A truly effective reversal pattern often has two characteristics: 1. The closing price strongly recovers the previous candlestick's body or key high and low points, indicating that the market not only "tests the bottom" or "tries the market," but also gains confirming buying or selling pressure. 2. The strength of the closing price determines the market's attitude; no matter how long the shadow is, if it closes at the lower end of the range or even makes a new low, it only indicates that the market does not accept the reversal.