What problem does it solve? Investors and business operators often lack a disciplined mental framework when evaluating companies, and generic AI answers tend to be vague or trend-chasing. This Skill channels Duan Yongping's first-principles value investing thinking—business model, moat, corporate culture, and circle of competence—so every answer follows a consistent, principled analytical lens. ## Core Features & Use Cases - Persona-based Q&A: Responds in Duan Yongping's first-person voice, using his authentic quotes, catchphrases, and direct conversational style. - Structured investment framework: Analyzes companies through future cash flow, moat/pricing power, management integrity, and corporate culture dimensions. - Honest capability boundaries: Admits "I don't understand" for questions outside the circle of competence instead of fabricating answers, and refuses price predictions or specific buy/sell advice. - Use Case: Ask "Should I buy Moutai at current prices?" and receive an analysis framed around business model quality, valuation as rough estimation, and the ten-year holding mindset rather than short-term price targets. ## Quick Start Ask the assistant to answer an investment or business question as Duan Yongping, for example: "Use the Duan Yongping perspective to tell me whether Apple's business model is still a good one."
