拉萨：身体先于计划

The first thing Lhasa teaches a traveller has nothing to do with scenery; it concerns the body.

The city sits at roughly three thousand six hundred and fifty metres, and the oxygen content of the air is about two-thirds of what it is on the plains.

The most sensible plan for the day you arrive is to do nothing at all.

My friend gave me instructions at the airport: don't walk fast, don't shower, drink plenty of water, get an early night.

At the time the advice struck me as excessively cautious.

Half a day later I had a headache, and climbing twenty steps meant stopping to catch my breath.

The plateau doesn't negotiate; it simply determines how much you can get done today.

That single rule reorganizes the rhythm of the entire city.

Elsewhere, you can use willpower to cram a schedule full.

Here, your schedule is set by how well you can breathe.

By the second morning things had improved.

The sky was an extremely deep blue, the sunlight strong enough to hurt, and yet the wind stayed cold.

My friend said: in Lhasa, under the sun and in the shade belong to two different climates.

This is not a figure of speech.

Standing in the light you have to take your coat off; three steps into shadow you put it back on.

High altitude, low humidity and thin atmosphere together produce this extreme swing in temperature.

In the morning we went to the Potala Palace.

It is built on Red Hill; the main structure is one hundred and seventeen metres tall with thirteen storeys, visible from many directions across the city.

Construction began in 1645 under the Fifth Dalai Lama, and continued in stages afterwards.

The white sections and the red sections were built in different eras and carried different functions.

In December 1994 the Potala was inscribed on UNESCO's World Heritage list.

Visitor numbers are capped, the route is fixed, and the time you may stay is limited.

The number of steps isn't actually remarkable, but at this altitude every flight requires a pause partway.

I stopped three times before I got to the end.

In the afternoon we went to the Barkhor, the kora circuit encircling the Jokhang Temple, about one kilometre round.

The Jokhang was built in 647 under the Tibetan king Songtsen Gampo, over thirteen hundred years ago.

Which means the centre of this circuit predates the Potala by nearly a thousand years.

First the temple, then the road, and only last the palace on the hill.

Everyone moves in the same direction, clockwise.

The practice is called kora.

Some carry a prayer wheel and recite as they walk; some prostrate along the route — standing, palms together, laying the body flat, rising, and advancing one body length.

Covering a kilometre that way takes a very long time, and it is repeated daily.

My friend said many people complete several circuits a day, and by five in the morning the street already has people on it.

We walked one circuit; sitting down afterwards, I was short of breath again.

The significance of this road plainly isn't distance.

Its significance lies in the repetition itself: the same route, the same direction, every day, sustained across many years.

In an era that treats novelty as a value, that kind of repetition is almost a counter-proposition.

Someone in a roadside shop handed over a cup of butter tea.

It's made by churning strong tea, butter and salt repeatedly until they fully combine.

The tea is pale white, salty, with a pronounced sense of fat on the palate.

The first mouthful is quite unfamiliar; the second goes down much more easily.

In a cold, high, oxygen-poor environment, fat and salt are a physiological requirement, and taste preference is only the result.

So-called local flavour is, much of the time, an answer written by the climate.

Two categories of people walk the Barkhor simultaneously.

Tourists move quickly, phones raised, stopping at any doorway with a good composition.

Local people move slowly and evenly, and most don't look at the shops on either side.

Two groups share the same street while doing two entirely different things.

The street's level of commercialization is not low these days, with plenty of souvenir shops and cafés.

Criticizing it for having been changed by tourism is easy.

But come once at dawn and you'll find people already walking the kora before the sky lightens.

Tourism occupies only part of this street's day; the rest still runs at its original tempo.

At dusk we returned to the square below the Potala.

The lights came up, the white walls turned warm gold, and people photographed while others simply sat.

I thought again about that first-day headache.

In this city, the body reaches its verdict ahead of the plan.

You want to accelerate; it vetoes you outright.

An altitude of three thousand six hundred and fifty metres, a palace of one hundred and seventeen, a temple of thirteen hundred years, a circle of one kilometre.

Put those numbers together and you have the reason Lhasa does not permit anyone to be in a hurry.

If a place compelled you to slow down from your first hour on the ground, would you read that as a restriction, or as a rare kind of permission?