Observations:
------->>After trending upwards, a strong breakout is given above 1700 level, which is previous resistance got broken strongly.
------->>Now with opening a huge gap down, showing bearish pressure pushes the price towards downside, this is not a sign of reversal in HDFCBANK.
It's an opportunity to enter long again from these levels.
-------->>Keep on buy side as long as price is above 1600 levels.