Earth season is closing. On September 22 the light and the dark are equal, and after that the year belongs to the dark half. We move fully into Metal.
Everything from here turns inward. The light shortens, the air dries, the green goes out of things, and the work of the season stops being accumulation and starts being refinement.
Outside, that work is already underway. The trees have started dropping their leaves, which they manage without any apparent difficulty.
What the Equinox Is
Twice a year the sun crosses the celestial equator and day and night come out roughly even everywhere on earth. In March that balance tips toward light. In September it tips the other way.
That is the whole event. The significance people assign to the equinox tends to float free of what is happening, and nothing mystical occurs at the moment of crossing. What makes it useful is that it is a threshold you can locate on a calendar, which most transitions in a life are not.
In the Chinese agricultural calendar, the autumn equinox is 秋分, Qiūfēn, which translates as autumn's division. It sits at the midpoint of autumn rather than its beginning, dividing the season into halves. The framework treats it as the hinge of the harvest: the gathering is mostly done, and what follows is sorting, drying, storing, and deciding what will not be kept.
That is a good description of what the season asks of a person, too.
Metal
Of the five elements, Metal is the one people find hardest to feel their way into. Wood is spring and growth. Fire is summer and expansion. Earth is nourishment. Water is depth. Metal is the element of refinement, boundaries, and letting go, and none of those are as easy to picture.
Start with the organs.
The Lung and the Large Intestine
Metal governs the Lung and the Large Intestine, and the pairing tells you what the season is about.
One organ takes in what is pure. The Lung draws in air, extracts what the body needs, and distributes it. In Chinese medicine the Lung also governs qi more broadly, so breath and vitality get described in the same language. The other organ releases what is spent. The Large Intestine takes what is finished with and moves it out.
They are two halves of one movement, and neither works alone. A body that takes in and never releases is not healthy. Neither is one that releases and never takes in.
Breathing shows you this. You cannot take a full breath into lungs that are already full, so before anything new arrives, something has to leave. Most of us treat letting go as the hard part and receiving as the reward. The body works in the other order. The release is what makes room.
Dryness
The climate associated with Metal is dryness, and autumn is when it arrives. The air loses moisture, skin and lips crack, throats get scratchy, and coughs turn dry rather than productive.
The Lung is considered the most delicate of the organs and the most exposed, since it opens directly to the outside through the nose. It is also the first organ affected by seasonal change, and colds tend to arrive on the turn rather than in the depth of winter.
Autumn is the season to moisten. Warm liquids, steam, pears, and honey all appear in classical autumn advice. So does tea, one of the few daily habits that delivers warm liquid and steam at once and asks you to sit still while it does.
Grief
Every element carries an emotion, and Metal's is grief.
That pairing is structural rather than a diagnosis of anyone's autumn. Grief is what letting go feels like from the inside, when the thing mattered and you knew it, so a season built around release will surface it.
In Chinese medicine, grief that moves through a person is considered healthy. Grief that gets stuck is what causes trouble, and it is said to lodge in the Lung, which is one explanation for the tight chest and the shallow breathing that come with it. The treatment is to keep breathing rather than to hold still and wait for it to pass.
That is also why this season is associated with shadow work and with going deeper. The yin half of the year gives you longer nights and less to do outside, and those conditions tend to bring up whatever has been waiting.
The Po
The spirit of the Lung is the 魄, the po, usually translated as the corporeal soul. Where the Heart's shen is the bright, outward, thinking spirit, the po is the bodily one: instinct, sensation, reflex, the part of you that flinches before you decide to.
The po is what registers a change in the air before you have named it. If you have ever felt the season turn a week before the weather did, that was the po doing its job.
Metal season rewards paying attention to it. Much of what this season asks you to sort through is not available to analysis. You know a thing has finished before you can explain why.
What the Trees Are Doing
Watch a tree drop its leaves and it looks like nothing. No decision, no ceremony. The leaf has finished its work, the tree has no further use for it, and it falls. There is no scenario where the tree carries its leaves through the winter out of loyalty to the summer.
The tree is doing more than it appears to. As light decreases it stops producing chlorophyll and the green drains away, revealing pigments that were in the leaf the whole time. Then it builds a layer of cells at the base of each leaf stem, called the abscission layer, which severs the connection deliberately and seals the wound behind it.
So the tree cuts its leaves loose, on purpose, at a chosen moment, having first pulled back everything worth keeping. The letting go is its own action with its own timing.
Most of us are slower at it. We keep obligations and habits past their usefulness, because setting one down means admitting the season changed.
The invitation of Metal is smaller than it sounds. Nothing has to be purged or overhauled. You only have to notice what you are still holding, and ask whether it is essential or whether it is a leaf.
Tea is a good place to practice this. A session needs very little: one tea, one vessel, hot water, and whatever time you have. When it starts collecting steps and equipment, ask which parts are essential and which are habit.
An Autumn Equinox Ritual for Letting Go
Why now. On the equinox the light and the dark are equal. Everything after it leans toward the dark half of the year, which makes this the natural point to decide what goes forward with you and what doesn't.
What you need. A grounding tea (a shou puerh or an aged sheng work best), your favorite teaware, and twenty minutes alone. Make sure you have something to write with nearby, since there's a journal prompt for each pour. Writing makes you finish the sentence in a way thinking doesn't.
Empty first. Before the water goes on, exhale all the way out and sit empty for the moment before your body fills you again.
Why: the ritual starts with the season's own mechanism. You are doing the thing the whole element describes, at the smallest possible scale, before anything else happens.
First pour. What am I still carrying that finished its work a while ago? Not what you think you should release. What has already ended and simply hasn't been set down.
Why: this one is inventory. Most people can produce a list of what they think they ought to let go of, and that list is usually somebody else's. The more useful question is what has already finished without your noticing.
Second pour. Where is there clinging, and where is there natural release? Some things are falling away on their own this year. Some are being held with both hands.
Why: this is the sorting question, and the one the trees answer without effort. Some of what you are carrying is already leaving, and naming which is which tells you where your energy is going.
Third pour. What is essential going into the dark half? Strip the answer further than feels comfortable, then name one thing you are setting down.
Why: Metal refines, and refining means cutting further than feels safe. One named thing is enough. A list of ten is a way of avoiding the one.
Close. Stop while the tea still has more to give, and pour what is left onto a plant or onto the ground. Letting go of something with value left in it is the harder version, and the one the season is asking about.
Why: it is easy to release what is finished. The tea still has pours in it, and stopping anyway is the whole practice in one gesture. Colin makes a related point about porous clay: sometimes the right move is to abandon a tea that still had more to give, because leaving it sitting costs you more than the pours are worth.
Tea for Metal Season
Metal's color is white, and white teas are the obvious association, though the connection is more than color. Silver Needle and other high-quality white teas are minimally processed, which suits an element concerned with what is essential. There is very little between the leaf and the bowl.
The season's other pull is toward refinement. Colin teaches Metal at the tea table as the impulse to break a method into its parts so each one can be worked on separately: small porcelain cups, precise pours, restraint. If you have been meaning to get more exact about water temperature or leaf weight, this is the season that supports it.
For the equinox itself, something grounding suits the crossing better than something bright. A shou puerh or an aged sheng meets the yin half where it is going. By the elemental framework those are Water teas rather than Metal ones, which is the point: you are reaching toward where the year is headed.
And for the dryness, anything that moistens. A long, slow session with a mellow tea does more for an autumn throat than a short intense one.
Journal Prompts
The three from the ritual, with room to go further.
What am I still carrying that finished its work a while ago? Look for the things you keep re-deciding. A commitment you renew every few months without ever choosing it outright. A relationship you maintain out of history. A project that gets moved forward on the calendar rather than worked on. Those are usually finished already.
Where is there clinging, and where is there natural release? Make two lists. Notice which one was easier to write. Notice whether anything appears on both, since that is usually the one worth your attention.
What is essential going into the dark half? Write the answer, then cut it by half, then cut it again. What survives three passes is closer to true than the first version. Then name one thing you are setting down, and be specific enough that you would know later whether you did it.
A fourth, for after the equinox. What did I take back in? The Lung takes in as much as it releases, and a season spent only letting go is only half the movement. A week from now, notice what filled the space.
Where This Goes
Metal is followed by Water, and winter asks something different: not refinement, but depth and stillness and a willingness to stop steering. What you set down now is what you will not be carrying into that.
In the meantime, the season is doing its work outside whether or not anyone participates. The leaves are coming down on their own schedule. The light is going earlier each week. The invitation is only to notice, and then to be slightly more deliberate about it than a tree has to be.
Keep what's essential. Let the page hold the rest. This is what Metal does.