特朗普政府退还千亿美元关税，面临法律挑战
Trump admin refunds $100 billion in 'liberation day' tariffs
The Trump administration has taken steps to effectively re-create the IEEPA tariff regime using other legal authorities. They already face court challenges.
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