Recently, according to iChainfo monitoring, there are indications that a trader known as a 'giant whale' rapidly liquidated their holdings of 12,570 Ethereum (ETH) after Federal Reserve Chairman Powell gave a speech on August 23rd. This move happened three days prior, when the price of ETH increased by about 5% following Powell's remarks. An hour ago, the giant whale re-deposited all sold ETH into the Coinbase platform, which may indicate that they have completed the sell-off and thus made approximately $1.46 million in profit. This action has drawn market attention to the fluctuations in ETH value and investment strategies.