Based on the market conditions from the morning of January 20th, Ethereum's 4-hour chart has already shown clear reversal signals. Multiple positive technical indicators are resonating, making this rebound quite promising.

First, let's look at the Bollinger Bands. The price quickly rebounded after touching the lower band, and the band’s shape shifted from an expanding to a converging pattern, which is a classic reversal precursor. What does this indicate? The bearish momentum is nearly exhausted, and the conditions for a rebound are gradually maturing.

The KDJ indicator also shows positive signals. The J line has turned upward in the oversold zone, indicating that after a short-term oversold condition, the rebound momentum is rapidly building. This further confirms that the bulls' counterattack is not just wishful thinking.

The most interesting development is the formation of a double support. The price precisely retested the previous upward trend line, with the Bollinger Band lower band acting as a second layer of support. The confluence of these supports, along with the oversold reversal of the KDJ and abnormal volume movements, creates a perfect resonance of multiple technical signals at this level. The certainty of a rebound becomes particularly strong.

In terms of trading strategy, you can gradually build long positions within the 3140-3280 range, targeting the zone of 3240-3280. The logic behind this move is clear: supported by multiple technical signals and resonating support levels, the rebound rally is already gathering momentum. The opportunity is right here—timing and rhythm are key.