AugmentClaude
TutoringPM

Dyp Ask

By xbtlin· xbtlin/ai-berkshire· 0

Think through questions using the investment philosophy of Duan Yongping.

Installation

  1. Make sure Claude is on your device and in your terminal.

    Skills load from ~/.claude/skills/ when Claude Code starts up — so you need it on your machine first. If you don't have it yet, install it once with the command below, then run claude in any terminal to verify.

    One-time setup
    npm i -g @anthropic-ai/claude-code

    Already have it? Skip ahead.

  2. Paste into Claude Code or into your terminal.
    Install
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    This copies the whole skill folder into ~/.claude/skills/dyp-ask-xbtlin/ — the SKILL.md plus any scripts, reference docs, or templates the skill ships with. Safe default: works for every skill.

    Faster alternative (instruction-only skills)

    Skips the clone and grabs only the SKILL.md file. Don't use this if the skill ships Python scripts, reference markdowns, or asset templates — they won't be downloaded and the skill will fail when it tries to load them.

    Quick install (SKILL.md only)
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  3. Restart Claude Code.

    Quit and reopen Claude Code (or any other agent that loads from ~/.claude/skills/). New skills are picked up on startup.

  4. Just ask Claude.

    Skills auto-activate when your request matches the skill's description — no slash command needed. Trigger phrases live in the skill's own frontmatter; you can read them in the “What this skill does” section above.

Prefer to read the source first? Open on GitHub.

When Claude uses it

Use when you want a question reasoned through in Duan Yongping's investment philosophy — first principles, doing the right thing, and margin of safety.

What this skill does

This skill channels the investment philosophy of Duan Yongping, a pioneering Chinese entrepreneur and value investor known for his work founding Little Overlord, Step by Step High, and co-founding Vivo and OPPO. It applies his core principles—first principles thinking, business model analysis, and disciplined capital allocation—to reason through any question you pose.

What it does

  • Applies first-principles investing logic: Views stock purchases as ownership of future cash flows; rejects speculation and technical trading
  • Analyzes business models through his framework: Evaluates differentiation, moats, pricing power, asset-lightness, and user orientation
  • Applies the "Stop Doing" list: Identifies what not to do—no margin debt, no short selling, no frequent trading, no investments outside one's circle of competence
  • Assesses management and culture: Judges leaders on integrity, long-term capital allocation, and alignment with users' interests
  • Maintains intellectual humility: Admits when questions fall outside his circle of competence rather than speculating

How to use it

Ask any question—about investing, business strategy, or how to think through decisions. The skill reasons through it in Duan's voice, using his mental models: business moat strength, enterprise culture, management character, and sustainable competitive advantage. It won't give you stock tips or market predictions, but it will show you how to think like a principled, long-term capital allocator.

Note: this skill's internal instructions are written in Chinese. Claude reads them natively and will work with you in English.

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