Guides · Travel · 14 min read · Updated September 2026

On the road

The tradition’s traveller had an almanac and an inn, and the modern one has a hotel room and a clock that has been left behind. The almanac’s day for setting out and the direction not to travel; the first night in a strange room, which the brain keeps half awake, and what the tradition’s bed rules do about it; the ten minutes that make a hotel room the site’s room; light after a long flight, by the direction flown; and the house left behind.

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Fig. 01 A bed by a window in a room that is not yours. The tradition’s rules for the bed hold in an inn, and the research says the first night needs them most.

The tradition wrote its rules for a house and its people slept in inns, and the almanac kept a line for the day a journey should begin. A modern traveller sleeps in a hotel room built to one plan across the world, and arrives with a body clock set to the wrong sky. This guide gives the almanac’s day for setting out, the first night in a strange room as the research measures it, the ten minutes that turn a hotel room into the site’s room, the light that resets the clock by the direction flown, and what to do with the house left behind.

The day for setting out

The almanac, the tong shu, lists setting out, chu xing, among its standard items, and every day’s column says whether the day is fit for a journey; the choosing a day essay gives the twelve officers by which it decides, and for travel the manuals favour Establish, whose first gloss is travel, and Open, and forbid Break, Danger and Close. The direction matters as much as the day. The year’s Tai Sui, the Grand Duke, occupies one of the twelve directions, and the folk rule is not to set out towards him nor to move house into his quarter; the day’s spirits, which Palmer’s translation of the almanac lists column by column, add a direction of the day for the god of joy and the god of wealth, towards which a traveller with business goes. Smith’s survey of late imperial divination finds the travel line among the most consulted on the page, because a journey was the most dangerous thing most people did. The site treats the day as it treats the moving day: a courtesy to the calendar, kept if it costs nothing, and not the reason a journey goes well.

The first night

Plan 01 A hotel room, read for one night The room every chain builds, six metres deep by three sixty wide with the entry corridor beside the bathroom: the bed against the wall opposite the bathroom with its head to it, which the plan gives before the guest arrives; the door at the end of the corridor, in view from the pillow, which the plan also gives; the window at the far end with the desk under it and the chair beside. What the guest changes in ten minutes is drawn with arrows: the mirror on the wardrobe door, which faces the bed, is swung open against the wall; the chair is turned so that its back is to the wall and the door in view, for the one hour of work; the desk lamp is moved to the far side of the bed as the night light, the room’s own lamps being over the pillow; the blackout curtain is drawn to the wall and the gap pinned; the air conditioning is set to nineteen degrees; and the phone goes on the desk, not the bedside table. The bed is not moved, and the room does not need it to be.

The research has measured what the tradition’s traveller felt. Tamaki and colleagues found that on the first night in a new place one hemisphere of the brain sleeps more lightly than the other and wakes faster to an unfamiliar sound, a watch the brain keeps in a strange room and stands down on the second night; the first-night effect, which every sleep laboratory discards from its data, is the body doing what the command position does with furniture, keeping guard. The hotel room is built for it better than it knows. The chains build one room across the world: the bed against the wall opposite the bathroom with its head to it, the door at the end of the entry corridor in view from the pillow, the window at the far end with the desk beneath. The plan gives the tradition’s bed before the guest arrives, and what remains is ten minutes’ work, drawn as arrows above. The mirror on the wardrobe door, which faces the bed in most rooms, is swung open against the wall, for the reason the mirror guide gives, that a half-woken sleeper should not see movement. The chair is turned so that its back is to the wall and the door is in view, for the hour of work. The desk lamp goes to the far side of the bed as the night light, since the room’s own lamps are over the pillow and too bright. The blackout curtain is drawn to the wall and the gap pinned, the air is set to nineteen degrees, and the phone goes on the desk, not the bedside table. The bed is not moved; the room does not need it to be.

Evidence · A strange room, measured

The first night is lighter, and the room can make it less so. Harding and colleagues’ review gives the temperature at which sleep is deepest, a cool room and a warm bed, and a hotel’s thermostat is the one control a guest has that a home sometimes lacks; the World Health Organization’s night noise guideline, which the quiet guide draws, is exceeded in most city hotel rooms on the street side, and the room at the back or on a higher floor is the tradition’s quiet room in a booking form. Chang and Cajochen’s screen studies apply with more force away from home, when the phone is the only company: an evening on it in a hotel bed delays the clock that the journey has already moved. The tradition’s rules for a bed do not cure the first night, which is the brain’s and will pass. They make the room one the brain can stand down in sooner.

Light, by the direction flown

Fig. 02 Light after a long flight, as the research on jet lag prescribes it, drawn as two days. Flying east, the body’s clock must be moved earlier, and the cue that moves it is light in the local morning and darkness in the local evening: seek the sun between six and eleven, keep the curtains drawn and the screens off from five in the afternoon. Flying west the clock must move later, and the prescription reverses: avoid the early morning light, seek it from the late afternoon into the evening. The hours are the local ones and shift by an hour or two with the length of the flight; for more than eight time zones the first day is treated as the reverse of the rule, since the clock may go the wrong way round. The tradition’s traveller had none of this and did not need it, since he moved at the speed of a horse; what he had was the almanac’s day for setting out and the inn’s bed against a wall, which the site’s guide keeps. The prescription is Waterhouse and colleagues’ review in the Lancet, which gives the light-seeking and light-avoiding windows by direction and by the number of zones crossed; the site rounds them to whole hours. The clock itself is the one the sleep guide describes, and it is set by the same light at home.

The one thing the tradition’s traveller never had to do was move his clock. A long flight leaves the body’s clock set to the sky it left, and the clock is moved, as the sleep guide explains for the home, by light: Waterhouse and colleagues’ review in the Lancet gives the windows, and the drawing above gives them by direction. Flying east, the clock must move earlier, so the traveller seeks the local morning light and avoids the local evening’s; flying west, the clock must move later, and the prescription reverses, the early morning avoided and the late afternoon and evening sought. The windows shift by an hour or two with the number of zones crossed, and beyond eight zones the first day is treated as the reverse of the rule, since a clock that far off may be pushed the wrong way round. Wright’s campers reset their clocks to the sun in a week without a plan; a traveller with a plan does it in a day or two per zone, and the plan is a walk in the morning or the evening and a drawn curtain in the other. The tradition would have called it living by the sun, which it did.

The long stay

1The bed first: moved to the solid wall, the door in view, away from the window
2If it cannot move: the head turned to the wall and a chair set in the door’s line
3The desk second: the wall behind, the light from the side, the door in view
4The window third: the curtain closed at night and opened at first light, every day
5The shelf facing the door, with the one photograph and the one object from home
6The plant, alive, by the window: the household in a pot

Plan 03 A room for a month, made a house The tradition’s rule for the long stay was to make the room a house, in the order a house is made, and the drawing gives a rented room of four metres by three and a half after it has been done. The bed came first, moved from under the window to the solid wall with the door in view, which is the command position and the first night’s rule kept for the month; where a bed cannot be moved, the head is turned to the wall and a chair is set where the door’s line would reach it, which is the ghosted alternative. The desk came second, set as the examination candidate set his in his lodging, the wall behind and the light from the side. The window came third, not as a thing to move but as a habit, the curtain closed at night and opened at first light every day, which is the one habit that makes a strange room stop being strange in a week. Then the small household: the shelf facing the door with the one photograph and the one object from home, which the Qing traveller made with a paper image of the household gods and the psychologists call territory, and a plant that is alive and has to be watered. A room lived in for a month by these rules is a house; one lived in from the suitcase is a corridor with a bed in it.

A night is the tradition’s hard case and a month is its ordinary one, because the manuals were written for households that moved and stayed: the official posted to a county for three years, the merchant in a guild house for a season, the candidate in a lodging for the examinations. The rule for the long stay was to make the room a house, in the order a house is made. The bed first, moved if it can be moved to the solid wall with the door in view and away from the window, and if it cannot, the head turned to the wall and a chair set where the door’s line would reach it; the first night section gives the night’s version and the long stay keeps it. The desk second, which the candidate in his lodging set as the scholar set his, with the wall behind and the light from the side, and the student’s desk guide gives the reasons. The window third: the curtain closed at night and opened at first light, every day, which is the sleep guide’s clock and the tradition’s morning rule, and the one habit that makes a strange room stop being strange in a week. Then the small household. The traveller of the Qing carried a tablet or a paper image of the household gods and set it on a shelf facing the door, and the household gods essay gives who; the modern version is the one photograph, the one object from home, set where it is seen from the pillow, which the tradition would have called establishing the house and the psychologists call territory. And the date of return chosen as the date of setting out was, from the almanac, which the choosing a day essay gives, so that the stay had two ends and a shape. A room lived in for a month by these rules is a house; one lived in from the suitcase is a corridor with a bed in it, and the body knows the difference by the second week.

Travelling, in order

The day, if it costs nothing. Establish or Open in the almanac; not towards the year’s Tai Sui; the choosing a day essay gives the table.
Book the quiet side. A higher floor, the back of the building, a window that opens, blackout curtains.
The ten minutes. Mirror to the wall, chair turned with its back covered, the lamp to the far side, the curtain pinned, nineteen degrees, the phone on the desk.
Expect the first night. The brain keeps watch in a strange room and stands down on the second; do not read the first night as the room’s fault.
Light by direction. East, morning light and evening dark; west, the reverse; a walk in one and a curtain in the other.
The house left behind. Curtains half open, a lamp on a timer, the stove clean and the bed made; the tradition’s house was never left dark, and the neighbours knew the difference.