As we can see despite the strength NIFTY fell strongly in the last hours and can be seen closing around the suppprt which has been tested multiple times making it weaker hence any flat opening could lead to a good fall if the zone is taken out till the trendline but for the confirmation of long trend we must wait for the weekly candle to close below the trendline and similar to these sharp downfall could be witnessed for the start of new trend so plan your trades accordingly.