August 14, 2025

Japanese Steppe origins: Breaking precious mirrors as a burial ritual

Before getting into the main topic, I'll just link to some observations I made in the comments to the previous post -- about a Korean royal clan claiming descent from the Xiongnu. This establishes that my parallel investigation of the Steppe, and specifically Xiongnu, origins of their Japanese neighbors is already on solid ground in Southeastern Korea.

The clan that united the kingdom of Silla, which then went on to unify all of Korea, was the Kim clan from Gyeongju. Their legend of their origins is that they descend from a Xiongnu prince, who the Chinese call Jin Midi, but who they themselves call Kim Al-chi. I immediately noticed that "alchi" is one of the variant names of the Alat tribe -- the one whose name means "piebald horse" in Turkic, and who were the ruling clan of the Xiongnu confederation.

Did the unifying clan of Korea really descend from Xiongnu rulers? Well, they made this claim themselves, it's not somebody like me 2000 years later attributing it to them. And Korean scholars note how similar the grave goods are for Silla and the eastern Xiongnu.

I think the Japanese chose to make their Xiongnu origins cryptic due to the rivalry between Wa / Yamato and Silla. Yamato was on the losing side of the Tang-Goguryeo War of the 7th C, whereas Silla was on the winning side (allying with Tang China). They wouldn't try to invade Korea for many centuries after that, and wanted to distance themselves from their geopolitical rivals. Since the Xiongnu origins of the Kim clan were well known back then, the Yamato decided not to make the same claim, lest they be seen as copying Silla, or engaging in sibling rivalry.

But all the signs are there if you look.

* * *


Which brings us to the main topic of this post -- the burial rituals of the Xiongnu and other Steppe cultures of that time, as well as the early Wa culture in Japan. (And Silla, too, of course, but I'm not focusing on that.)

To reiterate an ongoing theme, we have to try to avoid using examples of convergent evolution when linking two groups together. What causes two groups to converge on the same outcome is some kind of utilitarian, economic, materially motivated force -- like getting more calories in your diet.

Group A drinks milk, and group B drinks milk -- are they descended from a common ancestor? Maybe, but maybe not -- maybe they each independently took up pastoralism, and began consuming the dairy products of their livestock. Both of them drinking milk doesn't mean they share an ancestor, it may mean that pastoralists will end up consuming dairy products, whether they share an ancestor or not.

Likewise, quite a few pastoralist groups from the Steppe practice horse sacrifice and horse burials, including Indo-European cultures from the West and Altaic cultures from the East. But that doesn't mean they share a cultural ancestor -- it may just reflect that fact that both have adopted horses, which makes horses very important, and so, what greater sacrifice could they make than sacrificing a horse?

We want to look for examples that are not steered by a cold, clinical Darwinian, economic, utilitarian incentive -- things that are more like a shibboleth. I say "po-TAY-to", you say "po-TAH-to" -- and that proves we belong to two separate cultures, whatever else we might share. Pronouncing the word either way does not help you communicate the meaning more efficiently, it is simply a random inconsequential arbitrary coin-flip that we have constructed in order to distinguish the members of group A vs. group B.

When I get to clothing and jewelry styles, we'll really see this idea take off -- what does it matter if you close your robe left-over-right or right-over-left? The robe closes just the same. But in ancient East Asia, this seemingly meaningless distinction made all the difference between who was civilized (left-over-right) and who was barbarian (right-over-left).

And yes, people in Japan at that time, and up until the Nara period (around 700 AD), were firmly committed to wearing their robes in the Northern barbarian style, just like the Xiongnu. So were the Tocharians, an Eastern Steppe group who adopted an Indo-Euro language (the only known Eastern culture to do so), but remained true to their origins in dress.

Similarly, superstitions may have a utilitarian logic to them -- in which case, it means nothing if two groups share a superstition. I was looking up Japanese superstitions, and one of them is to not whistle indoors -- it turns out, almost every culture in the world shares this superstition. Probably because everyone perceives it as rude, as though you're trying to be a band-leader in an impromptu concert that nobody asked for. So it's frowned on all over the world, and it cannot be used to prove that Russians and Japanese descend from a common ancestral culture where this superstition was born. It was born in multiple places and at various times, independently of each other. It's convergent evolution.

So when we turn to burials -- the main material trace that is left in the archaeological record for us to study in the present about cultures from the past -- we have to look for examples that look like shibboleths, not practices that many cultures could come up with on their own.

E.g., "monumental size of the grave to reflect the elite status of those buried there" -- yeah, no shit, what else are they going to do, make tiny graves for the elite and mega-tombs for the commoners?

We also have to take into account the notion of "degrees of freedom" from statistics, or how much room for variation there is. You might think, Well, mega-size doesn't show that two cultures share an ancestor, but maybe the particular shape of their mega-tombs could play the role of a shibboleth.

Only problem is -- how many 3D shapes are there to choose from for a tomb? You've got your box-like shape, your rounded mound shape, a pyramid shape, and that's about it, for a single structure. There are far, far fewer possible shapes to build a tomb in, than there are possible sound sequences to convey the meaning of "father". If two languages share a word for "father", that's highly suggestive of shared ancestry. If they both build mounded tombs, that's only slightly suggestive.

So although mounded tombs were popular throughout the Steppe in ancient times, from the West to the East, and although the most famous tombs in all of Japanese history are indeed gigantic mounds (Kofun, giving their name to the period in which they were built, roughly 300-600 AD), that is only slightly suggestive of Japan's Steppe origins.

It certainly doesn't *contradict* the claim that Japanese culture has a Steppe component -- it's in line with the claim, but it's a weaker piece of confirming evidence than some example where there's lots more room for variation and more of a shibboleth nature to it.

* * *


Enter one of the most bizarre and distinctive burial rituals in world history -- the deliberate breaking of finely crafted, highly valuable, aesthetically adorned, built-to-last mirrors. Not just putting a crack in them with a little whack from a hammer, but breaking them into at least 4 separate fragments on average. That's no accident -- especially when mirrors in the old days were made of (polished) bronze, which is much harder to fragment than glass. And these were fairly large mirrors, around 8 inches in diameter, not a little hand mirror -- something that impressive, you'd figure they would want to preserve in order to show off as a status symbol.

This is a great example because we can rule out utilitarian, Darwinian, etc. incentives for two cultures sharing this ritual. It's breaking something useful, functional, and valuable -- it's going against the utilitarian motive. Even in the figurative sense, where the grave goods are not meant to be used by the living, but by the dead in the Otherworld, breaking the mirror deprives the deceased of its use or exchange value in the afterlife.

Imagine waking up on The Other Side, surrounded by mirror fragments -- "Gee, thanks a lot for making them worth a lot less, in case I wanted to trade them for something that's only available in the Otherworld, which you couldn't provide me with during the burial. Or in case I wanted to see what I look like dead, or if I wanted to reflect light for some reason. Whose idea was it to break them into pieces?!"

A superstition about not breaking a mirror, could arise independently through convergent evolution. Mirrors are functional, utilitarian, valuable things -- don't break them, or else bad things will follow. Breaking them on purpose is the opposite -- that must be due to some unclearly motivated shared tradition.

BTW, as for the modern American superstition about "break a mirror, and you'll get 7 years of bad luck", this is claimed with absolutely no evidence to stem from "ancient Greece and Rome" -- always a telltale sign of bullshitting. We don't come from Greco or Roman cultures, even distantly. No one can point to an author of the ancient world saying it's bad luck to break a mirror, cuz you'll get 7 years of bad luck. Or some other number of years of bad luck. Or even explicitly saying that breaking a mirror is unlucky.

So the "breaking a mirror is unlucky" superstition is likely much more modern than that, from the era when mirrors became commonplace and the targets of superstitions. At that point, multiple cultures could independently come up with a superstition against breaking mirrors, in America or wherever else.

Back to the ancient Steppe -- other cultures did in fact bury their dead with the same Chinese bronze mirrors (or imitations), but without the widespread practice of breaking them. That does *not* suggest a common origin for them -- functional, valuable, finely crafted things will be sought after as grave goods no matter who they are.

As it turns out, both the Western Steppe and Han China included bronze mirrors in their grave goods, but nobody thinks they share an ancestor. They both independently figured out that these things were valuable and impressive feats of craftsmanship, so why not include them with all the other goodies in the grave?

It was only the Eastern Steppe groups that fragmented the Chinese bronze mirrors as part of their burial rituals. See this review article of the broken bronze mirror phenomenon, which surveys the Western Steppe as well as the East.

It began with the Pazyryk culture from the Altai Mountain region during the mid-1st millennium BC. They are misleadingly called "Scythian" as though they were Indo-Euro-phone, culturally Iranian, or primarily Western Steppe, none of which is true -- they seem to be proto-Turkic if anything, the western frontier of the Eastern Steppe.

This practice continued, most famously, among the Xiongnu, around the turn of the millennium...

And as fate would have it, among the Kofun burials in Glorious Nippon, in the early 1st millennium AD (and in Silla). As with the Pazyryk and Xiongnu, not all of the Chinese bronze mirrors are broken in Kofun burials, but a large number of them are -- perhaps dozens of mirrors each broken into 3 or 4 fragments on average, within a single site. And this practice was not just one fluke site, but dozens of locations all around Japan.

Nor was it done only in peripheral or culturally deviant regions of the nascent Japanese nation -- if anything, it was done in abundance at the very heart of the soon-to-be Yamato state, around Nara. See this discovery of over 100 mirrors broken into nearly 400 fragments, from the Sakurai Chausuyama Kofun near Nara, dating from the 3rd C and belonging to a very elite individual, possibly the legendary Queen Pimiko herself.

This early date is also helpful to establish that these Steppe influences of Japanese culture did not only arrive during the course of the Kofun era -- they were there before 300 AD. And it is helpful to show that these influences are not "Korean," as though they were confined only to Korea and Japan. Rather, both of them are extensions of a broader Eastern Steppe tradition, brought by Steppe people who crossed the mountains into the Korean peninsula, the first wave going further into Japan, and a second wave remaining in Korea (the Koreanic speakers).

* * *


These bronze mirrors, and mirrors in general, are so important in Japanese culture that one of the three imperial regalia -- the special material items that legitimize each emperor, which are passed on to each new holder of that office -- is an ancient bronze mirror, the Yata no Kagami. (We'll get to the Steppe origins of another of the three, the magatama or curved jade jewel-bead, in the next post.)

Mirrors have always been important in the rituals of Shinto, as symbols of the sun. It seems like the Eastern Steppe cultures view mirrors as solar symbols -- miniature suns that you can wield with your own two hands, throwing bright beams of light wherever you please, like a demi-solar-god all by yourself. The Western Steppe cultures view them more in terms of reflecting the physical likeness of a person, not as pre-industrial spotlights.

And wouldn't you know it? While browsing the Wikipedia article on "mirrors in Shinto," I nearly fell out of my chair looking at how the mirror is displayed in a typical Shinto ritual. See the center top of this image, where the mirror lies between the 4 animal statues. The mirror itself is a disc, and it's resting on a stand that is curved very much like a crescent moon

There's that distinctly Xiongnu visual shibboleth again! A solar disc, with a crescent moon underneath, opening up to the sun, which remains in use on the national flag of Mongolia. We'll see that in Kofun-era earrings, in the post on clothing styles.

Do an image search for "Shinto mirror," and you'll see all sorts of variations on this theme, but they all involve a stand that is crescent and opening up to the solar disc. I can't determine when this combination of items began, but it has endured right up through the present.

Somewhere along the way, the Steppe fixation on the "sun and moon" duo was downplayed, and the crescent shape was carved in the shape of clouds or sea waves or some abstract thing. But who ever depicts clouds as forming a shape whose border is an upward-opening crescent? Or sea-waves depicted with that same border shape? It's obviously a crescent moon, and that border shape has been preserved -- even though its interior has been (re-)decorated to distract from its moon-focused origins.

I wonder if this Shinto mirror-and-stand configuration goes back to the Xiongnu, and the smaller golden "disc with crescent" items that are found among the Xiongnu, or the identical Kofun-era earrings, are just jewelry representations of their sun-and-moon religious rituals, which would have involved one of those large bronze mirrors as the solar disc, supported by a stand in the shape of an upward-opening crescent moon. IDK, something to think about / look into.

* * *


Like many ancient facets of Japanese culture, they have been preserved or served as inspiration for even the most hi-tech and futuristic domains of contemporary Japanese culture -- like video games. In The Legend of Zelda: Twilight Princess, there's a crucial item called the mirror of twilight, and it is in the shape and color of an ancient Chinese bronze mirror -- and it also lies in 4 fragments, which must be re-assembled in order to use it as a massive light-reflector.

In an earlier game in the series, Ocarina of Time, the player uses a mirror shield to reflect beams of light in order to trigger doors opening and such. However, it doesn't resemble the ancient bronze Chinese mirrors, and does not lie in fragments. Even earlier, in A Link to the Past, the mirror shield doesn't bounce rays of light, but absorbs them. And even earlier, in The Adventure of Link, the protagonist helps a townswoman find her lost mirror and is rewarded for it -- it's not shown at all, though, let alone in an ancient Chinese form, or lying in fragments, or reflecting light rays. But these are all still part of the enduring Japanese fascination with mirrors.

* * *


Finally, what the hell *was* the reason for breaking the mirrors back then? It doesn't matter for the purposes of linking various cultures together that share the practice. But just to try to get inside their heads...

I actually came up with a similar concept as the Twilight Princess video game, before even reading about it. None of the other grave goods, whether highly valuable or not-so-valuable, are deliberately broken. They're intact, in good working order, and meant to aid the deceased in some way.

Mirrors left intact would be the same -- an aid to the deceased.

But the ones that were broken -- could have been a reflection of the corpse itself. Something that used to be a finely crafted, highly valuable, built-to-last creation -- but that now finds itself at the end of its use, decaying into pieces, losing its order and structure, never to be used again...

Until some fateful event in the future, where the dead are brought back to life, and where these mirror fragments would be supernaturally placed back together, without the awkward glue or whatever means that a person would use, but actually restored to their original state and in their original working order -- with no cracks, glue, or anything else like that to be seen.

Until that day comes, both the corpse and the mirrors will lie in their fragmented, decaying state, unable to function as they were originally created.

Maybe they didn't have the apocalyptic revival of the dead and restoration of the mirrors, as though Humpty Dumpty had been miraculously put back together again. At the very least, they could have intended the broken mirrors to stand for the broken body, broken family, broken social hierarchy, now that this elite individual has been retired from their role.

Since they viewed mirrors mainly as sun symbols, i.e. projectors of light, then a broken mirror is tantamount to a snuffed-out candle for some other culture where candles represent light projection and mini-suns.

Such an important person dying is like the sun and moon themselves going dark in the sky.

We know that ancient Altaic people used to view the sun and moon as mirrors-in-the-sky -- see the earlier post on their creation myth, which is mainly about churning the primordial sea with a divine staff in order to make land-masses out of the resulting sea-foam on the surface. One of them also mentions that during the age of creation, two mirrors were placed in the sky, which brought light to the universe -- the sun and the moon.

So, far from being a sign of disrespect toward the dead, the broken mirror was the ultimate material expression of grief from the mourners.