Market warning: Bitcoin is about to usher in a massive sell-off wave, and the price may be cut in half to the $50,000 range, which will bring opportunities for short sellers. This fluctuation is related to the theft of 850,000 bitcoins from the Mentougou Exchange many years ago. It is reported that these stolen coins may be sold in batches in the next 5 to 10 years, which is estimated to put a heavy selling pressure of about $10 billion on the market. Whether the market can withstand this impact will soon be known. We need to pay close attention to market dynamics and respond cautiously.