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The RSI value reflects the strength of the upward trend relative to the downward trend in the short term. In other words, the larger the RSI value, the stronger the upward trend relative to the downward trend; the smaller the RSI value, the weaker the upward trend relative to the downward trend.
1. RSI Bullish and Bearish Signals
RSI > 50 is considered a bullish market; RSI @ 50 is considered a bearish market.

2. RSI Reversal Signals
RSI > 80 indicates overbought conditions and may reverse downward; RSI @ 20 indicates oversold conditions and may reverse upward.
1. When the RSI forms an M top or head and shoulders top pattern above 80, it is considered a downward reversal signal, and selling is recommended, as shown in the figure below:

2. When the RSI forms a W bottom or head and shoulders bottom pattern below 20, it is considered an upward reversal signal, and buying is recommended, as shown in the figure below:

The essential internal logic of washing and dumping:
Washing the盘: Making retail investors willing to sell their chips even at a loss (creating panic);
Dumping: Making retail investors willing to buy chips even when the price of the currency is high (creating greed).

Washing
The price of the currency continues to fluctuate at a low level, and after breaking through the resistance level, it continues to fluctuate:

The following classic washing intraday chart appears simultaneously:

The price of the currency shows a slight rise, then falls below the yellow moving average, and continues to fluctuate downwards, inducing retail investors to short and cut losses, facilitating subsequent rises.
Dumping
The price of the currency continues to fluctuate after rising to a high level:

Signal 1: Trading volume decreases, but the coin price rises sharply
Signal 2: Trading volume decreases, but the coin price falls sharply

Signal 3: Trading volume increases, but the coin price does not show significant fluctuations

Signal 4: Trading volume decreases, but the coin price shows significant fluctuations

Signal 5: Trading volume decreases, but the rise in coin price increases
Signal 6: Trading volume decreases, but the decline in coin price increases

Real case analysis:

Number 1: Volume and price rise synchronously, the volume-price relationship is normal;
Number 2: Volume increases while price decreases, the volume-price relationship is abnormal, the bearish force surpasses the bullish, and it appears at the resistance level, likely leading to a reversal;
Number 3: Trading volume increases, but the decline decreases, the volume-price relationship is abnormal, a large amount of buying occurs, buying pressure increases, likely leading to a reversal;

Components of MACD: Fast line DIF, Slow line DEA, Zero axis, MACD bars
Function One: Determine Trend
When both the DIF line and DEA line are above the zero axis, it indicates that the market is in a bullish trend;
If below the zero axis, it indicates a bearish trend.
Function Two: Determine Buy and Sell Timing
When the DIF line crosses above the DEA line to form a golden cross, it's a buy signal;
When the DIF line crosses below the DEA line to form a death cross, it's a sell signal.

Function Three: Identify Divergence
Bearish Divergence: The price is in an uptrend, but the MACD indicator is falling, indicating that the price may reverse downwards;
Bullish Divergence: The price is in a downtrend, but the MACD indicator is rising, indicating that the price is about to reverse upwards.