闪舞步 ShanWuBu
中文
A measuring stick for dance · starting with youth DanceSport / Latin

Get it right,
and it flashes.

ShanWuBu turns “how well you dance” from one person’s impression into data you can measure, accumulate and certify. Latin first, every dance style next.

What ShanWuBu is Pilot schools and partners
  • Device test day2026-10-20
  • Launch targetJanuary 2027
  • Launch stylesRumba · Cha-cha
What ShanWuBu is

Skill training and certification for youth DanceSport and Latin

Not a follow-along scoring app, not an online course. A student records one basic figure on a phone, the engine judges it beat by beat, the beats done right get frozen by a shutter, and the data adds up to a rank.

  1. Record a basic figure

    Dance one Rumba or Cha-cha basic along with a champion’s reference video. The video stays on this phone.

  2. Turn it into a skeleton

    The phone converts the movement into a sequence of skeleton points on the spot. Only the points are uploaded, never the video.

  3. Break down the music

    The engine extracts tempo, meter, downbeats and eight-count phrases, so it knows where every beat should land.

  4. Score element by element

    Rhythm, posture and weight transfer are judged against the element library, one element at a time. Any dimension we can’t yet measure reliably is marked beta or not shown.

  5. Flash

    The beat the engine confirms you got right is frozen by a shutter: a full-screen white flash and a real shutter click. That frame, with its data stamp, becomes a “flash frame”; a full run becomes a “flash reel”.

  6. Rank

    Accumulated training data plus one standardised video exam. The engine gives a first read, a human reviews it, and you earn a basic-figure rank.

  • Entry
    Douyin Dance PracticeDance to any song and see your rhythm first. Zero barrier; your ability profile appears for the first time.
  • Core
    Latin Training HallTrain by basic figure: children through their school, adults on their own. Rhythm, posture and weight transfer measured; whatever is weakest in your profile gets built here.
  • Top
    Rank ExamStandardised video exams and a continuous rank ladder. Judged element by element, by engine and human together, replacing one-off grading tests.

All three layers share one engine, one element library, one rank ladder and one brand.

  • Not a follow-along scoring app: similarity is a means, not the product.
  • Not an online course platform: schools and coaches provide the teaching; we provide the measuring stick and the feedback loop.
  • Not any single association’s grading tool: the stick is neutral and the element library is co-signed by several associations.
Core principles

Four rules built into the architecture

These are not terms of service; they are constraints in the code. Break any one of them and the feature does not ship.

  • The engine is the only source of truth

    Every technical judgement you hear from us — rhythm, posture, weight, right or wrong — traces back to one engine computation and one element ID. AI handles tone, encouragement and navigation; it never invents technical content.

  • No number unless we can measure it

    A dimension that hasn’t cleared our internal calibration bar is marked beta or simply not shown. A wrong score does far more harm than no score.

  • Only the engine fires a flash

    The client only renders the flashes the engine emits. It never decides on its own, never adds random flashes, never lowers the bar to make one happen. The credibility of the flash is the whole brand.

  • Raw video never leaves the phone

    Pose extraction runs on the device; the cloud holds skeleton point sequences only. The server has no endpoint that can receive a video file at all.

Who it's for

One stick, four kinds of people

Students

Land the beat, get the flash

Practise basics along with a champion’s reference video. The flash reel shows which beats you got right; the long-term profile shows which dimension is improving and which needs work.

Parents

Every practice becomes visible progress

The child’s account lives under yours and has no login of its own. Schools can view, never take. Withdraw consent any time, export or delete the data any time, and nothing is lost when you change schools.

Schools

Let parents see how well you teach

Classes and assignments, completion rates, each student’s change across three dimensions, exportable weekly parent reports. A coach looks at the deviations the engine flagged and writes one comment in 30 seconds.

Champions and the committee

One stick everyone accepts

The reference library recorded by active champions is the standard itself. A joint technical committee of several associations signs off the element library version by version; it belongs to no single body.

Standards and the rank ladder

Every number points to an entry in the element library

The element library is ShanWuBu’s constitution. Think of figure skating’s element codes: each element has a definition, a way to measure it, and a passing range.

Element library

ID format DANCE-FIGURE-NN

For example RUM-BW-01: Rumba · Basic Movement · element 1. Each entry states what it is about, which keypoints and quantities are measured, the pass and deviation ranges, the one-line hint shown to students, typical errors, and the rank at which it is first examined.

  • Launch stylesRumba · Cha-cha
  • Launch figures8 each (draft, pending association review)
  • Dimensions scored at launchRhythm · Posture · Weight transfer (beta)
  • v0.1 freezeEnd of week 2 after kickoff
Committee sign-off

Co-signed by several associations, read-only once signed

The joint technical committee is chaired by Han Dong, with one technical representative per association. The element library and thresholds are signed by version; a signed version is read-only, and changes ship as a new version. Every engine output carries the library version, so results can be traced.

  • Committee membersIn preparation
  • First pilot schools (target: 10)In preparation
  • First champions (reference library)In preparation

Rank ladder v0

  1. Basic Figures, Level 1Accumulated training data plus one standardised video exam; engine first read, human review.
    Requirements · pending committee sign-off
  2. Basic Figures, Level 2Which elements are examined and where the pass line sits is for the committee to set.
    Requirements · pending committee sign-off
  3. Basic Figures, Level 3Levels that haven’t been signed never appear in the app.
    Requirements · pending committee sign-off
Privacy and child protection

Built into the architecture, not buried in the terms

Most of our users are children. Every item below is a hard constraint on the product, in plain words.

  1. Raw video never leaves the phone.Skeleton points are extracted on the device and only the point sequence is uploaded. The server has no endpoint for receiving video.
  2. Skeleton points contain nothing that identifies a person.Of the face, only the nose tip and both ears are kept, for head posture. Everything else is discarded.
  3. The video on the phone belongs to you.Replay it or delete it with one tap inside the app; by default we remind you to clean up after 7 days.
  4. Child accounts are created by parents only and have no login.A child never has a username or password; everything happens under the parent’s account.
  5. Consent is given item by item.What is collected, what it is used for, how long it is kept, who can see it: each is ticked separately. There is no “select all”.
  6. Parents can withdraw, export or delete at any time.Withdrawing consent stops collection immediately. Export covers all data. Deletion is physically completed within 30 days with a notification, after a 24-hour cooling-off period in which you can change your mind.
  7. Schools can only view.They see training metrics only, never phone numbers or family details. Unlinking takes effect immediately and no data is lost when changing schools.
  8. Children under 14 never show a real name or photo on public leaderboards.Nickname and avatar by default; parents may opt out of leaderboards entirely. Share cards default to the skeleton-only version.
  9. Parents can see who has looked at their child’s data.Every view by a school or coach is logged and visible in the app.
  10. Data stays in-country.Children’s data is de-identified before it reaches any training pipeline, and training sets are physically separated from account tables.
  11. The Douyin mini-program creates no child accounts and accepts no child recordings.Children record and upload only through the app, via their school and parents.
Exact wording in the app (final, translated from Chinese)
“The video stays on this phone and is not uploaded. After recording, the phone converts your movement into skeleton points.”Recording screen
“The video of this run is still on this phone; you can delete it at any time. For now we only show the number of skeleton points — no score yet.”Results screen
“Recording a basic figure needs the camera. The video stays on this phone.”Camera permission prompt
Roadmap

Three months to launch

Four tracks run in parallel — engine, standards, product, content — and meet at the element library v0.1 freeze. Week 12 is a buffer; nothing new is scheduled there.

  1. 2026-10-15Kickoff pack final
    Charter, milestones, architecture, element library skeleton, compliance requirements, the design of “Flash”

    Brand named 闪舞步 / ShanWuBu, primary colour electric blue, logo direction set to the “闪” wordmark.

  2. 2026-10-20Device test day
    On a real phone, end to end

    From the home screen: the “what is Flash” intro, record one basic figure, see the skeleton points on the phone, experience the white flash and shutter click. Code freeze three days either side.

  3. Week 2
    Element library v0.1 frozen and signed · first champion studio session · family accounts and child consent end to end
  4. Week 4
    Basic-figure recognition v0 · Latin Training Hall screens · pilot schools signed, data consent in place
  5. Week 6
    Douyin mini-program: song analysis + rhythm · first real student data flowing back
  6. Week 8
    Three scorers integrated · confidence gating · rank v0 exam criteria · coach comment loop
  7. Week 10
    Calibration gate review · rank v0 signed · staged rollout to 100 users
  8. Week 12around 2027-01-18
    Launch

    Store and mini-program submissions are done in week 11; week 12 is buffer only.

What counts as a successful launch

  • 10 schools and 250+ students completing at least 4 consecutive weeks of assignments
  • At least two of the three dimensions clearing the internal bar and scored for real
  • Element library v0.1 and rank v0 signed by several associations
  • Zero incidents of raw video reaching the cloud, zero missing-consent incidents involving minors
Partner with us

The three partners we need most right now

Pilot schools

The first 10

Two or three cities, two classes per school, at least two schools with adult classes. One selection criterion only: teachers willing to actually assign recording homework every week. Schools get the class dashboard and weekly parent reports, free of charge.

Champion reference library

Active champions

Record every basic figure × three tempos × three camera angles, in both the correct version and the typical-error versions. The recorder’s standing is the standard’s endorsement; likeness and motion data are covered by a signed release.

Associations and the committee

One technical representative each

Take part in writing and signing the element library and thresholds. The stick belongs to no single association, and every signature is recorded by version.

Contact

  • Email 67011076@qq.com
  • Douyin 闪舞步 (account opening soon)
  • Website shanwubu.com (ICP filing in progress; current mirror malinguo.com/preview/shanwubu)
  • Hashtag #闪舞步挑战 “Did you flash today?”

This page is updated as the project moves; school, champion and association names follow the signed versions.