06 / ENGINEERING NOTES
Engineering Notes
Long-form notes on AI, engineering systems, and organizational evolution.
Building HHY Language: From Flow Philosophy to a C Runtime
A ground-up account of HHY Language v1.0: why flow is the central abstraction, how the lexer, parser, AST, checker, and runtime fit together, and what turns a language implementation into a dependable system.
Read articleFrom HTML Timelines to Verifiable Renders: How I Build HHY Videos with HyperFrames
A retrospective on using HyperFrames for HHY launch films, tutorials, courses, and vertical shorts: defining evidence first, then organizing scenes, sound, real assets, and automated checks into a repeatable production workflow.
From v1.7.0 to v1.7.1: Giving Every HHY Commit a Clear Boundary
From the optimizing compiler back to resource ownership, failure recovery and controlled concurrency: my engineering decisions in HHY v1.7.1, its measured baseline, and the path toward shared state, coroutines and distributed transactions.
Building HHY CMS: Turning Website Delivery into a Reusable Product
An engineering account of HHY CMS 0.1.2: HHY Web and MySQL, recoverable installation, draft and publication boundaries, theme separation, and the responsibility of building software for other people.
From v1.5 to v1.7: Building a Verifiable Optimization Pipeline for HHY
From database resource lifetimes to VM profiling, calls and unwinding, then HIR/MIR: the engineering behind HHY v1.5.0–v1.7.0, and why shipped optimizations remain opt-in.
HHY Database 1.0: Building Database Access for Long-Running Applications
What Go database/sql, Python DB-API, and PHP PDO teach me about HHY's database layer: connection ownership, bounded pools, transaction scopes, streaming, exact types, and uncertain commits.
GPT, Down to the Scalar: How I Read MicroGPT
Tracing Karpathy's MicroGPT from characters and computation graphs through causal attention, cross-entropy, Adam, and sampling—with worked examples and diagrams of the complete learning loop.
From Scripts to a Resident Service: How I Built the HHY Web Runtime
A retrospective on the HHY v1.4.3 Web Runtime: from a repeatedly callable interpreter and HTTP request parsing to GET/POST, streaming backpressure, multiple workers, and the performance boundaries behind one million requests.
Travel Is Not a Checklist: How the Road Keeps Revising My Map of the World
Distance and cities are only traces. What travel truly leaves behind is the repeated collapse of assumptions—and a new understanding of places, people, technology, and myself.
Beyond the Model Race: How I Read the Cross-Pacific AI Chessboard
A systems view of Dimension Capital's China AI memo: how compute scarcity, engineering efficiency, open weights, energy, commercialization, and capital shape the U.S.–China AI landscape.