crossing over its 9;
Last HA candle is green and closes above 5 (best signals when this candle has ONLY upper long shadow and no lower shadow -> STRONG TREND STARTING)
crossing under its 9;
Last HA candle is red and closes under 5 (best signal when this candle has ONLY lower long shadow and no upper shadow -> STRONG TREND STARTING)
When do I exit a trade?
Safe exit: when last HA candle is a or it's red (green if short)
Normal exit: when crosses under (over if short) its 9
Better TF: Daily (it can be used also on 1hr and 4hr TF)
Credits to Forex Factory community.