The most common way to interpret master candle is to trade its breakout.
Master candle is generally a 5 candle setup, a mother candle, and the 4 child candles that are inside the mother candle range.
If any subsequent candle outside this 5 candle sequence breaks above or below the mother candle, then it signifies that either bulls or bears have taken over and the one-sided movement may continue for some time.