Moving as one
East Asian cultures share a trait that hides in plain sight: a pull toward moving in sync. Once you notice it, it turns up everywhere, from a hot pot chain in China to a K-pop stage in Seoul to an arcade in Osaka.
It comes in two kinds. One is syncing with other people, like a whole classroom bowing at once. The other is syncing with something that isn't a person, like the beat of a song. The best examples do both.
The dances
Start with the version everyone has seen. Three clips, three countries.
China. In November 2023, waiters at the hot pot chain Haidilao started dancing the kemusan for diners, and videos of it passed a billion views on Douyin, China's version of TikTok. The dance is believed to come from a wedding in Guangxi, and it's loose and goofy on purpose, all swinging knees and twisting wrists. Within weeks, staff were learning the same steps store by store, and you could order the dance by name at the chain's roughly 1,400 branches.
South Korea. K-pop has a word for its signature style: kalgunmu, "knife-sharp group dance," where every member's angles and timing match. Hearts2Hearts, an eight-member group that debuted in 2025, is a good recent example.
Japan. Avantgardey is an all-woman crew from Osaka with matching bob haircuts and school-uniform outfits, choreographed by akane. They made the finals of America's Got Talent in 2023. In a dance practice video like this one, shot on one fixed camera, you can see every dancer hit the same angle at the same moment.
These are performances. People train for them, and they're meant to be watched. The question is how far down the pattern goes.
Syncing with each other
It goes all the way down. Start at the extreme and work toward the ordinary.
Before China's big military parades, the marching units drill for months. Each rank has to form straight lines at the caps, the chins, the chests, the rifles and the feet, and instructors hold up string as a guide. If a trainee's head keeps tilting, they pin a needle into his collar, pointed at his neck.
The same precision shows up at the pool. In synchronized diving, two divers leave the board together and have to hit the water as one. At the Paris Olympics, China won all four synchronized events on the way to sweeping every diving gold.
Every country drills its soldiers and its Olympians, though. What's unusual is how far past them it goes.
Nippon Sport Science University in Japan has run a program called shūdan kōdō, "collective action," since 1966. More than eighty students spend four or five months learning to walk in formation, forward, backward and sideways, until whole lines can cross through each other at speed without a collision. They aren't soldiers. They're students. Their coach of more than thirty years says that in a self-centered world, he wants people to learn compassion by moving as a group. One of the walkers put it more simply: it's not just about you.
Nobody makes the next group do it. Every evening in public squares across China, crowds of mostly middle-aged and retired women dance the same routine to music from one shared speaker. Tens of millions take part. In 2015, after a run of disputes over noise and space, the government's answer was to publish twelve official routines.
And it starts in childhood. In Japanese schools, most classes open with kiritsu, rei, chakuseki: stand, bow, sit. One student calls it out and the whole room does it together. In many Korean classrooms the class president calls charyeot, gyeongnye: attention, bow. By graduation a student has done this thousands of times.
The clearest sign is in the language. In Japanese, when two people work well together, you say their breathing matches: iki ga au (息が合う). Korean uses the same picture. Co-stars and teammates who gel are said to match their breathing, hoheubeul matchuda (호흡을 맞추다). In Chinese, two people who click are hepai (合拍), literally "on the same beat." In all three languages, an everyday way to say two people fit together is a phrase about breath or rhythm.
Matching breath, being on the same beat: these are words about tempo. And a tempo doesn't have to come from another person.
Syncing with the world
The other half is about matching things that aren't people: a beat, a set form, the ground.
The modern rhythm game was born in Japan: PaRappa the Rapper in 1996, Beatmania in 1997, Dance Dance Revolution in 1998, Taiko no Tatsujin in 2001. Korea built its own line, from Pump It Up arcade machines to DJMAX, and some of the best-known mobile rhythm games come from China and Taiwan: Muse Dash, Phigros, Cytus. The West made Guitar Hero and Rock Band, which boomed and faded. In Japanese arcades, the rhythm cabinets never left. The whole genre is one idea. A pattern comes at you and you match it, and in many of these games the best grade is literally called "Perfect."
Karaoke is the everyday version, and it's a Japanese invention too. It became noraebang, "song room," in Korea and KTV in China. You sing along to a track and scrolling lyrics, and Japanese machines score how closely your pitch and timing follow the melody. There are TV shows about chasing a perfect 100.
Martial arts put the template in the body. Karate has kata and taekwondo has poomsae, both usually translated as "form." Wushu, the Chinese sport, has taolu, "set routine." Each is a sequence set in advance, and a big part of your score is how exactly you perform it.
Then there's balance, which I think is the deepest kind of syncing with the world. A beat is a pattern the world hands you. Gravity and the ground under your feet are another, and balance means matching your body to them every instant, with no time to think. Skateboarding is timing and balance against a course, and Japan won five of the eight skateboarding golds across the Tokyo and Paris Olympics. In Paris, Yuto Horigome was in seventh place with one trick left. He landed it for a 97.08 and won his second gold.
Figure skating is balance on a blade. Japan's Yuzuru Hanyu won back-to-back Olympic golds, and Kaori Sakamoto won three straight world titles. Gymnastics has an event named after it, and at the Tokyo Olympics China took gold and silver on the balance beam. Breaking is balance plus music. Musicality was one of the five things judges scored at Paris, where Japan's B-Girl Ami won the first women's gold and China's B-Girl 671 took bronze.
Now look back at the first three clips. A dance group isn't doing one kind of sync. The members match each other, and all of them match the song. It's both halves at once, which is why it's the cleanest example of the whole pattern.
Where it comes from
This part is a guess. You can't draw a straight line from Confucius to a waiter dancing at a hot pot chain. But the two halves of the pattern line up almost exactly with two old philosophies.
Confucianism is about harmony between people, and its main tool is ritual: set forms for how to act, from how you bow to how a ceremony runs. Everyone has a part, and order comes from everyone performing theirs exactly. Music was the other half of the program. The Book of Rites says music unites people and ritual gives each one a place, and Confucius said a person is "completed by music." That's syncing with each other: shared forms, matched together.
Daoism is about moving with the way things already are. The clearest picture is a story in the Zhuangzi, written around 2,300 years ago. A cook named Ding is carving an ox for his lord, and every move of his hands, shoulders and feet is in rhythm, as if he were dancing or keeping time to music. When the lord praises his skill, Ding says what he cares about goes beyond skill: the Way, the Dao that Daoism is named after. He follows the natural structure of the ox and slides the blade through gaps that are already there, which is why his knife has lasted nineteen years and is still as sharp as new. That's syncing with the world: being in rhythm with the thing itself.
So the pull toward sync has two targets: each other, which Confucianism prizes, and the world, which Daoism prizes. Music is where they meet, because a song is a pattern outside you that everyone can share at once. Put a group on stage with a song and a choreography and you get all three together: the form, each other, and the world.