比特币以太坊反弹，ETF资金流入2.21亿美元
Bitcoin, Ether extend relief rallies as extreme fear meets renewed ETF buying
Bitcoin and Ether bounced off multi-year lows as dip buyers finally stepped in, and the spot BTC ETFs saw a $221 million inflow on July 2.
更进一步：量化金融体系
看懂新闻只是起点——沿量化金融路径，把它变成能交付的工程能力