Mio is not a chatbot app. It's a relationship simulator that happens to run on AI. The product IS the relationship — not the chat interface, not the model, not the feature set. Here's what that means for every design decision from onboarding to monetization.

A user said 'the onboarding is too much work.' It sounded like a UX complaint. It was actually the catalyst for rethinking the entire product philosophy — from 'configure first, chat later' to 'everything emerges from the relationship.'

Our Chinese blog articles read like translated English — stiff, academic, lifeless. A reader noticed. We spent a week researching what makes Chinese 公众号 articles work, built a 435-line style guide, and rebuilt the entire writing pipeline. Here's what we learned about the gap between 'correct Chinese' and 'native Chinese.'

Adding 37 travel landmark cards to ÉLAN in a single session revealed that the real problem isn't content creation — it's discovery. Region-first tabs don't work when users think in vibes, not geography. Here's how we rebuilt the browse experience around a two-axis vibe + region filter, and what it took to orchestrate 37 card definitions, 37 covers, and 444 sample images with parallel AI agents.

Shichuan started as a jewelry content generator. One question — 'Why not full pipeline for all categories?' — turned it into a 7-domain e-commerce content platform with AI images, XHS text cards, platform-aware formatting, client-side video, and 95%+ margins at 99 RMB per suite.

Most TTS gives you a voice. Doubao claims to give you emotions. I ran a systematic experiment — 30 audio samples across stock voices, cloned voices, and 3 emotion control methods — to find out what actually works. Listen for yourself.

Complete integration guide for Volcengine Seed ASR bigmodel — the submit-then-poll REST API for Chinese speech-to-text. Console setup, two-step async flow, fallback chain pattern, cost tracking, and 8 gotchas about v2 vs v3 APIs that will save you a day of debugging.

Complete integration guide for Volcengine Doubao Seed-ICL 2.0 — voice cloning, natural language emotion control via context_texts, per-sentence multi-call synthesis, NDJSON response parsing, and 7 gotchas that will save you hours of debugging.

A runbook you can hand directly to Claude Code to execute. Covers sing-box multi-protocol deployment (VLESS-Reality / Hysteria2 / TUIC-v5), SSL certificates via Cloudflare DNS API, nginx subscription server with dynamic traffic stats, and Clash Verge / Shadowrocket client configuration. Replace the placeholders, hand it to your agent, hit go.

ÉLAN's target user takes photos on her phone and posts from her phone. A web-only product misses the core use case. Here's what actually happened when I brought a Next.js app to React Native via Expo — what transferred, what didn't, and the SSE streaming hack that saved the project.