Hello, I'm Wen Da.
I build systems with AI, and I'm building a 紫微斗数 engine to the same standard.
Product manager, now Applied AI Engineer. I write down how I build things with AI so you can copy it, and I'm building software that reads a birth chart the way a practitioner does.
Two things I work onpick a door
01 — for builders
Building with AI
Guides, methods and project write-ups. How a system was put together, what it cost, and where it broke.
- After vibe coding failed
- Evals before features
紫微斗数
Essays on charts, luck, and the gap between a trigger and a choice. A chart is a mirror, not a verdict.
- Your Mental palace is inner weather
Currentlyupdated weekly
(01)
The chart engine
Tracing a claim back through stars, palaces and 四化 so a reading can be checked.
(02)
Evals at work
Building the review loop for an asset manager's agent workflows.
(03)
Writing it down
One piece a week, extracted from work already recorded rather than invented.
Working on something, or want a reading?
I read everything that arrives. No newsletter attached to this.