According to BlockBeats, on September 21, according to market data, the ETH/BTC exchange rate has rebounded above 0.04, and is now at 0.04055, with a 24-hour increase of 4.02%. This positive trend shows that the market's confidence in Ethereum has increased, which may be driven by recent on-chain data and crypto project analysis. Investors should pay close attention to subsequent market dynamics so as to adjust their investment strategies in a timely manner.