independent builder

From PCB
to inference pipeline.

// I ship products, not prototypes.

I'm Bill X — running a small studio that builds across the full stack: developer tools, electronics hardware, and AI-powered products. Based in Shanghai.

see what I'm building → get in touch
projects
>_ diagram.rs dev tools live

ER diagram visualization built in Rust. Parse and render database schemas in the browser — no server, no friction.

RustWASMCloudflare Pages
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>_ ipchu.com dev tools live

IP geolocation and network intelligence. Fast lookup API with a clean interface — no bloat, no tracking.

GoCloudflare Workersgeolocation
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>_ optionswise.cc finance live

An Android app for retail options traders in HK, SG, and MY. Track multi-leg positions, view aggregated Greeks and theoretical P&L after market close. All data stays on device.

AndroidBlack-Scholesoptionsfinance
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>_ AI Video Pipeline AI in progress

End-to-end AI-powered video production — TTS, lip-sync, avatar rendering, and automated post-production in a single desktop workflow.

CosyVoiceMuseTalkTauriPython
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writing
all posts →
How we carved out space in a saturated market Jun 22, 2026 如何在一个被占领的赛道里找到立足点 Jun 22, 2026 We built the wrong thing first Jun 22, 2026