Notes on investing and personal finance, software & AI, and self-improvement. https://liyuyi.com en-US Sun, 26 Apr 2026 09:52:04 GMT What this site is and why it exists. https://liyuyi.com/blog/welcome https://liyuyi.com/blog/welcome Sat, 25 Apr 2026 00:00:00 GMT A short note on the case for low-cost, broad-market index funds as the default vehicle for most of a portfolio. https://liyuyi.com/blog/why-index-funds https://liyuyi.com/blog/why-index-funds Mon, 20 Apr 2026 00:00:00 GMT What changes, what doesn't, and where I'm still figuring it out. https://liyuyi.com/blog/coding-with-ai https://liyuyi.com/blog/coding-with-ai Wed, 15 Apr 2026 00:00:00 GMT A short reflection on why difficulty is often the point, not the cost. https://liyuyi.com/blog/on-doing-hard-things https://liyuyi.com/blog/on-doing-hard-things Fri, 10 Apr 2026 00:00:00 GMT