《Three-Dimensional Trading System｜BTC Evening Market Analysis (1/3): Volume》 --- The Battle to Defend 80K: Bulls are holding on, but struggling. Current price around 80K. BTC fell from 81,700, briefly dipping below 80K to 79,810, before recovering. On the four-hour chart, bullish volume hasn't continued to expand. 81,500-81,750 is a clear resistance zone; any attempt to break through is met with resistance. Bearish volume isn't strong either, but there are sell orders waiting above 81K on every rebound. Neither bulls nor bears have an overwhelming advantage; volume is contracting, and the direction is unclear. Volume Assessment: Bulls are defending 80K, but lack the ability to mount an effective counterattack. 81,500-81,750 is the short-term ceiling; failure to break through will likely result in continued weak consolidation.