The difficulty of today's homework is even greater, mainly because the trend today is too magical. There have been four roller coasters in the past 24 hours, with highs breaking through $107000 and lows almost falling below $102000. These four repetitions are indeed fatal, but judging from today's trend, both BTC and the US stock market have almost emerged from the panic after Moody's downgrade. At present, the Nasdaq and S&P have fallen by more than from the opening