Bitcoin rebounded slightly from the low of $76,100, tested $77,800 at midday before facing resistance, and remains in a range-bound tug-of-war; during the evening session, it repeatedly pierced near $77,000, closing with a lower shadow, indicating clear buying interest below, but trading volume continued to shrink during the rebound, suggesting market reluctance to chase higher, with gains mainly from short covering rather than active buying. The 4-hour Bollinger Bands are narrowing at the upper and lower bands, with the channel width compressed to recent extremes, indicating an imminent trend reversal; short-term moving averages (MA7/30) repeatedly entangle around $77,200-$77,500, with an unclear direction, MACD lines below zero, weak red and green histograms, RSI hovering around 45, indicating a temporary balance between bulls and bears. The key resistance zone above is focused on $77,500-$77,800; only a volume-supported breakout above this area can open space for testing $78,500. Support below is concentrated at $76,600-$77,000; if volume-supported breakdown occurs, bears will test the previous low of $76,100 again. Operationally, it is recommended to buy low and sell high within the $76,600-$77,500 range, with strict stop-loss, patiently waiting for a volume breakout before following the trend.