Negative economic growth over the Q1 quarter for South Korea:
KRW had dropped further:
South Korea's deputy finance minster says will take steps if abnormal moves are seen in forex market (translation, will buy the won to intervene if it drops too sharply).
On a smaller timeframe … you can see KRW has bounced off its lows , what you'd espect if the central bank was in to support it and indeed suspicions are raised:
