Just came across something interesting from an interview earlier this year. This legendary investor Duan Yongping, who's been in the game for two decades and built a net worth estimated around 30 billion USD, shared some pretty profound thoughts on investing and life. What caught my attention most was how he frames the fundamentals.

He says buying stocks is essentially buying a company, and if you really internalize that concept, you're already ahead of most people. But here's the thing—understanding that company deeply is what creates your real safety margin, not just looking at whether the price is below book value. Duan Yongping emphasizes that your comprehension of the business is your greatest cushion against losses.

What I found compelling is his punching machine analogy. He describes investment decisions like punching holes—in a lifetime, you only get maybe 20 shots, so each one needs to be deliberate. He's only taken fewer than 10 so far, which means there's still plenty of runway. This contrasts sharply with how many people trade constantly, thinking more activity equals better returns.

On the selling side, he pushes back against a common misconception about value investing. Too many people think it means holding forever, but Duan Yongping is clear: if fundamentals shift or better opportunities emerge, you should exit. Investment is ultimately about selling at the right time.

What's equally interesting is how he applies these principles to building culture and delegation. He built the BBK ecosystem—which spawned OPPO and vivo—not through micromanagement but through instilling values. The CEOs of those companies don't ask themselves what he would do; they ask if a decision is right and benefits users. That's culture working at scale.

On a personal level, he talks about doing what you love and ensuring people have security to take risks. A kid with emotional security dares to explore and fail. He also stresses that in the AI era, tools amplify human capability but can't replace judgment. The people who'll thrive are those who stay curious, keep learning, and combine their passions with new technologies.

What strikes me most is that at 65, Duan Yongping still talks about having many opportunities ahead and continues learning. That mindset is rare. His philosophy boils down to: do simple things seriously, stay around trustworthy people, correct mistakes immediately, and keep evolving. Pretty timeless stuff, honestly.