Financial disclosures recently submitted by the 12 regional Federal Reserve banks showed that amid the pandemic in 2020, some senior Fed officials carried out multi-million-dollars trades in stock and other market transactions, raising questions as to whether they unfairly took advantage of a substantial relaxation of monetary policy. Fed Chairman Powell has since ordered a review of the central bank's ethical code. In this episode of BizBeat, CGTN's Zhuzhu explains.