According to TechFlow, Matrixport released today's chart, saying that Bitcoin suddenly fell sharply this morning. Due to the lack of bullish momentum after Monday's trading, the longs who bought Bitcoin last week due to the Fed's dovish remarks may have been liquidated.
There was no obvious event triggering today's pullback, indicating that long liquidation may be the main reason in a low liquidity environment. If Bitcoin falls below the $59,000 mark, it may trigger more market concerns.