Where this started and what it became
The site began in 2016 out of a specific frustration: most interview advice available online was either too generic to be useful or too narrowly focused on a single industry to transfer anywhere else. After going through several hiring processes in quick succession — some successful, some not — it became clear that the gap was not in tips or tricks but in structured thinking about what interviews actually test and why.
The early version of xudaniu was a private set of notes. It turned into a public site when a few colleagues asked to read them. The format has changed considerably since then, but the core intent has not: to write about interview preparation in a way that is specific enough to be actionable and honest enough to be trusted.
Every piece published here reflects direct experience — either from preparing for interviews, conducting them, or both. Nothing is sourced from secondhand summaries or aggregated from forums. The perspective is singular and consistent, which makes it easier to disagree with but also easier to apply.