Ahead of Powell's speech, the probability of a 25 basis point rate hike by the Fed in September is currently at 35.7%.

BlockBeats News, August 28th, according to CME's "FedWatch" data, the probability of the Fed holding interest rates steady in September is currently at 64.3%, while the probability of a 25 basis point rate hike is 35.7%.

Fed Chair Kevin Wash will deliver his first Jackson Hole speech tonight at 22:00 Beijing time, with the market watching closely for any signals on the policy direction for the September 15-16 meeting.