## Language

- Always respond in Simplified Chinese.

## Code Comments

Write as few comments as possible.

Comments should be:
- short (usually under one line)
- describe *why*, not *what*
- avoid explaining obvious code
- never write tutorial-style comments
- never comment every step

## Git Commits

- Use a single short one-line message.
- Never add Claude attribution (no `Co-Authored-By: Claude` or similar lines).