My top 10 things to watch Wednesday, June 21 1. Classic: President Joe Biden calls Chinese President Xi Jinping a dictator. Could have said dictator-for-life and didn't. Still, angers Xi. A diversion for spies in Cuba? Biden remarks "extremely absurd and irresponsible," says Chinese Foreign Ministry spokesperson. Huawei and ZTE might be eavesdropping. 2. Fed Chairman Jerome Powell is set to testify Wednesday morning before the House Financial Services Committee. In prepared remarks, Powell sees more interest rate hikes and says inflation has a "long way to go." Powell on Thursday will deliver the second part of his semiannual economic…