M Top and W Bottom are the most classic reversal patterns in practical trading, with clear usage and the following key points:

W Bottom (Double Bottom)
Appears at the end of a downtrend, where the price tests lows twice, forming a "W" shape, indicating support below and weakening selling pressure.
The key is the neckline—the high point connecting the two lows.
When the price breaks through the neckline with increased volume, confirming a reversal signal, the theoretical price increase is approximately equal to the vertical distance from the lowest point of the bottom to the neckline.
A stable buy point is after the price retests and confirms the breakout of the neckline, with stop-loss set below the second low, capturing the reversal trend in line with market momentum.

M Top (Double Top)
Appears at the end of an uptrend, where the price peaks twice, forming an "M" shape, indicating strong resistance above and weak buying pressure.
Again, the neckline is the key dividing line—the low point connecting the two highs.
When the price effectively breaks below the neckline, the decline is roughly equal to the distance from the top to the neckline.
The sell point can be at the breakdown of the neckline or when the price rebounds to test the neckline, with stop-loss set above the second high to avoid reversal risks.

Both patterns should be combined with volume analysis: volume should increase during breakouts or breakdowns for more reliable signals. Relying solely on the pattern can lead to false breakouts; proper position management and stop-loss are necessary to improve success rates.
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