BTC daily cycle long-term bullish with rising bottoms, medium-term relatively strong, but 4-hour short-term clearly weak: price broke below the short-term rising trend line and the middle Bollinger Band, MACD death cross turned green, KDJ declined from highs, short-term selling pressure concentrated, there will be a pullback, can take short positions on bounces; note that the daily middle band at 61800 is strong support, downside limited, only short on rebounds, don't chase shorts.