Volume is the only indicator can provide hint for price future action. It is important to watch how volume behaves compare to breakdown and rebound in order to determine the strength of rebound. In this case marked, breakdown showed extreme high volume (use 50 DMA on volume) but rebound came very light weight. Thus, it is reasonable to assume rebound is more likely to fail and downtrend may resume when rebound is over.
Chart PatternsTrend Analysis

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