According to news on December 6, Glassnode Lianchuang @Negentropic_ posted on social media yesterday evening (21:31) that as Bitcoin exceeded $100,000, its fundamental index (BFI) began to weaken. This indicator often sends an early warning signal that, once confirmed, is difficult to ignore. Taking the example of every time Bitcoin reached local highs in the first quarter of this year, the BFI indicator marked the timing of exits before a major correction in BTC price. For now, Glassnode will continue to monitor this indicator, but the bull market remains.