# MiniMax H3 sealed-vessel prompt: separate vessel tilt from the liquid surface

Keep the container and its contents in different motion roles. The rigid vessel rotates about its support, while the internal liquid boundary can slosh and settle instead of staying painted onto the wall.

Original synthetic practice still, not a generated result. No model run has been performed.

Files: first-frame.png (1024×1024 actual first-frame input), first-frame.svg (editable geometric design source; do not upload as if it were PNG), prompt.en.txt / prompt.zh.txt, acceptance.blank.csv (all observations empty), task-definition.json and RIGHTS-REVIEW.txt.

## Generator

Use MiniMax H3 base image-to-video. Turn on Add end frame to expose First Frame, upload first-frame.png only, and leave Last Frame empty. Fast requires a pair and is not covered. Choose only options offered by the current interface; opening it does not submit.

## Starting state

The illustration shows a sealed rectangular transparent vessel, a visible cap, colored liquid in the lower portion and an air space above it. A short arm connects the left wall to a fixed side support, with the pivot drawn at their junction.

Track the side support and pivot separately from the vessel corners. The liquid-air boundary is a third reference. A sealed cap and continuous walls matter: this exercise does not request any liquid crossing the outer boundary.

## Steps

1. Confirm the cap, continuous vessel walls, air space and side pivot in the PNG. An open jug would imply a different boundary and should not replace this input unnoticed.
2. Ask for a small tilt only. Leave inversion, a full rotation and a dramatic splash out so the sealed boundary and internal surface remain visible.
3. If a result is later generated, compare the pivot and outer corners first, then inspect the liquid-air boundary and air pocket at the ending. Do not use a blue-pixel count as a volume measurement.

## Acceptance

- The side support and pivot stay fixed while the vessel changes orientation around them.
- The cap and walls remain closed, with no visible leak, added source or separated vessel part.
- The liquid-air boundary is not simply welded to a rotating wall; a visible air space remains.
- The ending is a small held tilt with a qualitatively settling surface, not a full inversion or pour.

## Limits

No H3 run is supplied. This is a qualitative boundary exercise, not measured volume conservation, exact refraction, a fluid solver or validation of a real container.

Read prompt.en.txt before submitting. No pass results or output video are included.