Yaoguai

Five hundred years buys a human face. Ge Hong, writing in the fourth century, set the figure down as plainly as a merchant recording a price: foxes and dholes may reach eight hundred years, and at five hundred they come into their power and can take up human form. Tigers, deer, and hares climb the same ladder more slowly, a thousand years or more, turning first into foxes and wolves and only afterwards into people. Cultivation, in his account, was never a human monopoly. Anything patient enough could work its way up.

The word for what they become is yaoguai, and it repays taking apart. Guai is the strange, the thing that does not fit, one of the four subjects Confucius is said to have refused to discuss along with feats of strength, disorder, and spirits. Yao is older and colder. In the Zuo Tradition it means a portent, a break in the natural order, and that text is blunt about where such breaks come from. They arise from people. If men give them no opening, they do not appear of themselves. When people abandon the constant, the strange comes up out of the ground to meet them. A yaoguai, read that way, is not an intruder into the world. It is the world reporting a fault.

That inheritance is why the category sprawls. A yaoguai can be a fox, a snake, a bird, a pine, a stone, an object left too long in a corner, or a soul that died badly and would not settle. What unites them is not species but condition: they hold power they were not born with, and they carry the quality of the wrong, the weird, the faintly off. English usually renders the word as demon, which fits poorly. Chinese already has mo for the properly evil thing in the religious sense and gui for the returning dead. A yaoguai is neither by definition. Some hunt. Some help. A good many simply want what everyone in the tradition wants, which is more time.

Ask what one looks like and the question comes apart in your hands. There is no shared anatomy. Gan Bao’s fourth-century collection, the Soushen ji, gathers over four hundred of these reports in terse chronicle prose and declines to tidy them: a fox that turned into a turtle, people whose heads detached after dark and flew off on errands of their own, marriages between the living and things that were not, a tryst conducted inside a tomb. The one physical constant is the seam. Whatever a yaoguai is wearing, something under it is older, and furred, and has no business in a house.

A lamp gutters low in a scholar’s study. The woman across the table has been calling for weeks, always after dark, always gone before the sky greys, and he has grown thin in a way his family cannot explain. That is a yaoguai working in its most ordinary mode, drawing off his qi a little at a time, close enough to smell the oil burning.

Not one of them was born a monster.

The book that fixed the word in the popular imagination is Journey to the West, in which a Tang monk walks toward India through what amounts to a corridor of them. The engine of the whole novel is an appetite. Tang Sanzang is perfectly pure, and it is held among the yaoguai that a piece of his flesh grants immortality, with the female ones reckoning that sleeping with him serves the same end. So they come for him in relays. The spider spirits of Gossamer Cave have a thousand years of cultivation behind them and wear the bodies of women to get close. The White Bone spirit wants the same meal and tries three doors in succession: a village girl carrying two jars, then an old woman hobbling up the path in tears, then an old man out looking for his missing wife and daughter. Each time the monkey escorting the monk sees straight through the disguise and swings his staff, and each time the spirit slips out of the falling body and leaves a corpse behind her.

The aftermath is the part worth keeping. When the third shape drops and the thing on the road resolves into a heap of dry bones, the monk does not thank his bodyguard. He has watched Sun Wukong kill three innocent-looking people, and the bones convince him of nothing. He dismisses him on the spot. Seeing a yaoguai for what it is turns out to be the easy half of the problem.

Their powers follow from how they were made. Longevity comes first, because longevity is the method. Then transformation, the borrowed face and the borrowed voice. Then enchantment, the trick of making a room, a road, or a marriage appear to be something else. Past that the range is enormous, since a spirit’s abilities tend to echo whatever it was before it began counting centuries, which is why the fox spirits deal in seduction and the mountain things deal in fog and misdirection.

The limits follow from the same logic. A shape is a garment rather than a body, and garments slip: a tail, a smell, a shadow that lies down wrong. Cultivation is slow, so it can be interrupted, and a creature two hundred years into the work is two hundred years away from being anything much. Then there are the specialists, the Daoist and Buddhist ritual masters and exorcists, and the protective practices Ge Hong recorded in his chapter on climbing mountains and crossing rivers, written for travellers who had to sleep in spirit-ridden country and wanted a formula to say before they did. Behind all of that sits the older and less comfortable remedy from the Zuo Tradition. If the strange rises where people have let the constant go, then the cure was never a sword or a charm.

Frequently Asked Questions

What is a yaoguai in Chinese mythology?

A yaoguai is any strange, powerful being in Chinese myth and folklore that acquired supernatural ability rather than being born with it. Most are animals, plants, or objects that lived long enough to cultivate power and take human form, though the class also covers cursed and vengeful souls. The defining traits are transformation, enchantment, and a general quality of not belonging.

Are yaoguai evil?

Not by definition. Many yaoguai prey on humans by draining their vital energy or hunting them outright, but others are harmless or even helpful, and some form friendships and marriages with people. Chinese uses separate words for the genuinely diabolical, mo, and for ghosts and the undead, gui, so translating yaoguai as demon overstates the case.

How does something become a yaoguai?

Through age and cultivation. Ge Hong’s fourth-century Baopuzi records that foxes and dholes can live eight hundred years and gain the ability to take human shape at five hundred, while tigers, deer, and hares need a thousand years or more, passing through fox and wolf forms on the way. The same discipline that lets a human seek immortality is available, more slowly, to anything else that is patient.

Which Chinese stories are full of yaoguai?

The two great sources are Gan Bao’s Soushen ji, a fourth-century collection of more than four hundred anomaly accounts, and the Ming novel Journey to the West, whose plot is largely a sequence of yaoguai attempting to eat the monk Tang Sanzang because his flesh is believed to confer immortality. The White Bone spirit and the spider spirits of Gossamer Cave are among the best known.

How do you defeat a yaoguai?

Their disguises are borrowed rather than innate, so the shape can slip and betray them, and a spirit still early in its cultivation is far weaker than one that has spent a millennium at it. Daoist and Buddhist ritual specialists deal with them professionally, and the Baopuzi preserves protective formulas for travellers crossing spirit-haunted mountains. The oldest Chinese answer is moral rather than martial: the Zuo Tradition holds that anomalies arise only where people have abandoned right conduct.

Related Entries

Huli jing, Sun Wukong, Zhu Bajie, Jiangshi, Bai Ze, Taotie, Hundun, Nian, Jiu tou niao, Yanluo, Yōkai, Kitsune, Tanuki, Oni