The last down-close candle before price reverses and rallies away — marked the moment it forms, retested once, then defended right before it leaves a gap (FVG) on the way up.
Downtrend
Price is trending down, printing lower highs and lower lows.
TRENDRANGESWEEPBLOCKRALLY
Alternates bullish / bearish automatically
The retest doesn't always look like this
Retested immediately — like the animation above: the very next candle taps the block before price moves on.
The FVG retest is enough — if the breakout leaves a fair value gap, tapping that gap alone can satisfy the retest. Price never has to reach the block itself.
Already tested intrabar — on a lower timeframe (1m and below), price can sweep through the block while the higher-timeframe candle is still forming it. On the HTF it just looks like price left and never came back.