# Standing bow: a hip hinge, a pause and one return

Write a bow whose torso changes angle relative to the thighs, then returns upright once. Separate that hinge from a head nod, a knee squat or the entire drawing rotating as a rigid card.

**Original geometric practice input; untested teaching method. No H3 call or generated result is included.**

## 1. Input and task goal

A side-view adult mannequin faces right, standing with two separated shoe profiles on a level floor. A small belt block marks the hip area; a straight tunic edge runs from shoulder to belt. The hands hang beside the thighs, the head is unobstructed, and open space in front allows a modest forward lean. The belt and tunic are plain invented shapes, not a garment product.

[PNG](/learning-assets/parallel-20261022-b/standing-bow-hip-hinge-return/S01-first-frame.png) · [SVG](/learning-assets/parallel-20261022-b/standing-bow-hip-hinge-return/S01-first-frame.svg) · [Complete practice kit](/learning-assets/parallel-20261022-b/standing-bow-hip-hinge-return/practice-kit.zip)

## 2. Action phases and fixed relationships

Track shoulder-to-belt and belt-to-knee directions separately. The shoulder line may move forward and down while the belt area stays above the planted legs. The head follows the upper body without supplying a second nod. Hands may travel slightly with the torso; pinning them to screen coordinates would stretch the arms.

| Phase | Relationship to inspect |
| --- | --- |
| 1 | Upright: torso and thigh directions are readable. |
| 2 | Hinge: the torso inclines forward relative to the thighs. |
| 3 | Pause: one bowed pose is visible with both soles still planted. |
| 4 | Return: the same torso rises to a quiet upright ending. |

Phases specify order, not exact timing controls. The review diagram is an authored checklist, not output frames or an ending-frame input.

[Review guide / 观察图](/learning-assets/parallel-20261022-b/standing-bow-hip-hinge-return/review-guide.svg)

## 3. Prepare one manual task

1. Use the supplied side view to compare the tunic edge with the forward thigh. Do not judge a bow by face direction alone; a head nod can move the nose without changing the torso.
2. Describe a modest hinge and one return. Keep the knees nearly unchanged instead of requesting a deep bend that would turn the task into a squat.
3. During review, compare the torso-to-thigh relation at the deepest visible lean. Then check both soles and the belt area for translation across the floor.
4. Inspect the reversal from lean to upright in the same take. A cut at the lowest position or a freeze followed by a new body does not show a return.

In the [image-to-video workspace](/generator/image-to-video), manually choose the MiniMax H3 base mode and place the clean PNG in the first-frame role, leaving the ending frame empty. Check that the current interface supports this combination and inspect its actual estimate; if unavailable, do not submit or put the review diagram into another slot. Downloads do not upload files or start tasks. This exercise assumes no duration, resolution or frame-control guarantee.

## 4. Complete original prompt

```text
Begin from the original side-view standing adult mannequin, facing picture right with both shoes on the level floor. Keep the camera and floor still. The torso inclines forward gently from the hip area into one modest bow; the upper body changes angle relative to the thighs. Keep both soles planted, with no step and no pronounced knee squat. The head follows the torso without a separate nod, and the hands hang beside the legs with small natural accompanying movement. Pause briefly in the bowed pose, then return the same torso to upright once and settle. Preserve limb length and the shoulder-to-belt connection. No rigid rotation of the whole body, fall, chair, cut, repeated bow or change of character. This wording requests visual order, not a measured joint angle.
```

[Prompt / 提示词 TXT](/learning-assets/parallel-20261022-b/standing-bow-hip-hinge-return/prompt.en.txt)

## 5. Inspect the actual sequence

Fill observations only when real footage exists. Watch the full take, pause around the relevant contact, separation or order change, then replay at normal speed. Timecode, outcome and note cells start empty. Use pass, fail or not-observable; an obscured event is not a pass.

- Both shoes remain at their opening contacts.
- The torso-to-thigh angle changes, rather than only the face direction.
- A readable bowed pause appears before return.
- Legs do not collapse into a deep squat.
- Torso and pelvis remain connected without stretching.
- One continuous return ends upright without a second bow.

[Acceptance CSV / 空白验收表](/learning-assets/parallel-20261022-b/standing-bow-hip-hinge-return/acceptance.blank.csv) · [Run log / 任务记录](/learning-assets/parallel-20261022-b/standing-bow-hip-hinge-return/run-log.blank.csv)

## 6. Change one failed variable

- Only the head nods → revise only the torso-relative-to-thigh sentence; do not increase head movement.
- Whole figure tilts like a board → emphasize only the hinge location and unchanged foot contacts.
- Knees drop into a squat → reduce only requested knee change while retaining the torso hinge.
- Bow repeats → make the single return and final hold explicit; inspect the complete ending.

## 7. Retain evidence and task boundaries

Save observations from upright, deepest visible lean and returned upright. The drawing and method establish no cultural standard of bowing, joint-angle accuracy or safe physical exercise.

The eye-and-head owner deliberately keeps the torso fixed. The seated-rise owner changes hip height and seat support. The magician prompt uses two bows as one event inside a costume-swap spectacle; this independent input and review task isolates torso-versus-thigh motion and its reversal.

The package contains original text and a program-drawn fictional mannequin, with no real-person material or third-party images. The original geometry may be used and adapted for this project and practice. It does not establish permission for a real likeness or a third-party brand. See the [source and rights record](/learning-assets/parallel-20261022-b/standing-bow-hip-hinge-return/RIGHTS-REVIEW.txt).

- [Sit to stand: support points](/templates/one-person-sit-to-stand-side-view)
- [Eyes first, head second](/templates/eye-gaze-head-turn)