ETH has completed the 4th test of the key price near 3545, forming a very effective support strength in the medium-term trend. If there is a 'second exploration' in the subsequent market, and a bottoming signal is observed based on this key price level, then the price is expected to rise, and the level of volatility will expand. If Ethereum can stabilize, altcoins may have a chance to bounce, so pay close attention to the strength and weakness reaction at this position.