Many people only focus on the price of Bitcoin but ignore the underlying cost structure. The shutdown price of a mining machine represents the true cost a miner pays in the real world to mine one Bitcoin. When the price drops to this range, mining is no longer a business but a money-burning activity. Historically, every time the price approaches or falls below the shutdown price, market sentiment has been extremely pessimistic. Miners are forced to shut down, hash rates are cleared, and network difficulty adjusts. These invisible changes are often more honest than candlestick charts. The shutdown price is not a bottom-fishing signal, but it reminds us: when even miners are under immense pressure, the market may not be far from the “emotional bottom.” Understanding costs is the key to truly understanding Bitcoin.