[Golden Evening News | Overview of important developments on the evening of September 22] 12:00-21:00 Keywords: Musk, Federal Reserve, Cardano, Hong Kong 1. Bitcoin network transaction fees dropped to 2 Satoshi/byte; 2. Musk: An independent Grok APP will be launched soon; 3. EY: The Federal Reserve is cutting interest rates reactively, not proactively; 4. Several people were charged with aiding and abetting for using black and gray trading platforms to trade "U coins" to earn the difference; 5. Bitcoin miners have earned US$534.91 million so far in September, which may become the month with the lowest income in 2024; 6. Hong Kong Financial Secretary Paul Chan Mo-po: The Federal Reserve cut interest rates by 50 basis points, and the overall environment has gradually turned relatively favorable; 7. The founder of Cardano warned Trump that DeFi venture capital could politicize the cryptocurrency landscape.