For the 3rd day in a row, the Hong Kong Monetary Authority (HKMA) intervened in the FX markets and for the 3rd day in a row, failed to lift the Hong Kong Dollar off the lower limit of its peg band. https://www.zerohedge.com/news/2018-04-13/hong-kong-monetary-authority-fails-rescue-dollar-3rd-day
is it connected to the tariff issue? is it an indirect warning that the yuan can be devalued against the $US
This is due to spiking USD rates overseas. Anyone trying to keep their currency strong against the USD is going to have trouble like this.