Trump and Xi have spent much of the last few weeks tossing tariff grenades across the Pacific Ocean as retaliatory retaliations grow ever stronger in rhetoric and potential escalations.

Then this week, Trump seemed to back away from his most serious threats (direct Chinese investment restrictions).

We wonder if this is why…

Since Trump started to rattle his trade war sabre, the last three months have seen the offshore Chinese Yuan tumble over 6% (crashing almost 4% in the last two weeks alone)…

Nothing happens by accident in China and this massive drop in the value of the Yuan mirrors the violent devaluation, snap in 2015…

All of which suddenly makes US imports to China 6% more expensive than they were in Q1 – a stealth tariff that no one is talking about.

And before this is dismissed as just the mirror of USD strength, we suggest the following chart shows very clearly the PBOC allowing the Yuan to weaken notably against just the dollar while – until the last few days – maintaining Yuan’s buying power against the rest of the world.

However, as Capital Economics points out, if the PBOC is using the exchange rate to fight back against the US, it is pulling its punches: the PBOC’s daily reference exchange rate has in the past few days been stronger than market rates might have suggested, not weaker.

It is of course still notable that the PBOC has done relatively little to stand in the way of the currency slide, even if it isn’t directly responsible for it. It always argues that the exchange rate is driven by market forces.

But its tolerance will probably only go so far, given the painful experiences of 2015 and 2016: any benefit to exporters would be swamped if depreciation triggered economic and financial instability.

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