In a downtrend, the most valuable entry opportunities often appear when the price rebounds to the previous support and resistance zones.

When the rebound encounters resistance, if a large bearish candle or a gravestone doji appears, it signifies that the bears have regained control, and the probability of success for entering short will significantly increase.

A more prudent approach is to wait for the confirmation of 'support turning into resistance': the price first breaks below the support, then rebounds to the same area but fails to break through, making the risk-reward ratio optimal for entry.

In other words, the entry logic in a downtrend is not about randomly finding a place to short, but rather combining the trend direction, key resistance levels, and reversal patterns.

Only when these three resonate does it have practical value, rather than merely analytical value.