grew up in China does a small double-take at that. The rule they carry says sit north, face south. North-facing means the shaded side. It means a house that never sees the sun.
That instinct is correct in the northern hemisphere. Here it is thoroughly wrong.
But the other thing I hear, that southern-hemisphere Feng Shui has to be turned upside down entirely, is also wrong. Not entirely. One layer.
The formula dropped the reason it works
China’s main band of settlement sits between roughly thirty and forty-something degrees north. At that latitude the sun is always in the south, and the further north you go the lower it sits. Beijing’s midday sun at the winter solstice is under twenty-seven degrees, coming in at a slant from the south. So a south-facing window lets winter sun reach deep into the room, while the summer sun rides high enough that a projecting eave shades it out.
That is a rule about daylight and heat gain. Plain enough. The trouble started when it got compressed into four characters and passed down, because the sun dropped out of the sentence. What dropped out was the reason.
Sydney
Sydney sits just under thirty-four degrees south. The sun is in the north all year. Midday in June it is a little over thirty-two degrees up; in December it is nearly overhead.
So north-facing living rooms and back gardens get light year round, and the south side never gets midday sun. From October to March it catches an hour or so early and late, when the sun rises and sets south of due east and west, at an angle low enough that no eave will stop it. That is why north-facing is a selling point in every listing here. Not mysticism. The arithmetic works out.
The winds swapped too. Sydney’s cold air comes from the south and southwest, off the Southern Ocean and Antarctica. The northwesterly is the hot one, and in summer it arrives with fire danger attached. The cool afternoon change comes off the sea from the northeast. All of it is the reverse of the experience the classics were built on.
Which half flips
My own working rule is four characters in Chinese: the heavenly stars do not move, the earthly trigrams do. Three things stay.
Landform stays. The rise and fall of the ridge, the way the flanking hills embrace or turn away, where water enters and leaves, whether the ground opens in front of the door. That reads shape. A watercourse curving around a site like a belt is still doing that in Sydney; one bending away still is too. A hill sitting on your front door presses down on it in either hemisphere. This layer transfers unchanged.
The star cycle stays. The Three Cycles and Nine Periods are a heavenly count. It runs globally, and we are all in Period Nine, 2024 to 2043. Stars do not care which side of the equator you stand on.
The compass stays. The horizontal component of the magnetic field still points north down here, so the twenty-four mountains are read exactly as they are anywhere. People sometimes hear this as “you need a reversed compass in Australia.” You do not.
What flips is the Later Heaven placement of the trigrams.
Why the placement has to follow local conditions
The Later Heaven arrangement was not assigned arbitrarily. Li sits in the south and Kan in the north because of conditions on the ground: in central China the south is hot, which is fire, and the north is cold, which is water. Zhen sits east and Dui west because of sunrise and sunset. The arrangement is the moment where an abstract order gets fitted onto actual ground, and what it was fitted to was the local pattern of heat and light.
In the southern hemisphere that pattern is inverted. North is the hot side, south is the cold one. So the placement follows: the north and south positions exchange, the four corners exchange with them, and east and west stay where they are.
| Trigram | Northern hemisphere | Southern hemisphere |
|---|---|---|
| Li ☲ fire | South | North |
| Kan ☵ water | North | South |
| Xun ☴ wood | Southeast | Northeast |
| Gen ☶ earth | Northeast | Southeast |
| Kun ☷ earth | Southwest | Northwest |
| Qian ☰ metal | Northwest | Southwest |
| Zhen ☳ wood | East | East |
| Dui ☱ metal | West | West |
East and west hold because the earth turns the same way on both sides of the equator. The sun still rises east and sets west. At five in the afternoon in February you can stand an arm’s length from a west-facing brick wall and feel it radiating. Everything the old texts say about western sun applies here unchanged.
The solar terms swap with it
Push the same logic one step further and the twenty-four solar terms keep their names but swap in use. December in Sydney is read as the midsummer stretch, June as midwinter. This is not rewriting the calendar. It is admitting that the seasons here already run opposite to the ones the system was built on.
Where it bites is date selection. The waxing and waning of the five phases through the year has to be counted against the local season. People take a Chinese almanac and pick Australian dates straight out of it, and the strengths come out inverted — inverted neatly enough that nothing looks wrong on the page.
One more thing about the compass
A luopan reads magnetic bearings, and the tradition has always worked off the needle. Fine. But Sydney’s declination runs twelve to thirteen degrees, and a single mountain spans only fifteen. Magnetic north and true north are nearly a whole position apart.
When you discuss orientation with an architect or an agent, the north in their sentence is true north. Don’t let the two blur. This has nothing to do with hemispheres, incidentally. The northern hemisphere has declination too. Most people simply never notice they are using two different norths.
What goes wrong when it’s copied straight
The commonest case I see is the whole northern conclusion transplanted intact. A master bedroom with beautiful northern light judged as facing away from the sun, and the client paying to move the bedroom to a south side that stays cold all year. A house with a north-facing back garden, the kind where washing dries in any season, described as failing to gather qi.
New estates hide it best. Forty houses in a row with the same floor plan and the same orientation: chart them the northern way and the plate looks respectable, but it is inverted on the ground, because the placement was wrong from the first step.
Where I haven’t settled
Once the placement swaps, exactly how that carries through onto the nine palaces is a further question, and I am not going to work it out in this piece. Practitioners differ, I am still checking my own, and it deserves its own article.
There is also a school that reverses everything: bearings swapped, stars flying backwards, on the grounds that the whole sky is mirrored down here. That is not baseless. You look up at the southern sky, Polaris never rises, you find your direction by the Southern Cross, and the sun’s daily arc runs anticlockwise. I don’t do it. My dividing line is between heaven and earth: stars are in the sky and do not change hemispheres with you, while a trigram lands on ground, and ground here is what it is.
I won’t claim certainty. When landform and the compass method disagree, I go with landform, because landform is the layer you can walk over and measure.