The brother waited for 10 days without any $ETH rally, and in the last hour and a half he decided to sell:
He sold 13,456.1 ETH that he bought at $3,420 on 12/20 for 4605 million USDT, with a loss of $1.02 million.
He spent 5031 million USDT on 12/20 decline to buy 14,369.9 ETH at an average price of $3,501, but unfortunately, the price of ETH did not rise quickly, and always remained below his cost line.
So, the brother decided an hour and a half ago to sell. So far, he has sold most of the ETH he bought on 12/20, and he still has 912 ETH ($3.11M)