In the given context, shadows are the parts of the Japanese candle indicating the maximum and minimum price rates in the given time period charted by the candle. If the shadows are short, it means the value of the traded asset ranged around the open and close prices of the given period. If the shadows are long it indicates active trading during the period, with prices drifting away from the open price, only to come back around for the close price. A long top shadow with a short bottom shadow attests to a period dominated by bulls, and vice versa.
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