AUD/USD hit 0.6885 at 0924 GMT after extending north from 0.6718 (Asia low)

0.6885 is highest level since Dec 13 (0.6893 was 13-week high that day)

Ascent to 0.6885 aided by Hang Seng's 3.2% gain and coal news reports

China allows four firms to resume coal imports from Australia - sources

See: nL4N33P1K7. 0.6852 and 0.6834 are now AUD/USD support points

0.6852 is the 200DMA. 0.6834 was Tuesday's high (before drop to 0.6689)